Prof.
Sukit Limpijumnong
(Thai Physics Society), Prof.
Supot Hannongbua
(Faculty of Science, Chulalongkorn University)
20/05/2015, 09:00
Dr
Weerapong Paesuwan
(Ministry of Science and Technology)
20/05/2015, 09:10
Prof.
Pairash THAJCHAYAPONG
(National Science and Technology Development Agency, Thailand)
20/05/2015, 09:15
Plenary
Her Royal Highness Princess Maha Chakri Sirindhorn was born in Bangkok on the second of April, 1955 as a daughter of Their Majesties King Bhumibol Adulyadej and Queen Sirikit of Thailand. Apart from her excellent background education in history, language and education development, HRH has been interested in science and technology subjects, particularly for the well being and benefit of Thai...
Prof.
Eric BERGSHOEFF
(University of Groningen, The Netherlands)
20/05/2015, 10:30
Plenary
This talk first discusses the history surrounding the discovery of General Relativity by Einstein in 1915. It next discusses the present status of the theory and some of its shortcomings. Finally, a view on the future of General Relativity will be presented.
Prof.
Jan ZAANEN
(Instituut-Lorentz for Theoretical Physics, Leiden University, The Netherlands)
20/05/2015, 13:00
Plenary
A quake is rumbling through the core of physics: the empiricisms of condensed matter physics and the mathematics of string theory appear to have some deep relations. For the initiated this has an unusually strong allure, but since this cocktail involves some of the most impenetrable areas of physics it is not easy to communicate the excitement to the community at large. I will attempt to get...
Mr
Peerawat Laohana
(Department of Physics, Faculty of Science, Mahasarakham University, Mahasarakham 44150, Thailand)
20/05/2015, 14:00
A gridded planar probe has been developed to measure plasma parameters in a dc magnetron sputtering discharge. The gridded probe essentially consists of an outer grid in conjunction with the inner collector forming a stacked electrode configuration. The grid space needs to be less than the Debye length in order to assume the planar plasma-sheath structure. In addition, the grid-to-collector...
Mr
Singkarn Chanprateep
(Department of Physics, Faculty of Science, Prince of Songkla University, Songkhla, THAILAND 90110)
20/05/2015, 14:00
Environmental Physics, Atmospheric Physics, Geophysics and Renewable Energy
Poster presentation
The main objectives of this project were to design and construct the compact Savonius vertical axis wind turbine having cut-in speed of 3 m/s. This Savonius wind turbine was made of 4 S-shaped blades steel coating with Zinc with diameter of 1 m. Power of wind was transferred to generator by using O-ring at pulley ratio of 1:25 The results showed that at wind speed of 3.0 m/s the power...
Ms
Boonyaluk Namnuan
(Department of Physics, Faculty of Science, Chulalongkorn University, Bangkok, THAILAND 10330)
20/05/2015, 14:00
$\rm Cu(In,Ga)_3Se_5$ is known as a $\beta$-phase in the phase diagram of $\rm Cu_2$Se and $\rm (In,Ga)_2Se_3$. The existence of this phase on the surface of $\rm Cu(In,Ga)Se_2$ absorber plays an important role for enhancing the performance of $\rm Cu(In,Ga)Se_2$ solar cells. The energy dispersive x-ray spectroscopy (EDX) is used to investigate and confirm the composition of single $\rm...
Mr
Sarawut Choolok
(Department of Physics and General Science, Faculty of Science and Technology, Songkhla Rajabhat University, Songkhla 90000, Thailand)
20/05/2015, 14:00
V2790 Ori is a W Uma Eclipsing Binary with an orbital period of 0.28784200 day. From the previous investigation of its light curve, it was found that this binary system has a continuous orbital period change. In this research, new photometric B V and R light curves have been obtained to compute time of minimum light. Using the previously published time of minima and the value obtained in this...
Ms
Panomporn Poojon
(Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand)
20/05/2015, 14:00
This work aims to study evolution of galaxies, located in a dense environment of a compact group, called NGC 4095 group, that has recession velocities 6,000 $<$ $v$ (km s$^{-1}$) $<$ 8,000. Imaging observations for $BVR_{\rm c}$ broad-band, [$S\rm{II}$] and Red-continuum narrow-band were carried out on the 2.4 m Thai National Telescope (TNT) at Doi Inthanon, Chiang Mai, Thailand. Stellar age...
Ms
Sirirat Ouiganon
(Department of Physics, Faculty of Science, Prince of Songkla University, Hatyai 90112, Thailand)
20/05/2015, 14:00
This work focused on applying the optical coherence tomography (OCT) technique to measure concentrations of sucrose, one of the most widely used sugars in food industry, in solutions. Because the indices of refraction varied with the amount of sucrose dissolved in the solutions, OCT could be used to quantify the sucrose concentration by measuring the optical path length changes. In addition,...
Pinit Kidkhunthod
(Synchrotron Light Research Institute (Public Organization), 111 University Avenue, Muang District, Nakhon Ratchasima 30000, Thailand)
20/05/2015, 14:00
The investigation of the local geometric and electronic structure of probing element in bulk samples is the most extensive field of application in X-ray Absorption Spectroscopy (XAS). XAS consists of two main regions which are X-ray Absorption Near Edge Structure (XANES) and Extended X-ray Absorption Fine Structure (EXAFS). The former region is used to explain the local geometry and oxidation...
Kamolporn Haewsantati
(Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand)
20/05/2015, 14:00
The variations of stellar brightness in globular clusters are major evidence of their evolutions. In this study, optical images of two globular clusters were taken. First, images of NGC6121 (M4) were taken by Panchromatic Robotic Optical Monitoring and Polarimetry Telescopes 8 (PROMPT 8) at Cerro Tololo national observatory, Chile. Later, images of NGC7078 (M15), were taken by 2.4m Telescope...
Dr
Pitayuth Wongjun
(The Institute for Fundamental Study, Naresuan University, Phitsanulok 65000, Thailand)
20/05/2015, 14:00
Massive gravity is a modified gravity in which a mass is given to the spin-2 field. There are various kinds of massive gravity models. One of viable model which is received enormous attention to investigate in cosmology is “dRGT massive gravity”. Since it is a gravity theory, it must reduce to general relativity at Solar system scale. Black hole solution is one of well-known solutions in...
Siriwan Krainara
(Accelerator Technology Division, Synchrotron Light Research Institute (Public Organization), 111 University Avenue, Muang District, Nakhon Ratchasima 30000, Thailand)
20/05/2015, 14:00
Siam Photon Source (SPS) storage ring is an electron source with the electron beam energy of 1.2 GeV. In order to better understand behaviors of the electron beam, 50 beam loss monitors (BLMs) have been installed in the SPS storage ring to monitor the electron beam loss signals. BLMs consist of two pin-diodes which are sensitive to the minimum ionizing particles (MIPs) when the electron hits...
Jedsada Manyam
(NANOTEC, National Science and Technology Development Agency, Pathumthani, THAILAND 12120)
20/05/2015, 14:00
Point defects in ZnO play importance roles in chemical, optical and electrical properties of the material. Capability of manipulating the defects could lead to material engineering and benefit the field of ZnO based sensor, catalyst and optoelectronics. Here we examined redistribution of charge point defects in hydrothermally grown ZnO single crystal under the influence of external electric...
Ms
Panadda Waruriya
(Department of Physics and Materials Science, Faculty of Science, Chiang Mai University,Huay Kaew Road, Muang District, Chiang Mai, Thailand, 50200)
20/05/2015, 14:00
Reactive pulsed dc magnetron sputtering technique is highly effective in thin film deposition, particularly thin film of dielectric materials. In this work, we design and set up reactive pulsed dc magnetron sputtering system for deposition of Titanium Nitride (TiN) and Titanium Nitride-Hydroxyapatite (TiN-HA).
Suitable plasma conditions for deposition are analyzed using the...
Dr
Sarinrat Wonglee
(Thailand Institute of Nuclear Technology)
20/05/2015, 14:00
Neutron tomography is a method to investigate a sample via a three dimensional (3D) image produced by neutron absorption. It is widely applied in many fields such as, medical, industrial and archeological. By reconstructing 2D images taken from different angles, the 3D information can be created. In order to obtain a 2D image of which the quality is good enough for neutron tomography with a...
Ms
Kamonpan Pengpat
(Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai, 50200, Thailand.), Mr
Pichitchai Butnoi
(Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai, 50200, Thailand)
20/05/2015, 14:00
Lead zirconate titanate (PZT) films have been widely used for micro applications because of their excellent ferroelectric and piezoelectric properties. In this study, surface morphology and electrical properties of lead zirconate titanate films have been investigated. The PZT films have been prepared by a sol-gel method and deposited on silicon wafers by spin coating under different annealing...
Mr
Komsun Rapaway
(School of Physics, Institute of Science, Suranaree University of Technology, Nakorn Ratchasima, THAILAND 30000)
20/05/2015, 14:00
Material Physics, Nanoscale Physics and Nanotechnology
Oral presentation
ZnO nanowires have been widely studied due to their unique direct wide band gap of 3.37 eV making it attractive for electronics, optical detectors and light-emitting diodes application. In this work, we focus on ZnO nanowire-metal junction. N-type ZnO nanowires were growth vertically on a silver substrate (of ratio1:1of HTMA:Zinc nitrate) by hydrothermal process at the varied concentration....
Mr
Yuthana Thana
(Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand)
20/05/2015, 14:00
Cold atmospheric pressure plasma consisting of OH, O, O${}_3$, NO, and NO${}_2$ radicals is currently popular in biomedical applications. This is due to its ability on destroying microbes and stimulating on production of new cells. For such applications, development of techniques to measure density of any radical in the plasma is important. An optical emission spectroscopy (OES) technique,...
Mr
Shatchai Promsuy
(Department of Physics, Faculty of science, Khon Kaen University, 40002 Khon Kaen, Thailand)
20/05/2015, 14:00
$\rm La_{0.56}Sr_{0.4}Co_{0.2}Fe_{0.8}O_3$-$\delta$ (LSCF) thin films were fabricated on a yttrium stabilized zirconia (YSZ) pellet from either solutions containing LSCF suspension or LSCF sol gels. The suspensions and gel precursors were applied on the substrate via a conventional spraying and a dip coating, respectively. The LSCF films and the YSZ substrates were co-fired at 1100 $^o$C. From...
Anocha Sanorit
(Department of Industrial Physics and Medical Instrumentation, Faculty of Science, King Mongkut's University of Technology North Bangkok, Bangkok, THAILAND 10800)
20/05/2015, 14:00
The effects of wire sweep within the integrated circuit (IC) packaging process were studied in this research. Wire sweep is a major criteria that causes the shortage of wire between adjacent areas such as die and mold compound. It occur from the molding process after the wire bonding process in IC assembly. In experiment, the parameters of wire sweep were varied by wire size from 0.7 to 1.0...
Dr
Kotchaphan Kanjana
(Thailand Institute of Nuclear Technology, 16 Vibhavadi Rangsit Road, Chatuchak, Bangkok 10900, Thailand)
20/05/2015, 14:00
The decay of the monovalent transition metal ions (Ni+(aq) and Zn+(aq)) in pure water have been studied at temperatures up to 300oC using a pulse radiolysis technique with a transient UV-visible detection system. The results indicate that the reactions of the hexaaquo ions with radiolytic oxidizing species are responsible for this phenomenon. The disportionation nature of the ions has been...
Ms
Pattarawadee Maijan
(Department of Physics, Faculty of Science, Prince of Songkla University, Hatyai Campus, Songkhla 90110, Thailand)
20/05/2015, 14:00
About 100 years ago after the discovery that the Khoa Ron Na -Suangchan subdistrict area, Nakhon Si Thammarat enriched with tin mineral in that area. The adverse effect due to tin mining process was the waste Arsenopyrite (FeAsS) which were left over in the tin mine till now. During the rainy season the leachate water that contained with the arsenic compounds in the form of a Arsenopyrite was...
Ms
Thong-on Thanyarat
(Department of Physics, King Mongkut’s Institute of Technology Ladkrabang, Bangkok 10520, Thailand)
20/05/2015, 14:00
In this research, a technique of digital holography has been applied to investigation of latent fingerprints on a surface of clear transparent glass plate. In this technique, a CCD camera is put at the image plane instead of photographic film in typical holography. In our technique, a Michelson interferometer has been setup for splitting a laser beam from a semiconductor laser to an image...
Dr
Ekachai Hoonnivathana
(Department of Physics, Faculty of Science, Kasetsart University, Bangkok, Thailand)
20/05/2015, 14:00
In the present work, natural colourless topaz from Pakistan were irradiated gamma ray at different dose from 50-400 Gy. The samples were characterized by thermoluminescence (TL) and electron spin resonance (ESR) spectroscopy. The TL results showed that the luminescence center of topaz was appeared at 150 and 225 C. The intensity of TL was increased with increased radiation dose. The ESR...
Mr
Nuntawuth SUDLOY
(Department of Physics and Materials Science, Faculty of Science, Chiang Mai University 50200)
20/05/2015, 14:00
A dipole magnet is one of important components in particle accelerators. It can be used to bend the charged particle beam with desired deflection angle and direction. Moreover, it can be used as an energy spectrometer. This research focuses on development of a dipole electromagnet for measurements of energy and energy spread of electron beams that produced by the linear accelerator at the...
Mr
Chaiyon Chaiwai
(Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiangmai, 50200, Thailand), Dr
Udomrat Tippawan
(Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiangmai, 50200, Thailand), Dr
Yu Liangdeng
(Thailand Center of Excellence in Physics, Si Ayutthaya Road,Bangkok 10400,Thailand)
20/05/2015, 14:00
In development of MeV heavy-ion particle induced X-ray emission (PIXE) technology which has been demonstrated to be superior to conventional light proton PIXE owing to larger cross sections, MeV carbon-ion PIXE was tested and studied for availability and cross sections. The relatively low ion energy range around 1 MeV for C-ion PIXE had never been investigated before. In the work, C-ion PIXE...
Mr
Wasan Maiaugree
(Department of Physics, Faculty of science, Khon Kaen University, Khon Kaen, THAILAND)
20/05/2015, 14:00
NiS films were prepared by a hydrothermal technique on FTO glass substrates. The NiS films were used as a counter electrode electrodes of dye-sensitized solar cell. The dye-sensitized solar cell base on NiS exhibited performance with the energy conversion efficiency of 8.33%, open-circuit voltage of 0.74 V, short-circuit current of 16.23 mA.cm$^{−2}$, and fill factor of 0.69 under full...
Mr
Seksan Lowpa
(Department of Physics, Faculty of Science, Khon Kaen University, Khon Kaen 40002, Thailand.)
20/05/2015, 14:00
Dye-sensitized solar cells (DSSCs) is fabricated from a combination of relatively popular materials containing nanocrystalline TiO${}_2$, electrolyte solution containing I${}^−$/I${}^{3-}$ redox mediator, counter electrode, and natural dye. In this work, the natural dye extract from Artocarpus lacucha with methanol solvent as sensitizers. The photo to current conversion efficiency (η = 0.69%)...
Ms
Saowalak Saengplot
(Program of Materials Science and Nanotechnology, Faculty of Science, Khon Kaen University, Khon Kaen 40002, Thailand)
20/05/2015, 14:00
Magnetic nanocrytalline of La${}_{1-x-y}$Sr${}_x$Gd${}_y$MnO${}_3$ (LSGM) with $y$ = 0, 0.05, 0.10, 0.15 and 0.20 are synthesized by a thermal-hydro decomposition method at 800 ºC in air for 6 h. All samples are characterized by TG-DTA, XRD, SEM and VSM. The XRD result shows that all the prepared samples have perovskite structure with rhombohedral phase. The crystalline sizes are in the range...
Anan SUKANTHARAT
(Central Engineering Department, UTAC Thai Limited, Bangkok, THAILAND 10260)
20/05/2015, 14:00
This research studied an effect of ramp down temperature to integrated circuit (IC) packages after completed post mold curing in IC packaging process. Post mold cure process is so important to make a completed epoxy molding compound (EMC) due to cross linking to enhance microstructure of compound stiffness. Temperature is a factor effect to EMC base on the coefficient of thermal expansion. The...
Ms
Sirapat Seepromting
(Department of Physics, Faculty of Science, Kasetsart University, Bangkok, Thailand 10900)
20/05/2015, 14:00
Co-Cu film with thickness of 312 nm on different substrates (glass, A-PET, C-PET, W-PTFE and B-PTFE was deposited by RF-sputtering. XRD confirms that all deposited films show Co (HCP) phase in 220 plane, Cu (FCC) phase in 111 plane and Co-Cu (FCC) phase in 111 plane. Intensity of the peak is obviously dependent on substrate material. The highest and lowest peak intensities were observed on the...
Mr
Tanachai Ponken
(Departmet of Physics, Faculty of Science, Khon Kaen University, 40002, Thailand)
20/05/2015, 14:00
The electrical resistivity of thin films of Ga-P-Ti alloys, deposited on glass substrates by an asymmetric bipolar pulse-dc magnetron sputtering method under Ar atmosphere, has been investigated. The sputtering targets containing compacted GaP powder and metallic titanium sheet with the surface ratio GaP:Ti of 8:1, 5:1, 2:1 and 1:1 were employed. The electrical resistivity of the deposited...
Dr
Suriya Phankosol
(Department of Industrial and Technology Management, Faculty of Science and Technology, Bansomdejchaopraya Rajabhat University, Bangkok 10600, Thailand)
20/05/2015, 14:00
Environmental Physics, Atmospheric Physics, Geophysics and Renewable Energy
Poster presentation
Density and viscosity are an important physical property of biodiesel. In this work, proposed a single empirical equation can be estimated without the prior knowledge of the density and viscosity of an individual fatty acid ethyl ester, an empirical approach for estimation the density and viscosity of ethyl-biodiesel are correlated to saponification number (SN), iodine value (IV) and...
Mr
Sukittaya Jessadaluk
(Department of Physics, Faculty of Science and Technology, Thammasat University, Pathumthani, 12121, Thailand)
20/05/2015, 14:00
Surface-enhanced Raman scattering (SERS) substrates have been achieved via simultaneous assembled gold nanoparticles (AuNPs) onto the titanium dioxide nanotube (TNT) template. The highly ordered TNT template based on the sputtered Ti thin film was anodized at 60 V 25 oC in ethylene glycol mixed with 0.3 wt% of ammonium fluoride diluted by 2 vol% H2O. The effect of...
Dr
Rachsak Sakdanuphab
(College of Data Storage Innovation, King Mongkut’s Institute of Technology Ladkrabang, Bangkok, THAILAND 10520)
20/05/2015, 14:00
In this work, the formation of titanium oxynitride ($\rm TiO_xN_y$) thin films during a reactive dc magnetron sputtering process was investigated. $\rm TiO_xN_y$ thin films were deposited on glass substrates from Ti target at different sputtering power, using O$_2$ and N$_2$ as reactive gases. The structural, surface morphology, chemical-bonding and mechanical properties were analyzed by...
Mr
Kraipat Petrit
(Department of Physics, Faculty of Science, Prince of Songkla University, Songkhla, Thailand, 90112)
20/05/2015, 14:00
Environmental Physics, Atmospheric Physics, Geophysics and Renewable Energy
Poster presentation
Groundwater is important natural resources and vital for many people. In area of Patiw district, Chumphon province has a lot of palm forests. Local people use groundwater for grow their plant. The sedimentary rock in study area consists of mostly mud-gravel sediment rock, siltstone in the west and mostly hill is limestone. The aim of this project is to find and locate the location of...
Dr
Akkawat Ruammaitree
(Department of Physics, Faculty of Science and Technology, Thammasat University, Pathum Thani, THAILAND 12121)
20/05/2015, 14:00
Graphene on silicon carbide (SiC) has a potential for technological application devices. The electronic properties of graphene in nanometer scale are significantly influenced by morphology, edge structures and so on. In this report, we have studied the growth of the epitaxial graphene on silicon-terminated SiC (0001) by annealing the SiC substrates in ultra-high vacuum and various types of...
Dr
Pipat Ruankham
(Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai, THAILAND 50200)
20/05/2015, 14:00
Photovoltaic performance of hybrid ZnO nanorods (ZnO NRs)/ polymer solar cells is enhanced through the addition of ZnO nanoparticles (ZnO NPs) into poly(3-hexylthiophene) (P3HT) absorber layer. A mixture of ZnO NPs:P3HT, acting as photo-active layer, is coated onto ZnO NRs, serving as electron acceptor, by spin-coating technique. The ZnO NPs/P3HT blend is able to infiltrate into the interrod...
Ms
Kwanruthai Butsriruk
(Department of Physics, Faculty of Science, Chulalongkorn University, Bangkok, THAILAND 10330)
20/05/2015, 14:00
Cu-In-Ga (CIG) metallic precursor thin films were fabricated by sequential depositions of Cu-Ga and In on Mo-coated soda lime glass (SLG) substrates. Due to low melting point of In and adhesion issues of the CIG metallic precursor, the substrate temperature was optimized for the depositions of In and Cu-Ga layers. It was found that the sequence of the depositions of Cu-Ga and In affected the...
Ms
Sakuntala Seehaburan
(Department of Physics, Faculty of Science, Mahasarakham University, Mahasarakham 44150, Thailand)
20/05/2015, 14:00
In this research, the surface of sericin silk powder was treated using the atmospheric pressure plasma jet (APPJ). The plasma was generated with the argon and oxygen flow rate of 1.6 slm and 0.02 slm respectively. The stable discharge occurs with the RF frequency of 76.7 kHz, the plasma current of 140 mA and the RF power of 5.31 W. The silk powder before treated has the initial water contact...
Mr
Wuttiphong Thongpakdi
(Department of Physics and Materials Science, Facility of Science, Chiang Mai University 50200)
20/05/2015, 14:00
The electron source of the linear accelerator system at the Plasma and Beam Physics Research Facility, Chiang Mai University, is a thermionic cathode radio-frequency (RF) electron gun. The gun is a pi/2-mode standing wave structure composing of two S-band RF accelerating cells and a side-coupling cavity. The 2856 MHz RF wave is transmitted from the klystron to the RF-gun through a rectangular...
Ms
Busarin Noikaew
(Department of Physics, Faculty of Science, Chulalongkorn University, Bangkok, THAILAND 10330)
20/05/2015, 14:00
Typical $\rm CuIn_{1-x}Ga_xSe_2$ (CIGS) thin film solar cells on soda-lime glass (SLG) substrates consist of six different layers of thin film materials, i.e. SLG/Mo/CIGS/CdS/i-ZnO/ZnO(Al)/Al-grids. One of the commonly used deposition techniques for the CIGS thin films is the three-stage deposition process. However, the deposition of CIS/CGS bilayers and CGS/CIS/CGS trilayers were employed for...
Mr
Supathat Sukaiem
(Department of Physics, Faculty of Science, Chulalongkorn University, Bangkok, THAILAND 10330)
20/05/2015, 14:00
Quantum efficiency (QE) measurement is one of several methods used to investigate solar cell performance, especially the carrier collection. It indicates the amount of photogenerated current produced when a solar cell is illuminated by photons of a particular wavelength. In this study, a quantum efficiency measurement system was constructed and the $\rm CuIn_{1-x}Ga_xSe_2$ (CIGS) – based thin...
Dr
Sukanya Tachatraiphop
(School of Laser Technology and Photonics, Institute of Science, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand)
20/05/2015, 14:00
In Jewelry production, the laser welding has become an essential tools. It has been used for repair and upgrading the design. The control parameters which are laser parameters, welding method, inert gas, and operator skills were studies in various jewelry designs both silver and gold. Each jewelry design required different laser parameters and welding methods. Inert gas help improving the...
Ms
MURNEE DAOH
(Department of Physics, Faculty of Science, Songkhla Rajabhat University, 90000, Thailand)
20/05/2015, 14:00
Specific activity of natural radionuclides (${}^{40}$K, ${}^{226}$Ra and ${}^{232}$Th) in 50 beach sand samples collected from Soisawan beach of Thepha District in Songkhla Province, Thailand, have been measured and analyzed. Experimental results were obtained by using a high–purity germanium (HPGe) detector and gamma spectrometry analysis system at Nuclear and Material Physics laboratory in...
Mr
Auttachai Thawonsuwan
(Faculty of General Education, Rajamangala University of Technology Srivijaya, A. Muang, Songkhla, 90000, Thailand)
20/05/2015, 14:00
This research aims to study the specific activity of natural (${}^{40}$K, ${}^{226}$Ra and ${}^{232}$Th) and anthropogenic (${}^{137}$Cs) radionuclides in bottled drinking water from different manufacturers in local stores located in Phuket province, Thailand. Totally 30 samples of bottled drinking water (5 liters) were randomly collected and prepared. All of water samples were boiled at 100...
Mr
Jatechan Channuie
(Thailand Institute of Nuclear Technology)
20/05/2015, 14:00
For the radiation safety purpose, a mixed concrete wall setup is being designed and tested at Thai Research Reactor. In this work, using barite as the main aggregate, the concrete samples, which were meant primarily to be used as gamma shielding materials, were evaluated for their neutron radiation attenuation properties. A 50-Ci Am-Be was used as the neutron source and a BF3 was used to...
Dr
Surawut Wicharn
(Department of Physics, Faculty of Science, Srinakarinwirot University, Bangkok, THAILAND 10110)
20/05/2015, 14:00
In this study, a transmission property of one-dimensional photonic band-gap (1D-PBG) structure consisting of two periodically alternated dielectric layers, which the first layer is ordinary dielectric material and the second layer is dielectric material containing graphene multilayer system inside the layer, have been numerically investigated by using transfer matrix method. The numerical...
Ms
Knittha Sidakum
(Department of Physics, King Mongkut’s Institute of Technology Ladkrabang, Bangkok 10520, Thailand)
20/05/2015, 14:00
In this thesis, optical phase conjugate beam with the using of different resonator configurations
has been investigate. Two types of SPPC resonators were selected to use, the first one is linear
resonators formed by crystal surface and the other one is linear resonators formed by single mirror and a photorefractive crystal. In our experiment, cerium doped barium titanate...
Ms
Lukkana Srisoy
(Department of Physics, Faculty of Science, Mahasarakham University, Mahasarakham, THAILAND)
20/05/2015, 14:00
In this research, the ceramic target with a mixture of ZnO (99.9% purity) and titanium (99.99% purity) was sintered at 1,000 ${}^{\circ}$C for 4 hour. The content of Ti added to the ZnO target 10 wt.%. The diameter of the target was 51 mm and the thickness was 5 mm. The titanium-doped ZnO (TZO) films were deposited on glass substrates using the DC magnetron sputtering at room temperature. The...
Ms
Chantira Boonsri
(Department of Physics, King Mongkut’s Institute of Technology Ladkrabang, Bangkok 10520, Thailand)
20/05/2015, 14:00
The aim of this research is to develop a quantitative phase imaging system based on digital holography for distinguishing cancer cells and ordinary cells. For improving the efficiency of the imaging system, a computer program, which has been used for digital hologram reconstruction, is modified by integrating with an algorithm based on compressive sensing theorem. The feature of compressive...
20/05/2015, 14:00
Oral presentation
Ms
Soraya RUANGDIT
(Department of Physics, Faculty of Science, Prince of Songkla University, Songkhla, THAILAND 90110)
20/05/2015, 14:00
Since Chitosan is the substance that can be extracted from shrimp shell, easy to find, and cheap in the Southern region of Thailand. In addition, it can prolong the life of fruit after harvest with the qualification of high cation that can binding to gram-negative bacteria. It can cause bacteria to lose balance in chemistry and eventually die. Moreover, it can also eliminate many types of...
Ms
Jiraporn PROMPING
(Thailand Institute of Nuclear Technology, Bangkok, Thailand, 10900)
20/05/2015, 14:00
In this study, a prediction of the ratio of thermal power output to fusion power input (Q value) of the DEMO reactor under various scenarios using integrated predictive modeling code is studied. DEMO is the first fusion reactor designed to generate electric power, using the knowledge gained from the International Thermonuclear Experimental Reactor (ITER). DEMO has been proposed to be built in...
Prapaiwan Sunwong
(Accelerator Technology Division, Synchrotron Light Research Institute (Public Organization) 111 University Avenue, Muang District, Nakhon Ratchasima, 30000 Thailand)
20/05/2015, 14:00
Ultra-high vacuum is a key requirement that determines electron beam quality and lifetime for an electron accelerator complex. In operation of the Siam Photon Source (SPS), pressure distribution of storage ring has been monitored using a series of Cold Cathode Gauges (CCGs) installed in proximity to the vacuum pumps around the ring. Pressure between the CCGs was calculated based on the...
Pichai Sirisangsawang
(Scientific Equipment Center, Faculty of Science, Kasetsart University, Bangkok, THAILAND 10900)
20/05/2015, 14:00
Aluminum-doped ZnO (ZnO:Al) film was prepared by RF-sputtering on glass, A-PET, C-PET substrates. XRD confirms that sputtered ZnO:Al films shows a polycrystalline wurtzite structure with c-axis perpendicular to the substrate in (002) direction. The highest and lowest peak intensities were observed on the films deposited on glass and C-PET substrates, respectively. SEM result shows the...
Jompoj Wongphecauxson
(Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand)
20/05/2015, 14:00
Autonomous technology in space navigation is a key to explore the solar system and beyond. Current space navigation technology requires constant communication between spacecraft and ground-based stations with typical error about 4 kilometres per astronomical unit. Pulsars are fast rotating neutron stars. Having high precision (in order of microsecond) in their spin period (approximately second...
Dr
Phrudth Jaroenjittichai
(National Astronomical Research Institute of Thailand,Chiang Mai 50200, Thailand)
20/05/2015, 14:00
Pulsar search has always been one of the most active fields. It lets astronomers to discover new phenomena, which either challenge or confirm our current knowledge. The most-successful Parkes Multibeam Pulsar Survey (PMPS) has us to discover over a third of currently known pulsars. The long-term monitoring programme for PMPS pulsars has been initiated, which now contains over 35,000...
Dr
Prasong Kessaratikoon
(Nuclear and Material Physics Research Unit (NuMPRU), Department of Physics, Faculty of Science, Thaksin University, Muang, Songkhla, THAILAND 90000)
20/05/2015, 14:00
The specific activities of natural ($^{40}$K, $^{226}$Ra and $^{232}$Th) and anthropogenic ($^{137}$Cs) radionuclides in 135 surface soil samples collected from 7 districts in Satun province in the southern region of Thailand were measured and determined. Experimental results were obtained by using a high-purity germanium (HPGe) detector and gamma spectrometry analysis system. The KCL,...
Dr
Suwan Plaipichit
(Department of Applied Physics, King Mongkut’s Institute of Technology Ladkrabang, Bangkok 10520, Thailand)
20/05/2015, 14:00
The technique for recording digital hologram, using single beam based on Total Internal Reflection (TIR), has been proposed. The laser diode with wavelength of 635 nm has been used as the light source. First, a positive resolution test target with a line width of 200 um has been used as the object to compare two configurations (transmission and reflection)of digital in-line holography (DIH)....
Kritsada Kittimanapun
(Synchrotron Light Research Institute (SLRI), 111 University Avenue, Muang District, Nakhon Ratchasima, 30000, Thailand)
20/05/2015, 14:00
The SLRI Beam Test Facility (SLRI BTF), currently in a design phase, is a part of the future upgrades of the SLRI accelerator complex. Upon completion, SLRI BTF will be able to produce electron test beams with the number of electrons ranging from a few tens to several thousands of electrons per bunch. A simple setup in the initial stage will be implemented without any modifications to the...
Mr
Niwat Hemha
(School of Physics, Institute of Science, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand)
20/05/2015, 14:00
The common-envelope process is known as one of the complicated phases in binary evolution. A lot of efforts have been dedicated to study this common-envelope stage, but the many questions related to this process are yet to be answered. If one binary survives the common-envelope, the binary will emerge as a white dwarf accompanied by low-mass main sequence star in close orbit, or often referred...
Mr
Pajongjit Naboonmee
(Department of Physics and Materials Science, Faculty of Science, Chiang Mai University 50200)
20/05/2015, 14:00
Beam diagnostic systems and measuring devices, which are used to verify the beam properties, are essential issues of any particle beam accelerator. In this research, we focus on study and development of a current transformer for measuring a pulse current of electron beams produced from the radio-frequency (RF) electron gun and from the linear accelerator at the Plasma and Beam Physics Research...
Singharach JANYOD
(Department of Industrial Physics and Medical Instrumentation, Faculty of Science, King Mongkut's University of Technology North Bangkok, THAILAND 10800)
20/05/2015, 14:00
This research interested in studying about property of expired epoxy for extending life time of the epoxy in die attach process. Die attach process is one that is very important in the integrated circuit (IC) packaging manufacturing. A normal material used for attaching between die and substrate of a package which is an epoxy. From normal manufacturing process, an epoxy is stored in the frozen...
Mr
Pattadon Udomsanti
(Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, 50200)
20/05/2015, 14:00
A non-dispersive bending system is a magnetic system, which charged particles of different energies bend and move out from the system at the same point. Theoretical conditions for being a non-dispersive system are the dispersion function and its derivative vanish at the system exit. In this research, we study the non-dispersive bending system consisting of three sector dipole magnets for a...
Ms
Khemsinun Gunsriwiwat
(Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand)
20/05/2015, 14:00
We present the results of photometric study of pulsations in VV UMa Algol-type system as a part of the THASOS (Thai Southern Sky Survey for OEA Stars) survey ongoing at NARIT. The THASOS survey is focused on discoveries of a new oEA stars and detailed study their pulsation spectra and binary light curves. The hot (Te=9540K) primary component of the VV UMa, the0.687355-day Algol type system was...
Mr
Natthawut CHAISUEB
(Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai, THAILAND 50200)
20/05/2015, 14:00
Linac based terahertz (THz) source at the Plasma and Beam Physics (PBP) Research Facility, Chiang Mai University, consists of a thermionic RF electron gun, an alpha magnet for magnetic bunch compressor, a travelling wave s-band accelerating structure for post acceleration, and various beam diagnostic instruments. The PBP-CMU linac can produce relativistic femtosecond electron bunches, which...
Mr
Pichet Wongsanarathib
(College of Nanotechnology, King Mongkut’s Institute of Technology Ladkrabang, Bangkok, Thailand 10520)
20/05/2015, 14:00
In this research, the superhydrophobic texture based on PTFE coated AAO template surface modification. The AAO template was successfully achieved from high purity aluminium sheet by two-step anodization process in 0.3 M of oxalic acid at 40V 0 degree Celsius. The AAO template was then future widened in 5% phosphoric acid at variable period during 0 to 80 min. the effect of widening period on...
Ms
Maytipa Phalakarn
(Prience Of Songkla University)
20/05/2015, 14:00
This project studied on the asymmetric polysulfone (PSF) membranes surfaces were modified by DC plasma at low pressure using argon as working gas in this project. The main objective of this project is to increase the hydrophilic property of the polysulfone (PSF) membrane surface. Samples of asymmetric PSF membrane were modified by DC plasma at low pressure using argon (Ar) as working gas....
64.
Synthesis and characterization from Zn1-xCoxFe2O4 nanostructures prepared by hydrothermal method
Mr
narinthorn Wiriya
(Department of Material Science and Nanotechnology, Faculty of Science, Khon Kaen University, Khon Kaen 40002, Thailand)
20/05/2015, 14:00
In this work, we report the synthesis of Zn${}_x$Co${}_{1-x}$Fe${}_2$O${}_4$ nanoparticles ($x$ = 0.0, 0.2, 0.4, 0.6, 0.8, and 1.0) prepared by hydrothermal method. The results of XRD, SEM and TEM showed that were cubic spinel structure with the particle size in the range of 7-17 nm. The IR spectra of Zn${}_{1-x}$Co${}_x$Fe${}_2$O${}_4$ nanoparticles exposed the intrinsic stretching...
Ms
Watcharaporn Intatue
(Department of Physics and Materials Science, Faculty of Science, Chiang Mai University 239 Huaykaew Road, Tumbol Suthep Amphur Muang, Chiang Mai 50200 THAILAND)
20/05/2015, 14:00
Plasma enhanced chemical vapor deposition (PECVD) is one of the method of coating thin film for improve surface material properties which can be apply to electronic, medicine and bio molecular. This research focuses on coating amorphous carbon thin film by PECVD technique for cell culture applications. PECVD is the process operated at low temperature, able to control compound and properties of...
Mr
Nopadhol Kamma
(Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand)
20/05/2015, 14:00
General relativity theory is a gravitational theory describing relation between spacetime geometry and mass/energy. General relativity provides mysterious prediction of spacetime geometry such as black holes and wormholes. Black hole is a spacetime geometry surrounding a massive object in which there exists a characteristic radius that even light cannot be escaped from the object. Wormhole is...
Kittikun Surawuttinack
(Department of Physics, Faculty of Science, King Mongkut's University of Technology Thonburi, Bangkok, Thailand 10140)
20/05/2015, 14:00
An alternative class of the Lagrangian called the multiplicative form is successfully derived. This new Lagrangian can be considered as a one parameter, namely the speed of light, extended class from the standard additive form of the Lagrangian since both yield the same Newtonian equation.
Prof.
Eric Mazur
(Harvard University)
20/05/2015, 14:00
Why is it that stellar students sometimes fail in the workplace while dropouts succeed? One reason is that most, if not all, of our current assessment practices are inauthentic. Just as the lecture focuses on the delivery of information to students, so does assessment often focus on having students regurgitate that same information back to the instructor. Consequently, assessment fails to...
Mrs
Jintana Laopaiboon
(Department of Physics, Faculty of Science, Ubon Ratchatani University, Ubon Ratchatani, THAILAND 34190), Mr
Raewat Laopaiboon
(Department of Physics, Faculty of Science, Ubon Ratchatani University, Ubon Ratchatani, THAILAND 34190)
20/05/2015, 14:00
In study of emergency dosimeters to be used in case of accidental radiation exposure of the population, retrospective dosimetry is one of the most important for dose measurement in contaminated areas. In this paper discusses the thermoluminescence (TL) properties of alumina porcelain substrates of thin film chip resistors removed from computer circuit boards. X-ray photon energy 160 keV was...
Mr
Nikorn Shinsuphan
(Materials Science and Nanotechnology program, Faculty of Science, Khon Kaen university, Khon Kaen 40002, Thailand)
20/05/2015, 14:00
First-principles calculations have been investigated on the geometrical and electronic properties of the three lower diamondoid structures including adamantane (C${}_{10}$H${}_{16}$), diamantane (C${}_{14}$H${}_{20}$) and triamantane (C${}_{18}$H${}_{24}$) molecules. The energy gap obtained from the difference between the highest occupied (HOMO) and lowest occupied (LUMO) molecular orbital for...
Ms
Grittiya Pongsupa
(Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand)
20/05/2015, 14:00
Motivated by the upcoming photometric surveys that will cover a broad range of wavelengths and regularly monitor a fair fraction of the sky with good photometric accuracy (e.g. the Large Synoptic Survey Telescope, LSST), we aim to provide proof-of-concept that photometric reverberation mapping of the Broad Line Region (BLR) in quasars is feasible at high-z and fainter magnitudes than that...
Ms
Suratsa Meebua
(Department of Physics, Faculty of Science, Prince of Songkla University, Songkhla, THAILAND 90110)
20/05/2015, 14:00
This project aims to study about structure and function of Duoplasmatron ion source in Tandem accelerator. We used program SIMION to simulate ion beam from Duoplasmatron ion source. If we use SIMION, we can get appropriate parameters that show the best ion beam. The best ion beam is the beam that has little spread and looks parallel. After simulation the ion beam with SIMION, result show that...
Mr
Ekkaphop KETSOMBUN
(Department of Physics, Faculty of Science, King Mongkut’s University of Technology Thonburi, Bangkok, Thailand, 10140)
20/05/2015, 14:00
Zn(O,S) thin films were deposited on glass substrates using pulse DC magnetron sputtering for 60 minutes. The sputtering power was varied from 70 to 100 W with oxygen reactive gas from 0 to 5 sccm at a constant pulse frequency of 200 kHz at room temperature. The optical properties of Zn (O,S) thin films was characterized by using UV-Visible spectroscopy, the thickness and composition of films...
Ms
Piramon Hampitak
(Department of Physics, Faculty of Science, Khon Kaen University, Khon Kaen, THAILAND 40002)
20/05/2015, 14:15
Material Physics, Nanoscale Physics and Nanotechnology
Oral presentation
Manganese dioxide (MnO${}_2$) is one of the most studied electrode materials for use in supercapacitors due to its distinguished properties such as high specific capacitance, environmental compatibility, and low cost. In this study, local and electronic structures of Mn in MnO${}_2$ electrode have been investigated by in situ X-ray absorption spectroscopy technique. *In situ* Mn *K*-edge XANES...
20/05/2015, 14:15
Oral presentation
Mr
Takol Tangphati
(Department of Physics, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand)
20/05/2015, 14:15
Kinetic Monte Carlo (KMC) is an algorithm which finds transitions between states during an evolution of a system out of equilibrium according to the prescribed transition rate probabilities. One Major caveat with the original KMC is no attention that is given to how the system interacts with the environment. In particular, it is not known how the transition rate probability matrix plays a role...
Mr
Komsilp Kotmool
(Department of Physics, Mahidol Wittayanusorn School, Nakhon Pathom, Thailand 73170; Department of Physics, Faculty of Science, Chulalongkorn University, Bangkok, Thailand 10330)
20/05/2015, 14:15
First principles–based electronic structure calculations of superhard iron tetraboride (FeB$_4$) under high pressure have been undertaken in this study. Starting with a “conventional” superconducting phase of this material under high pressure leads to an unexpected phase transition toward a semiconducting one. This transition occurred at 53.7 GPa, and this pressure acts as a demarcation...
Mr
Chirayu Sainamthip
(Mahidol Wittayanusorn School, Nakhon Pathom 73170, Thailand)
20/05/2015, 14:30
Lanthanide-monophosphate materials have been used in many applications, such as scintillators for detecting radiation and inorganic fluorescent labels. In this work, high-pressure phase transitions of XP (X = La, Ce, Pr, and Nd) have been undertaken. Based on density functional theory (DFT), the energetic stability of XP materials were investigated to verify the most stable structures at...
Dr
Sirapat Pratontep
(College of Nanotechnology, King Mongut’s Institute of Technology Ladkrabang, Chalongkrung Rd., Ladkrabang, 10520, Thailand)
20/05/2015, 14:30
A high failure rate is becoming a common occurrence in university physics courses for the first year students. Will there ever be a way out? Here we report a case study of a first-year physics course (with a class size of fifty) at College of Nanotechnology, KMITL. The course has been designed to bridge the gap between basic physics at high schools to advanced physics concepts in materials...
Mr
Nithi Thananukool
(Department of Chemical Engineering, Chulalongkorn University, Phayathai Road, Wangmai, Patumwan, Bangkok 10330, Thailand)
20/05/2015, 14:30
Biological Physics and Biomedical Engineering
Oral presentation
Determination of pesticide residues in food, water, and the environment is crucial for the well-being of human and animals. This is because organophosphates and carbamates, two groups of widely applied pesticides in the agriculture, could inhibit cholinesterase enzyme which then may cause pyrolysis and finally death (Perry et al., 1998) to the livings. The main aim of this work is, therefore,...
Irada Theppabut
(Department of Physics, Faculty of Science, King Mongkut's University of Technology Thonburi, Bangkok, THAILAND 10140)
20/05/2015, 14:30
Material Physics, Nanoscale Physics and Nanotechnology
Oral presentation
The objective of the research was to study how the size of the spherical particles and the wavelength of the incident electromagnetic waves affect the intensity of the scattered electromagnetic waves. We began the calculation by solving the Helmholtz equation to obtain the scalar wave equation which led to the scattered wave by the spheres. In the limit of far-field region, the radial...
Dr
Tasanee PRIRUENROM
(Pressure Laboratory, Mechanical Department, National Institute of Metrology (Thailand), Pathumthani, THAILAND 12120)
20/05/2015, 14:30
This work presents the method used to determine the vertical gravity gradients at National Institute of Metrology (Thailand), NIMT, using the relative gravimeter Scintrex Autograv CG-5. This value will be used to transfer the absolute gravity from the reference height of an instrument to a new specific position because the reference height of each absolute gravimeter is different depending on...
Mr
Supanat Sasipongpana
(College of Nanotechnology, King Mongkut’s Institute of Technology Ladkrabang, 1 Chalongkrung Rd., Ladkrabang, Bangkok 10520, Thailand)
20/05/2015, 14:45
Biological Physics and Biomedical Engineering
Oral presentation
A sensor for detecting pesticide by the inhibition of acetylcholine esterase (AChE) enzyme have been fabricated by direct immobilization in an agarose matrix on the surface of ion-sensitive field-effect transistors (ISFET). The enzyme entrapment was achieved by mixing AChE (0.01U) in an agarose gel buffer solution, and droping the mixture onto the surface of ISFET. This AChE-ISFET sensor was...
Dr
Chatchaval KURUPAKORN
(Electrical Metrology Department, National Institute of Metrology (Thailand), Pathumthani, THAILAND 12120)
20/05/2015, 14:45
This paper describes how to develop, test and evaluation of an AC High Voltage Measurement System 70 kV with digital technique at NIMT. The purpose of the development is to make national standard more reliable for quality assurance. The AC HV Measurement System consists of a Capacitive-High Voltage divider, Measuring cable and high precision Digital Multi-Meter. Its nominal scale factor is...
Mr
Jakkree Boonlakhorn
(Materials Science and Nanotechnology Program, Faculty of Science, Khon Kaen University, Khon Kaen, THAILAND 40002)
20/05/2015, 14:45
Material Physics, Nanoscale Physics and Nanotechnology
Oral presentation
In this research work, the giant dielectric response in Ca${}_{1-3x/2}$Yb${}_x$Cu${}_3$Ti${}_4$O${}_{12}$ ($x$ = 0, 0.05, 0.15) ceramics prepared by a modified sol-gel method and sintered at 1100 ${}^{\circ}$C for 6 and 12 h were investigated as functions of temperature and frequency. A single phase of CaCu${}_3$Ti${}_4$O${}_{12}$ was obtained in all ceramic samples. Grain growth of...
42.
Hydrogen adsorption of Ti decorations in Mg-Metal Organic Framework-74: A First-Principles Study
Ms
Pitphichaya SUKSAENGRAT
(Department of Physics, Faculty of science, Khon Kaen University, Khon Kaen, THAILAND 40002)
20/05/2015, 14:45
Metal-Organic Frameworks show to be one of the most promising materials for hydrogen storage materials owing to containing lots of hydrogen trapping sites, tunable pore size and cheap to produce. However, the hydrogen adsorption energy of these materials is very low. In the present work, we functionalized Ti on the surface of Mg-Metal Organic Framework-74 (Mg-MOF-74) in order to enhance the...
Kwan Arayathanitkul
(Department of Physics, Faculty of Science, Mahidol University, Bangkok, THAILAND 10400),
Narumon Emarat
(Department of Physics, Faculty of Science, Mahidol University, Bangkok, THAILAND 10400)
20/05/2015, 14:45
Team teaching is a strategy that has been used in first-year physics classes at Mahidol University for ten years. This specific method consists of two teachers working together in the same classroom. The courses were Introductory Physics I and II for first-year science students (ranging from 250 to 300 students) and the lectures were conducted in a large sloping theatre. Worksheets have been...
Ms
Kamonrat Kasornmala
(Materials Science and Nanotechnology Program, Faculty of science, Khon Kaen University, 40002 Khon Kaen, Thailand)
20/05/2015, 15:00
This project deals with the calculation of adsorption energies of carbon dioxide adsorbed on single-walled carbon nanotube with three different radii, namely 1.35, 2.71 and 4.07 Å by using the Density Functional Theory. Our results revealed that carbon dioxide molecule prefers to bind on single-walled carbon nanotubes with the molecular axis parallel to carbon nanotubes surface....
Ms
Piyawan Leepheng
(College of Nanotechnology, King Mongkut's Institute of Technology Ladkrabang, 1 Chalongkrung Rd., Ladkrabang, Bangkok 10520, Thailand), Ms
Sirikan Thongboon
(College of Nanotechnology, King Mongkut's Institute of Technology Ladkrabang, 1 Chalongkrung Rd., Ladkrabang, Bangkok 10520, Thailand)
20/05/2015, 15:00
Atomic Physics, Quantum Physics, Molecular and Chemical Physics
Oral presentation
An extended gate field-effect transistor (EGFET) is a device that can be applied to chemical sensing with the benefit of low cost electrodes. A poly(methylmethacrylate) (PMMA)-imprinted film has been applied to fabricate on indium tin oxide glass as a gate electrode for an EGFET sensor for a specific detection of carbaryl sample. The imprinted film was obtained by mixing PMMA and carbaryl in...
Dr
Ratchanok Somphonsane
(King Mongkut' s Institute of technology Ladkrabang)
20/05/2015, 15:00
Material Physics, Nanoscale Physics and Nanotechnology
Oral presentation
The issue of contact resistance between graphene and metal contacts is crucial in the development of high-speed graphene devices. However, fabrication-related contamination severely affects the contact resistance in graphene and hence an effective post-fabrication method is needed to resolve this problem. Current-induced cleaning has previously been used successfully to clean the surface of...
Dr
Chompoonoot HIRUNYAPRUK
(Mechanical Metrology Department, National Institute of Metrology (Thailand), Pathumthani, THAILAND 12120)
20/05/2015, 15:00
Density meters have been employed to measure the density of liquids and used in many areas such as chemical, petroleum, pharmaceutical and beverage applications. The advantages of density meters over other density measurement devices are their fast measurement, high accuracy and little sample needed. Although high accuracy is one of their major features, the density meters need regular...
Mr
Ariyaphol Jiwalak
(Department of Physics, Faculty of Science, Mahidol University, Bangkok, THAILAND 10400)
20/05/2015, 15:00
This study investigates students’ skill in physics laboratory; in particular, measurement and uncertainty. Data were obtained from undergraduate physics students from various universities in Thailand, including the second-year physics students at Mahidol University. It was found from pre-test that most students, who have already passed the introductory physics laboratory class, still lack of...
Mr
Wirun Laopornpichayanuwat
(Mechanical Metrology Department, National Institute of Metrology (Thailand), Pathumthani, THAILAND 12120)
20/05/2015, 15:15
Density of standard weights is one of many parameters that have the influences on the mass determination of the weights. As it is used to calculate the air buoyancy correction, which is an important factor to precisely determine the mass of the weights. According to the International Organization of Legal Metrology (OIML) recommendation R 111-1, 2004(E), there are six accepted methods for the...
Ms
Chitchanok Lesak
(Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai, 50200, Thailand; Physics Education Research Laboratory, Faculty of Science, Chiang Mai University, Chiang Mai, 50200, Thailand)
20/05/2015, 15:15
When two objects made from different materials are rubbed and immediately separated, negative charges or electrons are then transferred from a surface of one object to another one, depending on material of each object. The charge transfer process due to rubbing is called “triboelectrification.” This study aimed to measure transferred triboelectric charges by using two methods. The first method...
Mr
Chavalit Suksri
(Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai, THAILAND 50200)
20/05/2015, 15:15
Material Physics, Nanoscale Physics and Nanotechnology
Oral presentation
Sodium niobate (NaNbO${}_3$;NN) system is a series of alkaline niobate-based ceramics, which is lead-free antiferroelectric material over a wide temperature range of -100 to +360$^{\circ}$C that shows many phase transitions [1]. However, the pure crystallized NaNbO$_3$ ceramic was obtained at high calcination temperatures and showed poor homogeneity with large particle size[2]. In this work,...
Mr
Titipong Phoopathong
(Theoretical Condensed Matter Physics Research Unit, Department of Physics, Faculty of Science, Mahasarakham University, THAILAND 44150)
20/05/2015, 15:15
Stability diagrams are a powerful tool for both analysis and design of single electron devices. These diagrams generally show stable regions and also state-transition lines. This tool has become useful for the investigation on the tunneling process within the devices. In this work, the procedure to build a stability diagram of the single electron transistor has therefore presented. The...
Mr
Kroekchai Inpor
(National Metal and Materials Technology Center (MTEC), Thailand Science Park, Pathumthani, THAILAND 12120)
20/05/2015, 15:15
Material Physics, Nanoscale Physics and Nanotechnology
Oral presentation
Organic field effect transistors (OFETs) are widely utilized in alternative disposable electronic devices. These devices provide fabrication simplicity, low-cost, fast, and adequate sensitivity. A water-gated OFETs have been reported to operate under low-voltage with low-energy consumption and applied to DNA sensor. In this study, Bottom-contact top-gate water-gated OFETs were fabricated....
Bimba Andrew
(Faculty of Computer Science and Information Technology, University of Malaya, 50603 Kuala Lumpur)
20/05/2015, 15:30
Over the past two decades, research has shown that students who experience academic difficulties and actively seek help achieve academic success. This finding has resulted in the development of various adaptive help seeking components for adaptive learning environments. However, the existing question-answering systems are designed based on specific templates. Thus, it is not robust enough to...
Dr
Sawasdee YORDKAYHUN
(Department of Physics, Faculty of Science, Prince of Songkla University, Hatyai, THAILAND 90112)
20/05/2015, 15:30
Shear wave velocity is a fundamental parameter in determining geological structures and soil characteristics for geotechnical and earthquake engineering studies. Shear wave velocity can be obtained from the conventional surface seismic method such that the shear wave is generated by the seismic source and the refracted and reflected energies are recorded by the array of geophones. We report...
Akira Kobayashi
(MJIIT, University of Technology Malaysia KL, Jalan Semarak 54100, Malaysia; Graduate School of Engineering, Osaka University, Osaka 565 0871, JAPAN)
20/05/2015, 15:30
Biological Physics and Biomedical Engineering
Invited talk
Hydroxyapatite (HA) coated implants have promising bioactive properties and biocompatibility of HA with bone in orthopedic and dental surgery. The advantages of HA coating on implants is those, such as a more rapid and stable fixation of the implant to the bone, stronger bonding between the bone and the implant, increased uniform bone in growth at the bone implant interface and decreased...
Dr
Parinya Karndumri
(Department of Physics, Faculty of Science, Chulalongkorn University)
20/05/2015, 15:30
A consistent reduction ansatz of eleven-dimensional supergravity to $N=2$ $SO(4)$ seven-dimensional gauged supergravity is constructed. The resulting seven-dimensional theory admits a topological mass term for the three-form field and a maximally supersymmetric $AdS_7$ critical point. This is in contrast to the gauged supergravity without topological mass admitting a half-supersymmetric domain...
Jariya Buajarern
(National Institute of Metrology (Thailand), Pathumthani, THAILAND 12120),
Narin Chanthawong
(National Institute of Metrology (Thailand), Pathumthani, THAILAND 12120)
20/05/2015, 15:45
Cylindrical masters such as plug gauges and ring gauges are commonly used in manufacturing process as the physical diameter standard. Diameter of the cylinder is defined in the JIS B 7420 by means of distance between two opposite edges measured by the length measuring instrument. The standard method descried that length shall be measured two directions perpendicular each other in the cross...
Mr
Panat Nanthanasit
(Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai, 50200, Thailand)
20/05/2015, 15:45
Gauss’s law is important in understanding electrostatic; however, it is one of topics that students have difficulties in understanding and solving problems. This study aimed to analyze students’ understanding of electrostatics while solving Gauss’s law problems. In surveying student understanding of Gauss’s law, a conceptual survey on symmetry and Gauss’s law developed by Singh (2000) were...
Kitti Boonperm
(Materials Science and Engineering Program, Faculty of Science, Mahidol University, Bangkok, 10400, Thailand)
20/05/2015, 16:00
Biological Physics and Biomedical Engineering
Oral presentation
Unconjugated estriol (uE3) is one of the estrogen hormone produced in significant amount during the pregnancy. It can be measured in maternal blood and its level can be used as a marker for screening the down syndrome. An abnormally low level of uE3 indicates a chance of baby suffering from a down syndrome, lower than 0.68 ng/mL in the second trimester. The main objective of this work is to...
Dr
Mudtorlep Nisoa
(Division of Physics, School of Science, Walailak University, Nakhon Si Thammarat, THAILAND 80161)
20/05/2015, 16:00
Rubber block STR20 is a natural rubber product which has highest market need for both locally and internationally. STR20 is used as raw materials for various industries, such as tire, conveyor, elastomeric bearing pad and shockproof rubber case. Drying process is the most important in the rubber block production, which also consume the most of energy use. Typically, the dryers use hot air,...
Mr
Nuttawoot Sricharoenchai
(Department of Physics, Faculty of Science, Mahidol University, Bangkok, THAILAND 10400)
20/05/2015, 16:00
We have adopted the Interactive Lecture Demonstration (ILD) which is one of the active learning strategies to teach high-school students in the topic of magnetic force on a moving charged particle in order to enhance student conceptual understanding. Three sample groups of grade 12 students were studied; G1 and G2 were taught by ILD but students in G1 had a better background of physics...
Patipan Uttayarat
(Department of Physics, Faculty of Science, Srinakharinwirot University, Bangkok 10110, Thailand)
20/05/2015, 16:00
We present a sum rule for Higgs fields in general representations under $SU(2)_L \times U(1)_Y$ that follows from the connection between the Higgs couplings and the mechanism that gives the electroweak bosons their masses, and at the same time restricts these couplings.
Sum rules that follow from perturbative unitarity will require us to include singly and doubly charged Higgses in our...
Alex Wong
(Bruker Singapore Pte. Ltd., 11 Biopolis Way, #10-10, Singapore 138667)
20/05/2015, 16:15
In this presentation, the latest 5-on-1 system for SEM will be introduced. The presentation will focus on the four channel SDD FlatQUAD EDS, XTrace micro-XRF and micro-CT systems, and briefly discuss on the new developments on EBSD and WDS.
Quantax FlatQUAD is the EDS microanalysis system based on the revolutionary XFlash® FlatQUAD. This special annular four-channel silicon drift detector...
Phatra Khomkrachang
(Materials Science and Engineering Program, Faculty of Science, Mahidol University, Bangkok, THAILAND, 10400)
20/05/2015, 16:15
Biological Physics and Biomedical Engineering
Oral presentation
It is well-known that the principle of surface plasmon resonance (SPR) based sensing is based on the detection of a small refractive index change on a thin metal film caused by complex formation between biomolecules such as antigen–antibody complexes. Therefore, the SPR-based immunoassay has often been employed to extend its application to the clinical diagnosis for the detection of biomarkers...
Gurpreet Singh
(Department of Physics, Faculty of Science, Chulalongkorn University, Bangkok 10330 , Thailand)
20/05/2015, 16:15
A search for the standard model Higgs boson in the vector boson fusion production channel with decay to bottom quarks is reported. A data sample comprising 19.8 fb$^{-1}$ of proton-proton collisions at $\sqrt{s}$ = 8 TeV collected during the 2012 running period has been analysed and 95$\%$ confidence level upper limits on the cross section are derived in the mass range from 115 to 135 GeV....
Mr
Trai Unyapoti
(Department of Physics, Faculty of Science, Mahidol University, Bangkok, THAILAND 10400)
20/05/2015, 16:15
The objective of this study was to improve student’s understanding and problem solving skill for high-school students in the topic of conservation of momentum in the collision. The topic covered concepts of momentum and impulse, type of collision, law of conservation of momentum and collision in one and two dimensions.
We used the learning modules that were composed of the guided...
Mr
Klitsadee Yubonmhat
(Department of Physics, Faculty of Science, Khon Kaen University, 40002, Thailand)
20/05/2015, 16:30
NMR frequency generator was built using digital frequency generator (PTS310) and AVR microcontroller. The microcontroller was programmed to receive a frequency value from computer. After processing, the microcontroller sent 24 parallel data bits to control the digital frequency generator (PTS310). The frequency value is restricted between 0-16 MHz. It was found that the output frequency can be...
Kittikul Kovitanggoon
(Department of Physics, Faculty of Science, Chulalongkorn University, Bangkok 10330 , Thailand)
20/05/2015, 16:30
Various final state channels at, the Compact Muon Solenoid (CMS), contain charm quark jets. Charm quarks can be hadronized to D mesons which could travel some distance in the tracker before decaying, providing the displaced tracks and vertices. The CMS silicon tracker allows the precise reconstruction of such vertices and tracks that are displaced with respect to the primary interaction point....
Ms
Arunee Eambaipreuk
(Department of Physics, Faculty of Science, Mahidol University, Bangkok, THAILAND 10400)
20/05/2015, 16:30
Many students have difficulties when they solve problems in circular
motion. This motivated us to create a problem-solving strategy for such particular topic. The strategy was incorporated in the large-class instruction by
including it in a class-worksheet. We expected that the strategy could help
students work their way through solving circular motion problems. The sample was composed of...
Mr
Chawit Chaijirawiwat
(Department of Physics, Mahidol Wittayanusorn School, Thailand), Mr
Metha Trikasemmart
(Department of Physics, Mahidol Wittayanusorn School, Thailand), Mr
Tanasate Naphathrathorn
(Department of Physics, Mahidol Wittayanusorn School, Thailand)
20/05/2015, 16:30
Biological Physics and Biomedical Engineering
Oral presentation
Loss and damage of bone tissue is the one of the most troubling problems that jeopardize human health. Therefore, over the past decade, synthesization biocomposite materials for bone tissue engineering is becoming increasingly interested. In this study, Bio-composite material composed of hydroxyapatite/beta-tricalcium phosphate (BCP) (inorganic) and chitosan/alginate (ChiAlg) (organic)...
Ms
Jiraporn Boonpo
(Department of Education in Science and Technology, Faculty of Education, Khon Kaen University, Thailand, 40002)
20/05/2015, 16:45
Simple harmonic motion is physics’ topic that the student still has misconception and difficulty. Predict-observe-explain approach is based on constructivism. It is designed for engaging the student to the learning situation while the video analysis technique supports students to link a real world and theoretical analysis. Therefore, this study aimed to enhance students’ understanding of...
Apichayaporn Ratkata
(Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand)
20/05/2015, 16:45
The projections of limits for dark matter searches studying from the final states containing a monojet and missing transverse energy at the upgraded LHC are discussed. DM-sample events are generated using MadGraph. In addition, DELPHES simulations at 14 TeV are used to estimate signal and backgrounds to set the limits on DM nucleon cross sections. Additional simple projections using generator...
Dr
Ekapong Hirunsirisawat
(Office of Engineering Science Classroom, Learning Institute, King Mongkut's University of Technology Thonburi, Bangkok 10140, Thailand)
20/05/2015, 17:00
It has been found that the external magnetic field can induce particle creations from vacuum fluctuations of quantum electromagnetic field. This indicates that the quantum fluctuations associated with one loop corrections can be amplified by an intense magnetic field. It is interesting to consider the particle creation process in the dynamical Casimir effect on a magnetized background. In...
Dr
Watcharawuth Krittinatham
(1Division of Physics, School of Science, University of Phayao, Phayao, THAILAND 56000)
20/05/2015, 17:00
This research aims to survey the ideas of 120 high-school students, in Phayao province, about Kepler’s laws of motion and classical mechanics. Both topics, all students already studied in Astronomy and Physics classes. Their ideas are investigated by the open-ended questions which allow them to answer and give their reasons to support. Students’ responses are categorized by determining how...
Mr
Chatchai Hussadorn
(Department of Physics, Faculty of science, King Mongkut’s University of technology Thonburi, 126 Prachautid road, Bangmod, Bangkok 10140 Thailand)
20/05/2015, 17:15
The understanding students’ conceptual background after the traditional teaching for studying static fluid is one of the most essential keys to design effective teaching activities. The conceptual understanding of 245 high school students in the topic of buoyant force act on the object in liquid was investigated by using 10 questions conceptual understanding test. The questions were divided...
Kittipong Aimsamer
(Department of Physics, Faculty of Science, King Mongkut's University of Technology Thonburi, Bangkok, Thailand 10140)
20/05/2015, 17:15
The vacuum of quantum electromagnetic field can be excited in the form of photon creation via the interaction with moving boundaries. This is so-called the dynamical Casimir effect. It is well known that the external magnetic field can result in the amplification of the quantum fluctuations of electromagnetic field. In the present work, we therefore consider photon creations from the...
Mr
Phusit Nualpijit
(Department of Physics, Faculty of Science, Kasetsart University, Bangkok, THAILAND 10900)
21/05/2015, 08:00
We investigate coherent single photon traveling in the positive $z$ direction passes through a graphene film subjected to a transverse magnetic field $B$. Analytical expressions are obtained for the transmission and reflection coefficients by full second-quantized form. Giant Faraday rotations in the infrared regime are generated and measurable Faraday rotation angles in the visible range...
Mr
Korkuson Masean
(Department of Physics and Materials Science, Faculty of science,Chiang Mai University, Chiang Mai, 50200, Thailand)
21/05/2015, 08:00
Capacitively Coupled Contactless Conductivity Detection (C$^4$D) technique has been widely used in detecting particles of interest in microfluidics applications. In this technique, change of solution conductivity is detected when particles in solution flow pass electrodes. Detection sensitivity depends on electrodes and microfluidic channel configuration. Influenced electrode geometries...
Waranont Anukool
(Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand)
21/05/2015, 08:00
Atomic Physics, Quantum Physics, Molecular and Chemical Physics
Oral presentation
The adiabatic interaction between Rydberg atom and ground-state atom of Rb2 was numerically investigated. The semi-molecular potentials were calculated by matching the wave function of Rydberg electron using Kirchhoff integral with Coulomb Green’s function that corporates the quantum defect correction. The interaction potential was employed to pinpoint the principle quantum number of...
Ms
Sujitra Khuntee
(krujeabza@hotmail.com)
21/05/2015, 08:00
This research aimed to develop and implement a set of hands-on experiment in light and optics. The subjects were 38 tenth grade students in an extended high school of Supanburi province on academic year 2014. The instruments used were a set of hands-on experiment in light and optics, the Light and Optics Conceptual Evaluation (LOCE) test, and student experiment’s report. The data were analyzed...
Mr
Apichart Siriwitpreecha
(Department of Industrial Physics and Medical Instrumentation, Faculty of Applied Science, King Mongkut’s University of Technology North Bangkok, Bangkok 10800, Thailand)
21/05/2015, 08:00
In Thailand, the extra high voltage 500 kV and 50 Hz overhead transmission lines have been installed by Electricity Generating Authority of Thailand (EGAT) both of single-circuit and double-circuit due to the rapid increasing of electrical power demands. The electromagnetic field will be generated and propagated to the environment in the area around overhead transmission lines. The intensity...
163.
Analysis of Students’ Task Relating to Boyle's law, Charles’s law and Kinetic Energy for Gases.
Mr
Pattarawut Chaweewong
(Department of physics, Faculty of Science, Ubon Ratchathani University, Thailand, 34190)
21/05/2015, 08:00
The purpose of this study was to examine student responses to a task relating to Boyle's law, Charles’s law and kinetic energy for gases, which did not demand the use of a mathematical equation for its solution. The target group was 33 students in grade 11 from Ummaoprachasan School, Amphur Thatphanom, Nakhonphanom province. All students studied in the second semester of academic year 2014....
Mr
ratapon kamkaen
(Department of physics, Faculty of Science, Ubon Ratchathani University, Thailand, 34190)
21/05/2015, 08:00
The National Statistical Office reported that persons between 15 and 24 years used the internet more than other groups, with 65.4% of their time being spent playing online games, especially role-playing games (RPG). Examples of RPG are Ragnarok and Dungeons and Dragons. A RPG is a game in which each participant assumes the role of a character generally in a fantasy or science fiction setting...
Mr
Pornchai Kopatta
(Department of Physics , Mahidol Wittayanusorn School , Thailand)
21/05/2015, 08:00
In this work, a Michelson Interferometer was applied for the measurement of coherence length of He-Ne laser (632.8 nm), blue diode laser (404.5 nm), green diode laser (532.5 nm) and red diode laser (656.5 nm). The principle of coherence length measurement is based on the formation of interference fringes obtained from Michelson interferometer. The laser beam is expanded by a beam expander and...
Mr
Suriya Chalermchat
(Department of physics, Faculty of Science, Ubon Ratchathani University, Thailand, 34190)
21/05/2015, 08:00
In the last three decades, much work has been done regarding the identification of students’ misconceptions in fundamental physics, especially related to the topic of force and motion. Many of these misconceptions are widely shared and re-appear in different groups of students. For example, many students believe that the net force on an object is proportional to its velocity rather than its...
Dr
Noparit Jinuntuya
(Department of Physics, Faculty of Science, Kasetsart University, Jatujak, Bangkok 10900, Thailand)
21/05/2015, 08:00
We have developed a system that can automatically give a score to a student laboratory report. Even the system can be used in general, we aim our work mainly to the basic physics laboratory. We take the advantage of the existing Google doc by designing a cloud document for the students to submit their reports. This can be very convenient since the students can submit their works via any...
Mr
Tawan Thongsuk
(Theoretical Condensed Matter Physics Research Unit, Department of Physics, Faculty of Science, Mahasarakham University, Maha Sarakham, THAILAND 44150)
21/05/2015, 08:00
The average charge number on the metallic single electron transistor due to the effect of Coulomb Blockade and Electron Tunneling at any temperature is calculated by using path integral Monte Carlo (PIMC) approaches. The results show that those effects are the most prominent at low temperatures, i.e. $\beta {E_C} > 1$. Additionally, the efficiencies of the Single Site Update Algorithm (SSU)...
Mr
Seng Khun Beang
(Department of Physics, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla, THAILAND 90110)
21/05/2015, 08:00
This research aims to explore Cambodian students’ understanding of forces and motions using the force and motion conceptual evaluation (FMCE) test. The 43 items of FMCE, excluding an energy concept, were translated into Cambodian language, validated by experts, and modified to reach a statistically acceptable version. After that, the assessment instrument was applied to 73 tenth graders of a...
Mr
Zunpitch Kwanyuen
(Department of Biomedical Engineering, Chulalongkorn University)
21/05/2015, 08:00
Fast, reliable, inexpensive, and efficient pathogen detection for diagnostic purposes has always been a high priority in healthcare industry, leading to research for alternative diagnostic methods. An approach that is prominent and has all said characteristics is electrochemical-based immunosensors.
Recently, Graphene has gained a lot of interest in electricity-related fields due to its...
Mr
Aant Phatthara-aneksin
(College of Nanotechnology, King Mongkut’s Institute of Technology Ladkrabang, Bangkok 10520, Thailand)
21/05/2015, 08:00
An electronic tongue (e-tongue) represents a class of machines that are able to classify liquid samples, e.g. food and beverages, usually from various electrochemical methodology in combination with pattern classification and recognition analyses. This research aims to classify Arabica coffee by using an in-house electrochemical based on cyclic voltammetry and principal component analysis...
Dr
Piyabut Burikham
(Department of Physics, Faculty of Science, Chulalongkorn University, Bangkok 10330 , Thailand)
21/05/2015, 08:00
We study static AdS star in generic dimension. The dependence of the mass limit to the bulk fermion mass is explored. In the bulk conformal limit, the mass limit saturates at a value identical to the mass limit of a radiation star or the AdS space filling with pure radiation. The temperature and entropy of the degenerate AdS star in the bulk conformal limit is zero in contrast to the...
Mr
Pawaret Intana
(Department of physics, Faculty of Science, UbonRatchathani University, Thailand, 34190)
21/05/2015, 08:00
There is wide agreement among physics education researchers that practical work is of goal importance for teaching and learning and allows for the promotion of several education goals. However in Thailand, teaching and learning approach was focusing on lecturing rather than laboratory. The research aim to compare the gain of learning achieved using two different instructional approaches under...
Apiram TEERANAVAGUM
(Department of Physics, Faculty of Science, Mahidol University, Bangkok, THAILAND 10400)
21/05/2015, 08:00
The objective of this study is to use the internal and external parameters of calibrated camera to correctly reconstruct 3D information from 2D images. Calibration of camera is necessary for applications that involve quantitative measurements such as dimensional measurements, depth from stereoscopy, or motion from images. The depth of a point can extract from 2D images by the method of...
Mr
Klichchupong Dabsamut
(Department of physics, Kasetsart University, Bangkok 10900, Thailand)
21/05/2015, 08:00
The valuable non-renewable resources such as petroleum and natural gas will gradually peter out in near future, therefore alternative sources of energy are becoming of increasing interest. Moreover, in order to store energy, rechargeable lithium batteries are of particular interest since they have a possibility for portability and together with a high conversion efficiency. Hexa-titanium...
Somporn Buaprathoom
(Mahidol Wittayanusorn School, 364 Moo 5 Salaya, Phutthamonthon, Nakorn Pathom, Thailand 73170)
21/05/2015, 08:00
Optics, Non-linear optics, Laser Physics, Ultrafast Phenomena
Oral presentation
Light scattering is a non-invasive technique to characterize small particles, such as microorganism and powder etc. Therefore, it is wildly used in many fields, for instance, pharmaceutical technology and microorganism detection. There are many authors theoretically calculate the scattered light from a particle for fitting to the experimental measurement to determine the particle...
Ms
Pannaporn Duangkam
(Department of physics, Faculty of Science, Ubon Ratchathani University, Thailand 34190)
21/05/2015, 08:00
The purposes of this one group pre-/post-test research were to design an inquiry-based learning approach about force and pressure based on the 80/80 efficiency criterion, and to enhance students’ critical thinking skills. The participants were 25 purposively selected grade five students from Ponduan School, Wang-Hin, Srisaket in the first semester of the 2014 academic year. The results...
Mr
Panya Wichanphet
(Department of physics, Faculty of Science, UbonRatchathani University, Thailand, 34190)
21/05/2015, 08:00
This study aimed to developing analysis Skills and solving a problem about electrical circuit. In the time, Learning of students to attend on examination of University. Teaching in mostly schools emphasized theory but knowledge in physics must study from learning by doing for foundation in future. In this research, the participants were attending students level as grade 12. There were 35...
Mr
Anek Hongthong
(Department of physics, Faculty of Science, UbonRatchathani University, Thailand, 34190)
21/05/2015, 08:00
We have learned from our experience of teaching physics that students misunderstand about the concept of a frictional force. The objective of this work is to enhance the students’ understanding on the concept of a frictional force for grade 10 students of Chaiyaphumbhakdeechumphon school, Chaiyaphum province. The research tools consist of the teaching plan with predict-observe-explain (POE)...
Mr
Kreangkrai Tanawesh
(Department of physics, Faculty of Science, UbonRatchathani University, Thailand, 34190)
21/05/2015, 08:00
Science experiment plays an important role in developing scientific knowledge for learners in science. Effective teaching methods must emphasize learning by experimenting where students see real phenomena. Through low-cost simple experiments designed for hands-on activity in conjunction with the reinforcement of graphical multimedia, the students have enhanced the matching...
Mrs
Prapatsorn Seattha
(Department of Education in Science and Technology, Faculty of Education, Khon Kaen University, Thailand, 40002)
21/05/2015, 08:00
STEM education suggested that students should be enhanced to learn science with integration between Science, Technology, Engineering and Mathematics. To help Thai students make sense of relationship between Science, Technology, Engineering and Mathematics, this paper presents learning activities of STS Projectile Motion Unit. The developing of STS Projectile Motion Unit is a part of research...
Ms
Piriya Kaeopookum
(Research and Development Division, Thailand Institute of Nuclear Technology (Public Organization), Nakhonnayok, THAILAND 26120)
21/05/2015, 08:00
Bombesin peptide is crucial for the development of positron emission tomography (PET) tracer for human prostate cancer. The aim of this work is to optimize the labeling condition of Ga-68 with DOTA-[Pro$^1$,Tyr$^4$]-bombesin, an analog of bombesin peptide, through $\textit{in vitro}$ and $\textit{in vivo}$ studies. It was found that the radiolabeled product...
Ms
Chanoknan Banglieng
(Division of Physics, Faculty of Science and Technology, Rajamangala University of Technology Thanyaburi, Pathum Thani 12110)
21/05/2015, 08:00
We developed a supplement instrument for Michelson Interferometer experiment instrument. In this experiment, we have to count numbers of fringes to determine wavelength of He-Ne laser. Without this extra instrument, the counting is hard and easy to make error because the fringes are very small. This instrument serves as light counting device. It composes of light sensor, comparable circuit,...
Wachira Seesad
(Department of Physics, Faculty of Science, Ubon Ratchathani University, Ubon Ratchathani, THAILAND)
21/05/2015, 08:00
The senior project aimed to develop a series of experimental apparatus for use in teaching and learning physics in high school and university courses. Each apparatus is miniaturized to about a fifth of conventional one, built on a small steel plate of B5 size. Therefore, it is portable and can be placed on a classroom desk. Each set is constructed by a number of parts divided according to...
Mr
Warut Singseeta
(Department of Physics, Faculty of Science, Ubon Ratchatani University, Warinchamrab, Ubon Ratchatani, 34190, Thailand)
21/05/2015, 08:00
This work was aimed to study program for control an anemometer, wind vane, and thermometer sensor with dsPIC33 microcontroller. This prototype was developed for basic measuring, storing and monitoring weather data by personal computer. There are 3 parts of measurements. The first, wind direction was measured by wind vane. The structure of the sensor is a variable resistor. Voltage divider...
Mr
Kritpong Kulthamrongsri
(Department of Physics, Mahidol Wittayanusorn School, Nakhon Pathom, 73170, Thailand), Mr
Supawit Kittipadakul
(Department of Physics, Mahidol Wittayanusorn School, Nakhon Pathom, 73170, Thailand), Mr
Wattanapol Sangpho
(Department of Physics, Mahidol Wittayanusorn School, Nakhon Pathom, 73170, Thailand)
21/05/2015, 08:00
Cosmic rays play an important role in our daily lives and can be used in various fields of educational research, especially in physics and astrophysics. However, the detection of cosmic rays is affected by many factors, and atmospheric water vapour pressure was recently suspected to be an important factor. Princess Sirindhorn Neutron Monitor (PSNM) is a cosmic ray detector in Chiangmai, and...
Sakshin Bunthawin
(Biotechnology of Electromechanics Research Unit, Science of Physics, Faculty of Technology and Environment, Prince of Songkla University, Kathu, Phuket 83120, Thailand)
21/05/2015, 08:00
The present project has been extended from our previous lab-scale work of sex reversal for monosex-male Nile tilapia by using a transient pulse-electric field induction toward commercial products. All male sex reversal rate from 89.25% to 92.5% is achieved. Our newly equipment (to be patented) of electrical sex reversal was developed for large-scale of more than 10,000 eggs for each induction....
Mr
Anuphong Thongted
(Department of Physics, Faculty of Science, Chulalongkorn University, THAILAND 10330)
21/05/2015, 08:00
According to thin film experiments, the electronic property of yttrium-hydride (YHx) system changes as a function of hydrogen concentration. The transformation of yttrium dihydride (YH${}_2$) into yttrium trihydride (YH${}_3$) structure by hydrogenation causes its resistivity to increase rapidly, and is constant after the YH${}_{2.85}$ is formed. We used *ab-initio* calculations to study the...
Wutthisak Prachamon
(School of Physics, Institute of Science, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand)
21/05/2015, 08:00
We have studied the electronic band structure of single-walled carbon nanotubes (SWCNTs), (8,0) 3 primitive cells 96 carbon (C) atoms doped with hydrazine (N${}_2$H${}_4$) and water (H${}_2$O). Van der Waals corrected density functional theory calculations using plane wave approach with periodic boundary conditions were carried out for the adsorption of the intermolecular interaction. The...
Mr
Vittachai YUWAPHAN
(College of Nanotechnology, King Mongkut’s Institute of Technology Ladkrabang, 10520, Thailand)
21/05/2015, 08:00
Current electronic noses have limitations in olfaction of oil-based compounds, owing to their low responses for metal oxide gas sensors. This research is aimed to develop an alternative method to classify oil-based products, including fragrance, by using derivatizing agent to derivatize oil-based compounds followed by measurements with an in-house electrochemical electronic tongue (e-tongue)....
Sasitorn Uaysin
(Faculty of Science and Industrial Technology, Prince of Songkla University, Surat thani Campus, Surat thanni, 84100, Thailand)
21/05/2015, 08:00
Oil palm planting has become a very important agriculture especially in Southern Thailand. Because its oil production has been used as human consumption and is now developed as bio-energy used for some vehicles therefore oil palm has become a very important economical plant which has been promoted to crop widely. However, since a nursing time of young oil palm trees needs more than 2 years,...
Ms
Manlika Kamnoy
(Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai, THAILAND 50200)
21/05/2015, 08:00
Material Physics, Nanoscale Physics and Nanotechnology
Oral presentation
In this work, barium titanate; BaTiO${}_3$ (BT) powder was successfully synthesized by the molten-salt method. The molten-salt method is a simple technique for preparation of fine powder also can control the shapes and sizes in the order of nanometers. The metal oxides of BaCO${}_3$ and TiO${}_2$ were mixed and ball-milled. After that, BT powder were mixed with KCl : NaCl salt and then washed...
Dr
Atchara Punya
(Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, THAILAND 50200)
21/05/2015, 08:00
The Zn(Ge,Sn)N$_2$ semiconductors are closely related to the (Al,Ga,In)N. Both families have band gaps that span the ultraviolet through the visible range. Attention in the II-IV-N$_2$ has grown recently, with success in synthesizing ZnSnN$_2$ reported in 2012 [1] and the recognition of some of their unique optoelectronic properties and the potential that provide for designing novel and...
Mr
Nirawith Palakawong
(School of Physics and NANOTEC-SUT Center of Excellence on Advanced Functional Nanomaterials, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand; Thailand Center of Excellence in Physics, Commission on Higher Education, Bangkok 10400, Thailand)
21/05/2015, 08:00
SnO$_2$ is an oxide semiconductor with wide band gap, good transparency, and high thermal and chemical resistances. As-grown SnO$_2$ usually exhibits $\textit{n}$-type conductivity with high carrier concentrations, which is an obstacle to make it $\textit{p}$-type. Consequently, applications of SnO$_2$ for optoelectronics are limited. Group-III elements, such as Al, Ga, and In, are...
Sakshin Bunthawin
(Biotechnology of Electromechanics Research Unit, Science of Physics, Faculty of Technology and Environment, Prince of Songkla University, Kathu, Phuket 83120, Thailand)
21/05/2015, 08:00
Living yeast cells in the brewery industry are active cells. They have different
responses to AC electric field if they possess different dielectric properties. Electrical parameters which are used to determine health of yeast cells are the conductivities of the cytoplasm ($\sigma_c$), the cell membrane ($\sigma_m$), dielectric constant of the membrane ($\varepsilon_m$) and the cytoplasm...
Dr
Prayoonsak Pluengphon
(Division of Physical Science, Faculty of Science and Technology, Huachiew Chalermprakiet University, Samutprakarn 10540, Thailand)
21/05/2015, 08:00
We performed ab initio calculation based on density functional theory for studying high-pressure properties of doped ZnO. At the beginning, the impurities of Al and Ga atoms into ZnO were investigated up to 10 GPa. The tendency of enthalpy formation under pressure was studied. The high-pressure properties such as lattice parameter, electron density and elastic constant were investigated. It...
Mrs
Sukanya Petchsirivej
(Division of Physical Science, Faculty of Science and Technology, Huachiew Chalermprakiet University, Samutprakarn 10540, Thailand)
21/05/2015, 08:00
Ab initio calculation based on density functional theory were performed for studying high-pressure phases and electronic properties of I-III-VI$_2$ compounds. Thermodynamic properties of a solid system were calculated by using LDA and PBE functionals. Stability of high pressure structures of I-III-VI$_2$ compounds were determined by comparing the lowest enthalpies. The high-pressure properties...
Pornrat Wattanakasiwich
(Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai, 50200, Thailand; Physics Education Research Laboratory, Faculty of Science, Chiang Mai University, Chiang Mai, 50200, Thailand)
21/05/2015, 08:00
This study aimed to investigate moral reasoning of the first year students in physics laboratory. An instrument used in this study was 10 open-end questions. Each question corresponded to different aspects of moral reasoning such as integrity, diligence, discipline etc. The questions were given to 10 experience physics teachers and 100 first-year engineering students taking physics laboratory....
Ms
Pimpika Pimsorn
(School of Physics and NANOTEC-SUT Center of Excellence on Advanced Functional Nanomaterials, Suranaree University of Technology, 111 University Avenue, Muang District, Nakhon Ratchasima, 30000 Thailand; Synchrotron Light Research Institute, 111 University Avenue, Muang District, Nakhon Ratchasima, 30000 Thailand; Thailand Center of Excellence in Physics (ThEP Center), Commission on Higher Education, Bangkok 10400, Thailand)
21/05/2015, 08:00
Detailed infrared (IR) absorption spectroscopy of O$_2$-related defects in zincblend-CdTe and wurtzite-CdSe were reported by Lavrov *et al* [Phys. Rev. B **84**, 233201 (2011), AIP conf. Proc. **1583**, 169 (2014)]. They clearly showed based on their experimental work that the IR absorption bands at 1096.8 and 1108.4 cm$^{-1}$ in CdTe samples are associated with the vibrational modes of...
Sakshin Bunthawin
(Biotechnology of Electromechanics Research Unit, Science of Physics, Faculty of Technology and Environment, Prince of Songkla University, Kathu, Phuket 83120, Thailand)
21/05/2015, 08:00
The present study proposes another alternative approach to model the geometry of Nile tilapia egg for evaluation of the induced transmembrane potential. The actual shape of tilapia egg is an asymmetrical prolate spheroid with a short prolate spheroid bottom and a more elongate prolate spheroid at the top with a common equator rather than a symmetrical prolate spheroid. Unfortunately, the...
Ms
Jongrak Sanglao
(Department of Physics and Materials Science, Faculty of science,Chiang Mai University, Chiang Mai, 50200, Thailand)
21/05/2015, 08:00
Capacitively Coupled Contactless Conductivity Detection (C$^4$D) is the detection technique used to detect both charged and non-charged particles in solution when performing electrophoretic separation in microfluidic devices. With the C$^4$D electrodes not directly exposed to solution, contamination of detecting specimen can be avoided. In this work, the new planar micro-size C$^4$D electrodes...
Ms
Sirinapa Arjyotha
(Program of Physics, Faculty of Science and Technology, Chiang Rai Rajabhat University, Chiangrai, Thailand 57100)
21/05/2015, 08:00
Astronomy, Astrophysics, and Cosmology
Oral presentation
Cataclysmic Variables (CVs) are close binaries consisting of an accreting white dwarf and a low-mass main sequence companion. We have initiated in searching new CVs using their outburst properties with the primary aim to identify short-period systems which are rare but are great of importance to understand close binary evolution. Here, we present time-resolved photometry of new CVs in...
Dr
Singha Prasitpong
(Faculty of Education, Thaksin University, 140 Kanchanawanit Rd., Meuang Songkhla District, Songkhla 90000)
21/05/2015, 08:00
The purpose of this study is to explore the learning expectation of 127 pre-service physics teachers from faculty of education, Thaksin University. The assessment instrument is a 34-item Likert-scale of the Maryland Physics Expectations (MPEX) survey, which consists of 6 clusters namely independence, coherent, content, reality link, math link and effort. Students ‘responses to the survey were...
Mr
Ittiwat Meesap
(Undergraduate student in Manufacturing System Engineering Program, College of Data Storage Innovation King Mongkut’s Institute of Technology Ladkrabang, Bangkok, Thailand, 10520), Mr
Tossapol Rattanapongwisut
(Undergraduate student in Manufacturing System Engineering Program, College of Data Storage Innovation King Mongkut’s Institute of Technology Ladkrabang, Bangkok, Thailand, 10520)
21/05/2015, 08:00
A Higher operating temperature increases a risk of mainboard in computer malfunction. In this work, the heat transfer and thermal distribution on a mainboard were investigated based on finite element analysis. We proposed boundary conditions and parameters at least to be defined. The results of simulation were compared with the actual results measured by the thermal imager. The comparison...
Sakshin Bunthawin
(Biotechnology of Electromechanics Research Unit, Science of Physics, Faculty of Technology and Environment, Prince of Songkla University, Kathu, Phuket 83120, Thailand)
21/05/2015, 08:00
The present study proposes an alternative technique of monosex-male reversal for the commercially important marine fish, blue-spotted coral trout ($\textit{Plectropomus leopardus}$), using transient square pulse-electric and androgen hormone dose. The egg of $\textit{P.leopardus}$ had a simple spherical shape ($ \approx 0.8 \pm 0.1$ mm) and its critical age of 6-19 hpf (hour post...
Teerapat Payupol
(Department of Physics, Faculty of Science, Chulalongkorn University, Bangkok 10330 , Thailand)
21/05/2015, 08:00
A search for standard model Higgs boson is performed by analyzing the data from proton-proton collision recorded by the CMS experiment at center-of-mass energy of 8 TeV. The data is saved in the form of ROOT files. In this project, the data already have been reconstructed, identified and isolated physics objects such as electrons, muons, photons, etc. Then various properties of these physics...
Sakshin Bunthawin
(Biotechnology of Electromechanics Research Unit, Science of Physics, Faculty of Technology and Environment, Prince of Songkla University, Kathu, Phuket 83120, Thailand)
21/05/2015, 08:00
The multiple-parallel plate electrode equipped with a sequential signal generator (SSG) (to be patented) has been developed for on-site yeast separations in the brewery industry. Dead and living yeast cells were separated by using non-uniform sinusoidal electric fields. The SSG was developed from our previous lab-scale version to produce a sinusoidal phase to generate out-of-phase electric...
Kittipoom Mala
(Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai, 50200, Thailand; Physics Education Research Laboratory, Faculty of Science, Chiang Mai University, Chiang Mai, 50200, Thailand)
21/05/2015, 08:00
This study aimed to calculate and to determine experimentally a focal length of a simple thick lens. The thick lens made of a round-bottom bottle (flask) completely filled with transparent liquid (such as water or oil). Four different sizes of a round-bottom flask including 100, 250, 500 ml and 1000 ml were used to change the diameter of thick lens. The focal length of thick lens was...
Ms
Thitinan Chantramontol
(Manufacturing System Engineering Program, College of Data Storage Innovation, King Mongkut’s Institute of Technology Ladkrabang, Bangkok, Thailand, 10520)
21/05/2015, 08:00
In this study, the vibration characteristics of Thai traditional brass gong were numerically investigated based on finite element method (FEM) in three dimensions. We presented a methodology, boundary conditions and other parameters, which are important to be set. Preliminary results of simulation show set of natural frequencies and the corresponding mode shapes that were compared with the...
Ms
Pokonwong Suthichon
(Department of Physics and Material Science, Faculty of Science, Chiang Mai University, Chiang Mai, 50200, Thailand),
Pornrat Wattanakasiwich
(Department of Physics and Material Science, Faculty of Science, Chiang Mai University, Chiang Mai, 50200, Thailand)
21/05/2015, 08:00
This paper aimed to review literatures about how mobile phone is implemented in teaching physics from more than twenties papers in journals with a section on physics teaching such as Physics Education, European Journal of Physics, The Physics Teacher, American Journal of Physics, etc. In the past few years, technology of smart mobile phones has changed the way we lives and also are going to...
Ms
Asleena SALAEH
(Acoustics Laboratory, School of Science, Walailak University, Nakhon Si Thammara, Thialand 80160)
21/05/2015, 08:00
Thailand was listed as the third in palm oil production in the world with the plantation area of about 5600 km$^2$ as in 2010. The plantation area is increasing due to the demand for the oil. As a result, there is plenty palm biomass leftover after each replanting process of oil palm trees. Biomass from each part of oil palm tree has been investigated for various applications such as...
Mr
Angkhan Intanin
(Department of Physics, Faculty of Science, Mahasarakham University, THAILAND 44150)
21/05/2015, 08:00
We present a new method to construct a stability diagram of a serial quantum dot system. The partition function and average charge numbers of the system were calculated by means of imaginary-time path integrals. Consequently, the stability diagram for the quantum dot system was obtained by projecting the average charge numbers of the system to the gate voltage-phase space. To verify the...
Kittipong Limchuchua
(Mahidol Wittayanusorn School, Nakhon Pathom 73170, Thailand)
21/05/2015, 08:00
In this work, density functional theory (DFT) has been performed to investigate high-pressure phase transitions of TlX (X = N, P, As). Both standard GGA and LDA functionals with norm-conserving pseudopotential are used to compare each other in recent work which the calculation results are reported in form GGA (LDA). Based on the previous theoretical predictions, B3-to-B1 (B4-to-B1 for TlN) are...
Sakshin Bunthawin
(Biotechnology of Electromechanics Research Unit, Science of Physics, Faculty of Technology and Environment, Prince of Songkla University, Kathu, Phuket 83120, Thailand)
21/05/2015, 08:00
The present study employs exponential decay pulse-electric field inductions to enhance sex reversal of Nile tilapia eggs in suspensions for monosex-male. The novel technique was the pilot study to initiate the usage of natural androgen hormone of $\textit{Butea superba}$ (Red Kwao Krua) extract instead of our previous electroporation medium of 17$\alpha$ - methyltestosterone (MT). The eggs of...
Mr
Rathaphol Yooyued
(Department of Physics, Faculty of Science, Mahidol University, Bangkok, THAILAND 10400)
21/05/2015, 08:00
There are various strategies for solving physics problems in mechanics. Each strategy contains particular steps that are appropriate for particular topics in mechanics. One of the most important steps in almost all strategies is drawing a free-body diagram (FBD). It is an essential skill students must have in order to solve physics problems successfully. In this study, we conducted a survey of...
Dr
Umporn Wutchana
(Department of curriculum and instruction, Faculty of Education, Ramkhamhaeng University, Bangkok, 10240, Thailand)
21/05/2015, 08:00
To obvious how leading schools conduct their physics classrooms, this study has surveyed teaching strategies in physics classrooms of three leading schools (Mahidol Wittaynusorn, Triamudom Suksa, and Suankularb Wittayalai) using a 2 page survey. The contents of the survey were separated into two parts. Part 1 includes questions asking students to provide their personal information such as...
Mr
Mana Chatmontree
(Department of physics, Faculty of Science, UbonRatchathani University, Thailand, 34190)
21/05/2015, 08:00
Over the last 30 years, physics education research revealed that students already have a number of ideas about how physical systems behave, even before they start to study physics. In many cases, these ideas differ from accepted scientific ideas. Other research showed that it is difficult for students to change their initial ideas and found that traditional instruction is relatively...
Mr
Putcharapong Prawai
(Department of physics, Faculty of Science, Ubon Ratchathani University, Thailand, 34190)
21/05/2015, 08:00
The complexity of physics has implications for the teaching of physics today. That physics is a very complex subject is shown from the research on problem solving and misconceptions that has dominated the field during the past 30 years. It is commonly known that students have difficulty for solving physics problems because of mathematic skill. In this study 120 high school physics students...
Mr
Chalermwat PINNOI
(Department of Physics, Faculty of Science, Mahidol University, Bangkok, THAILAND 10400)
21/05/2015, 08:00
In crime scene reconstruction, the patterns of bloodstains serve us opportunities to determine the location of bloods source which can be referred to the position of victim or weapon used. For medium velocity blood spatters, generally the victim is hit by a blunt object (such as a hammer or a baseball bat). The trajectories of blood drops are in projectile motions. In this work, the projectile...
Ms
Yupaporn Jarearnkhat
(Department of Education in Science and Technology, Faculty of Education, Khon Kaen University, Thailand, 40002)
21/05/2015, 08:00
This study was qualitative research aimed to improve conceptual understanding of grade 11 students on resistor circuit through Predict-Observe-Explain (POE) approach. There were 34 grade 11 students those studied in the second semester of academic year 2014 (November 2014 to March 2015) in Strisuksa School, the Secondary Educational Service Area 27, Roi-Et province, participated this study....
Ms
Kanita Srithanee
(Division of Science Education, Faculty of Education, Khon Kaen University, Khon Kaen 40002, Thailand)
21/05/2015, 08:00
The purpose of this research was to develop scientific concepts of momentum and collision for grade 10th students though Predict-Observe-Explain (POE) leaning activities. There were 34 grade 10 students of Roi-Et Wittayalai School, during the second semester of academic year 2014 (November 2014 – March 2015) participated this study. There were two research tools were used in this study....
Ms
Mateeya Martjun
(Department of Education in Science and Technology, Faculty of Education, Khon Kaen University, Thailand, 40002)
21/05/2015, 08:00
This research was aimed to study and enhance the students’ concepts on electrostatics by using Predicts-Observe-Explain approached. There were 45 grade 11 students, second semester of academic year 2014 (November 2014-March 2015), Roi-Et Wittayalai School Office of Secondary Education Service Area 27, participated this study. This research was performed in qualitative research designed. There...
Mr
Thoedsak Nachampa
(Department of Education in Science and Technology, Faculty of Education, Khon Kaen University, Thailand, 40002)
21/05/2015, 08:00
This research was aimed to study and enhance the students’ concepts on motion in uniform field through Predict-Observe-Explain (POE) by using video demonstration. There were 29 grade 10 students, second semester of academic year 2014, Nareenukun School Office of Secondary Education Service Area 29. This research was performed in qualitative research designed. There were three main research...
Mr
Songsith Khunsawat
(Department of Education in Science and Technology, Faculty of Education, Khon Kaen University, Thailand, 40002)
21/05/2015, 08:00
This research aims to develop Predict – Observe – Explain (POE) approach learning activities and to develop scientific concepts in Electric current. There were 28 grade 11 students, second semester of academic year 2014 (November 2014 – March 2015), Narinukul School Office Mathayomsuksa Area 29, participated this study. The research methodology is classroom – based action research. The...
Ms
Thanida Sujarittham
(Science and Technology Education Programme, Institute for Innovative Learning, Mahidol University, Nakhon Pathom, Thailand 73170)
21/05/2015, 08:00
Guided lecture worksheets have been used in the introductory physics courses for first-year science students at Mahidol University. A set of worksheets was regularly distributed to students before starting each lesson and used as a teaching tool during each lecture. This was done throughout the course. In this study, we have developed worksheets for teaching electrostatics in large-class...
Nuchalee Schwertfager
(School of Physics and NANOTEC-SUT Center of Excellence on Advanced Functional Nanomaterials, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand; Thailand Center of Excellence in Physics (ThEP Center), Commission on Higher Education, Bangkok 10400, Thailand)
21/05/2015, 08:00
The electronic band structure of graphene was calculated using the full-potential linearized muffin-tin orbital (FP-LMTO) method. Its resonant inelastic x-ray scattering (RIXS) spectra at various x-ray excitation energies were calculated based on Kramers-Heisenberg equation. It is found that the RIXS spectra show distinct dispersive features and are interpreted as being due to the...
Mr
Paritat Picitmal
(Department of Education in Science and Technology, Faculty of Education, KhonKaen University, Thailand, 40002)
21/05/2015, 08:00
The purpose of this research was to study scientific concepts of the student in conservation of mechanical energy both before and after learning through predict-observe-explain (POE) approach. The target group was 34 grade 10 students, Strisuksa School. The Office of Secondary Education District Area 27, Roi-Et, those studied in the second semester, academic of year 2014. The students’...
Piimonpun Prasongsri
(Department of Physics and Material Science, Faculty of Science, Chiang Mai University, Chiang Mai, 50200, Thailand; Physics Education Research Laboratory, Faculty of Science, Chiang Mai University, Chiang Mai, 50200, Thailand)
21/05/2015, 08:00
This study aimed to investigate thermodynamic properties of a rubber balloon including hysteresis and cooling effect of a deflated balloon. Firstly, pressure inside a balloon was measured using a Vernier pressure sensor and plotted as a function of the balloon averaged radius. Well-known mathematical models of inflated balloon including Mooney-Rivlin, Ogden and Gent-Gent models were used to...
Ms
Sumana Aungplachai
(Department of Physics, Faculty of science, King Mongkut’s University of technology Thonburi , Bangkok ,THAILAND 10140)
21/05/2015, 08:00
The objective of this study was designed the effective learning activities for studying in the interference and diffraction patterns of light. The learning package of the interference and the diffraction of light (LPID) were used with the cooperative learning, Student Teams-Achievement Divisions (STAD) technique, for the secondary high school students. LPID was designed that consists of the...
Numpong Punyaratabandhu
(Department of Physics, Faculty of Science, Chulalongkorn University, Payathai Rd., Pathumwan, Bangkok, 10330 Thailand)
21/05/2015, 08:00
The main function of human kidneys is to filter blood and remove metabolic waste while retaining the normal blood composition and volume. The first step of this process is blood filtration through the glomerular capillary wall, which consists of multiple layers: endothelium cell layer, the glomerular basement membrane (GBM) and the epithelial foot processes with their interconnecting slit...
Mr
Phusit Juntana
(Department of physics, Faculty of Science, UbonRatchathani University, Thailand, 34190)
21/05/2015, 08:00
A protoboard is a thin plastic board used to hold electronic components such as resisters, transistors, and chips that are wired together, and is used to construct prototypes of electronic circuits. Although a protoboard is an appropriate tool for simply testing a prototype circuit or hooking up a quick experiment, it is difficult for students to use because they become confused about the...
Mrs
Lanjakorn Tongrueng
(Department of physics, Faculty of Science, UbonRatchathani University, Thailand 34190)
21/05/2015, 08:00
This research aimed to develop students’ conceptual understanding and
problem-solving skills in work and energy work using active workbooks. These workbooks were prepared in advance by the teacher and consisted of essential concepts, ideas, diagrams, graphs, problems, and conclusions. The participants in the research were 23
grade 10 students at Khiansaphittakom School, AmphurKhainsa,...
Ms
Rapeepat SONKRUA
(Department of Physics, Faculty of science, King Mongkut’s University of technology Thonburi , Bangkok ,THAILAND 10140)
21/05/2015, 08:00
The teaching technique about the understanding for colour light and their mixed that used the colour light mixer together with CIPPA model was presented in this study. The colour light mixer was made from three Light Emitting Diode (LED) e.g., red , green and blue. Our colour light mixer can be generate a smooth and clear colour and can be control light intensity. For the teaching technique...
Mr
Akapong Buachoom
(Department of physics, Faculty of Science, UbonRatchathani University, Thailand, 34190), Dr
Sura Wuttiprom
(Department of physics, Faculty of Science, UbonRatchathani University, Thailand, 34190)
21/05/2015, 08:00
The purpose of this research was to study the development of students’ conceptions of static electricity using a laboratory group investigation model. The participants were 34 grade 10 students from Srikoonwittayabunlang School, Amnatcharoen in the second semester of the 2014 academic year. A one group pre-test/post-test design was employed in the study, and the research tools consisted of...
Rattanachai Kowong
(Department of Industrial Physics and Medical Instrumentation, Faculty of Applied Science, Lasers and Optics Research Group (LANDOS), Science and Technology Institute, King Mongkut's University of Technology North Bangkok)
21/05/2015, 08:15
Optics, Non-linear optics, Laser Physics, Ultrafast Phenomena
Oral presentation
We propose a new approach, the Arc Discharge Drawing (ADD) technique, to
fabricate silica fibers with diameters less than the wavelength of commercial
available lasers. With this single-step technique, silica wires with diameters
as small as 50 nm were demonstrated. This technique would provide an attractive
alternative to current approaches to fabricate the silica nanowires. For...
Mr
Nuttanan Tanasanchai
(Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand),
Waranont Anukool
(Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand)
21/05/2015, 08:15
Atomic Physics, Quantum Physics, Molecular and Chemical Physics
Oral presentation
We have trapped a laser-cooled single rubidium-85 atom in an optical dipole trap using sub-Poissonian loading scheme. The trap beam with 4mK depth was produced with 830nm focused laser beam. Our optical circuits based on the two-beam trap and homemade equipments are described. The photograph of a single rubidium-85 atom taken for the first time in Thailand is presented.
Mr
Nattapon Kasangam
(Department of Physics, Faculty of Science, Khonkaen University, Khonkaen, THAILAND 40002)
21/05/2015, 08:15
Material Physics, Nanoscale Physics and Nanotechnology
Oral presentation
In this project, carbon encapsulated Fe${}_3$O${}_4$ for supercapacitors electrode was synthesized using Fe${}_3$(No${}_3$)${}_3$ 9H${}_2$O and C${}_6$H${}_1{}_2$O${}_6$ as precursors and NaCl as supporting material. The mixture was annealed at 700 ${}^{\circ}$C, 720 ${}^{\circ}$C, 750 ${}^{\circ}$C and 770 ${}^{\circ}$C in argon atmosphere for 2 hours and heated at 250 ${}^{\circ}$C in air...
Dr
David Mkrtichian
(National Astronomical Research Institute of Thailand, Chiang Mai 50200, Thailand)
21/05/2015, 08:15
Astronomy, Astrophysics, and Cosmology
Oral presentation
We present results of study of oscillation of a sample of A-type mass-accreting components of Algol-type eclipsing binary stars (so called oEA stars). This work is a part of ongoing THAi Southern Survey for OEA Stars (THASSOS). High-precision photometry obtained at different observatories was used to investigate the low-amplitude acoustic variations of brightness of primary components. The...
Mr
Phumipat Kittiboonanan
(Department of Industrial Physics and Medical Instrumentation, Faculty of Applied Science, King Mongkut’s University of Technology North Bangkok, Bangkok 10800 Thailand)
21/05/2015, 08:30
Optics, Non-linear optics, Laser Physics, Ultrafast Phenomena
Oral presentation
In this paper, we present the creation of a new class of an optical surface measurement based on laser scattering principle. This technique is aimed to serve as a non-destructive testing tool for laser removal of graffiti. The laser scattering system consists of a weak HeNe laser beam that is split into two arms, the reference arm and the sample arm. The reference arm serves as the unaffected...
Mr
Khunagorn Chanthorn
(School of Physics, Institute of Science, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand)
21/05/2015, 08:30
Astronomy, Astrophysics, and Cosmology
Oral presentation
We followed up the new eclipsing white dwarf main sequence SDSS J102102.25+174439.9 with a short orbital period of 0.14 days from the Sloan Digital Sky Survey The system has been observed by using on the 2.4m telescope at the Thai National Observatory (TNO) with ULTRASPEC instrument. Our multi-band observations shows peculiar dips about 15 minute after the primary eclipse. Such dips in WDMS...
Rattakorn Kaewuam
(Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand),
Waranont Anukool
(Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand)
21/05/2015, 08:30
Atomic Physics, Quantum Physics, Molecular and Chemical Physics
Oral presentation
We use the density matrix formulation to study the dynamic of atom-photon interaction of Rb-85 atoms under the cooling and repumping laser fields in a magneto-optical trap (MOT). The spontaneous emission process is taken into account using the fully-quantized theory. The obtained master equations are numerically solved for the four-level system including two levels of $5^2S_{1/2}F=2,3$ and two...
Mr
Aram Boonti
(Department of Physics, Faculty of Science,Chiang Mai University, Chiang Mai, THAILAND 50200)
21/05/2015, 08:30
Material Physics, Nanoscale Physics and Nanotechnology
Oral presentation
It has been shown that semiconducting materials with particle size comparable to exciton Bohr radius, called “quantum dot,” exhibit distinct physical property referring to their bulk. This leads to various applications in computing, biology, solar cell, light emitting, and photodetector. In this work, we synthesized quantum dots of copper telluride on films of zinc oxide using successive ionic...
Kritsana Srakowl
(Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand)
21/05/2015, 08:45
Atomic Physics, Quantum Physics, Molecular and Chemical Physics
Oral presentation
We investigate applicability of a novel atom interferometer consisting of two concentric rings for precision measurements. The investigation is carried out with a computer simulation of Gross-Pitaevskii equations which monitors low energy vibrational modes inside of the interferometer under various ring geometries. From each eigenmodes, the fringe visibility between thermal ensemble and...
Ms
Tipnirin Vajanarat
(Department of Physics, Faculty of Science, Chulalongkorn University, Bangkok, THAILAND 10330)
21/05/2015, 08:45
Material Physics, Nanoscale Physics and Nanotechnology
Oral presentation
Iron boride nanoparticles are one of soft ferromagnetic materials which also contain boron. These properties combined the possibility of magnetically targeting the nanoparticles, use their hysteresis loop to cause thermal damage of tissue, as well as provide boron neutron activation medicine in cancer therapy applications. Unfortunately, iron boride may be easily oxidized under oxygen rich...
Mr
Kittipong Wangnok
(School of Physics, Institute of Science, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand)
21/05/2015, 08:45
Astronomy, Astrophysics, and Cosmology
Oral presentation
Post common-envelope binaries (PCEBs) are known as one of the end products of the complex common-envelope process. These systems typically consist of white dwarf star with a low mass companion. While most of PCEBs usually have short orbital periods of a few hours, some systems are found to be in long (>1 day) period. In this work, we present the preliminary result of our follow-up photometric...
Mr
Ratchanikorn Koomramyakul
(Division of Physics, Mahidol Wittayanusorn School, Phutthamonthon, Nakhon Pathom 73170, Thailand)
21/05/2015, 08:45
Optics, Non-linear optics, Laser Physics, Ultrafast Phenomena
Oral presentation
The study of quantum optics in Mahidol Wittayanusorn School has established for four years. The latest study was conducted by attenuating blue laser and using the down-conversion crystal. The result of that study was a degree of second-order coherence = 0.412 ± 0.014 which violating the classical inequality. However that is not completely confirmed that single photon exists. The solid...
Pattana Suwanyangyaun
(Nanoscience and Technology, Graduate School, Chulalongkorn University, Bangkok, THAILAND 10330)
21/05/2015, 09:00
Material Physics, Nanoscale Physics and Nanotechnology
Oral presentation
It is known that the cubic GaN (c-GaN) structure using epitaxial lateral overgrowth (ELO) could be controlled by mask fill factor (ratio of the open width to the pattern period), mask direction, and growth temperature. Particularly, ELO GaN on the [110] oriented stripe-patterned GaAs (001) exhibits hexagonal phase structure. On the other hand, in this work, we have proposed the use of the...
Mr
Paradai Phanpanich
(Department of Physics, Faculty of science, Mahidol university, 272 Rama 6 Road Ratchathewi Bangkok, 10400)
21/05/2015, 09:00
Optics, Non-linear optics, Laser Physics, Ultrafast Phenomena
Oral presentation
Fiber optic displacement sensor (FODS) is demonstrated to probe the linear thermal expansion of materials. The device employs an intensity modulation technique which is based on comparing the transmitted light intensity against that of the launch light to provide information on the displacement between the probe and the target. Steel and Aluminum were used as the target. From the thermal...
Ms
Sawatkamol Pichadee
(Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand)
21/05/2015, 09:00
Astronomy, Astrophysics, and Cosmology
Oral presentation
GJ3470b is a Uranus-mass exoplanet, orbiting around M dwarf (Bonfils et al. 2012). In this work, R-filter transit observations were conducted by using the 0.5-meter telescope at Thai National Observatory (TNO) and the 0.6-meter telescope at Cerro Tololo Inter-American Observatory (CTIO) in 2013-2015. From the light curves, the orbital elements of GJ3470b were obtained. In addition, the time of...
Jindaratsamee Phrompao
(Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand)
21/05/2015, 09:00
Atomic Physics, Quantum Physics, Molecular and Chemical Physics
Oral presentation
We numerically calculate transmission, reflection and cavity-modes inside a Fabry-Perot interferometer using the split-operator method. Unlike traditional methods, the cavity's eigenmodes are computed from temporal propagation instead of spatial propagation which makes the calculation of cavity scanning more practical.
Also the split-operator coexist with master equations of fully quantum...
Mr
Lunchakorn Tannukij
(Department of Physics, Faculty of Science, Mahidol University, Bangkok 10400, Thailand)
21/05/2015, 09:15
Astronomy, Astrophysics, and Cosmology
Oral presentation
Massive gravity is one of the well-known modification of Einstein’s general relativity by promoting the massless mediator, so-called graviton, to be a massive one. As the modified gravity, it is natural to consider the black hole solution of the theory. Here we present the static spherically symmetric black hole solution in massive gravity, proposed by de Rham, Gabadadze, and Tolley, along...
Mr
Phongbandhu Sritonwong
(Nanoscience and Technology, Graduate School, Chulalongkorn University, Bangkok, THAILAND 10330)
21/05/2015, 09:15
Material Physics, Nanoscale Physics and Nanotechnology
Oral presentation
Effects of rapid thermal annealing on the structural properties of InGaPN layers grown on GaAs (001) substrates by metal organics vapor phase epitaxy (MOVPE) have comprehensively investigated by using high resolution X-ray diffraction (HRXRD) and Raman spectroscopy, scanning electron microscopy (SEM) and atomic force microscopy (AFM). To obtain the lattice-match InGaPN on GaAs, flow rates of...
Apichayaporn Ratkata
(Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand)
21/05/2015, 09:15
Atomic Physics, Quantum Physics, Molecular and Chemical Physics
Oral presentation
We consider the efficient creation of heralded dicke states in an atomic ensemble trapped in a high finesse optical cavity. Weak resonant light in free-space mode transverse to the cavity is efficiently absorbed by the optically dense sample. Subsequent stimulated Raman scattering into the cavity mode dominates over free space scattering because of the high single atom cooperativity of the...
Dr
Areefen Rassamesard
(Division of Physics, Faculty of Science and Technology, Prince of Songkla Universtity, Pattani Campus, THAILAND 94000)
21/05/2015, 09:15
Environmental Physics, Atmospheric Physics, Geophysics and Renewable Energy
Oral presentation
In this research have been simulated geometrical structures, molecular orbital, charge transports and photophysics of complex alternating donor-acceptor oligomers using in photo-active layer of polymer solar cell applications. Poly(3-hexylthiophene) (P3HT) was selected as an electron donor, while different azole such as oxadiazole (OXD), triazole (TAZ) and thienothiadiazole (TD) were used as...
Sujinda Chaiyachad
(Department of Physics, Faculty of Science, Khon Kaen University, Khon Kaen, THAILAND 40002)
21/05/2015, 09:30
Material Physics, Nanoscale Physics and Nanotechnology
Oral presentation
In this project, graphite encapsulated magnetite nanoparticle in carbon matrix was synthesized using a chemical vapor deposition (CVD) and used as a counter electrode of dye-sensitized solar cells (DSSCs). The CVD reaction employed iron(III)nitrate nanohydrate and glucose as precursors, NaCl as a supporting material and methane as a carbon source. The reaction temperature was varied at 700,...
Mr
Supakorn Saelue
(Department of Physics, Faculty of Science, Chulalongkorn University, Bangkok, THAILAND 10330)
21/05/2015, 09:30
Astronomy, Astrophysics, and Cosmology
Oral presentation
We attempt to explain the trajectory of a particle around the massive object using an effective gravitational potential obtained from dRGT massive gravity theory. The dRGT massive gravity is the modification of the Einstein’s general relativity (GR) by considering theory with a massive graviton, while in GR the graviton is massless. We start with finding the static and spherically symmetric...
Ms
Wasuporn Hirunsit
(Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand)
21/05/2015, 09:30
Atomic Physics, Quantum Physics, Molecular and Chemical Physics
Oral presentation
Lead-free calcium zirconate (CaZrO3) is an important raw material for industry applications because of its excellent thermal and electrical properties such as, high dielectric constant and low dielectric loss [1]. However, in order to achieve pure CaZrO3 powder, high calcining temperatures ( 1300 $^\circ$C) and long dwelling times for solid reactions between the CaCO3 and ZrO2 powders are...
Mr
Prateep Pimsarn
(Applied Optics Research Group, Department of Physics, Faculty of Science, Mahidol University, Bangkok, Thailand 10400)
21/05/2015, 09:30
The circular polarization filter is designed in 1-dimensional (1D) chiral photonic crystal structure with defect. In this simulation, the structure is composed of 10 pairs of periodic layers of high (AgGaS$_2$) and low (quartz) refractive index chiral materials with defect layer in the middle. By using finite-different time-domain (FDTD) method, the transmission spectrum from structure reveals...
Shyama Rath
(Department of Physics, Faculty of Science, Chulalongkorn University, Bangkok 10330, THAILAND; Department of Physics and Astrophysics, University of Delhi, Delhi-110007, INDIA)
21/05/2015, 09:45
The wide bandgap semiconducting oxide, ZnO is attractive for a range of optoelectronic devices due to its dual advantages of high optical transparency and electrical conductivity. In view of its applications, ZnO films have been grown by a variety of techniques and different methods of material engineering have been used to tailor its properties. In this study, we show the effect of varying...
Mr
Theerapat Tansuwannont
(Department of Physics, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand)
21/05/2015, 09:45
Atomic Physics, Quantum Physics, Molecular and Chemical Physics
Oral presentation
Quantum algorithm is an algorithm for solving mathematical problems using quantum systems encoded as information, which is found to outperform classical algorithms. The objective of this study is to develop a quantum algorithm for finding the roots of $n^{\mathrm{th}}$ degree polynomials where $n$ is any positive integer. In classical algorithm, the resources required for solving this problem...
Mr
Orarik Tasuya
(Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand)
21/05/2015, 09:45
Astronomy, Astrophysics, and Cosmology
Oral presentation
We present a study of star formation, stellar age and metallicity, and interactions between galaxies in a low-redshift group, NGC 4065 group. Imaging data were taken from 2.4 meter telescope at Thai National Observatory (TNO) for B, V and R$_\mathrm{C}$ broadband filters and [S$~\small{\mathrm{II}}$] and Red-continuum narrowband filters. There are 21 galaxies in our sample. The star formation...
Mr
Bovornpratch Vijarnwannaluk
(Department of Physics, Faculty of Science, Chulalongkorn University, Bangkok 10330 , Thailand)
21/05/2015, 10:00
Astronomy, Astrophysics, and Cosmology
Oral presentation
We report the ongoing variability monitoring program for a well-defined, flux-limited sample of active galactic nuclei (with Bj<18 mag) through a multi-band optical imaging using Thailand's 0.6-m remotely-operated telescope at Cerro Tololo Inter-American Observatory, Chile. Our goal is to search for month-time scales outbursts to identify potential targets for spectroscopic follow-up to...
Mr
Hariphan Philathong
(Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand)
21/05/2015, 10:00
Atomic Physics, Quantum Physics, Molecular and Chemical Physics
Oral presentation
Synthetic magnetic field is recently demonstrated theoretically and experimentally in an ensemble of neutral atoms through Rashba effect. In this presentation, Schwinger’s oscillator model is used to demonstrate the Rashba effect in favor of traditional angular momentum bases. The Schwinger’s model is useful in setting up the master equation of atoms interacting with field both in free space...
Mr
Anut Sangka
(School of Physics, Institute of Science, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand)
21/05/2015, 10:15
Astronomy, Astrophysics, and Cosmology
Oral presentation
One of the strongest evidence of the currently favoured standard ΛCDM (Lambda cold dark matter) model with the Big Bang origin came from the Cosmic Microwave Background (CMB) radiation measurement which show us the average temperature of the universe is 2.725 K with the Gaussian fluctuations of about 18 µK RMS. However there presents some anomalies that can be observed by CMB experiment. One...
Mr
Chalad Yuenyao
(Department of Physics, Faculty of Science, Prince of Songkla University, Hatyai, Songkhla, THAILAND 90112; Thailand Excellence Center in Physics (ThEP), Bangkok, THAILAND 10400)
21/05/2015, 10:15
Preparing of polysulfone (PSF) gas separation membranes by dry/wet phase inversion technique were conducted in this work. The effect of evaporation time (ET) on the morphology, structure and gas separation performance of produced PSF membranes was investigated. The ET was varied for 0, 10, 30, 60, and 120 s. Morphology and structure of membrane samples were analyzed through the SEM micrograph...
Mr
Tanapat Ratchatorn
(Department of Physics, Faculty of Science, Chulalongkorn University, Bangkok, THAILAND 10330)
21/05/2015, 10:30
Eu-doped BaTiO$_3$ thin films were deposited on quartz and borosilicate glass substrates by a sol-gel spin coating process. The films were grown with various growth parameters including film thickness, spinning speed, annealing time, annealing temperature and concentration of europium to evaluate their influence on film luminescent properties. We studied their luminescent properties using...
Dr
Manzoor Ahmad Malik
(Department of Physics, faculty of Physical and Material Sciences, University of Kashmir, Srinagar 190006, India)
21/05/2015, 10:30
Astronomy, Astrophysics, and Cosmology
Oral presentation
Cluster expansion method of statistical mechanics has proved to be a useful tool in describing gravitational galaxy clustering as a cosmological many body problem. The method yields a spatial galaxy distribution function, a generalized Poisson, in excellent agreement with observations and N-body simulation results. Some recent developments include distribution function for a multi component...
Rak Chitchamnong
(Department of Physics, Faculty of Science, Mahidol University, Bangkok 10400 Thailand)
21/05/2015, 10:45
Astronomy, Astrophysics, and Cosmology
Oral presentation
The rotation curve of the visible stars and gas in a galaxy can be presented by plotting its orbital velocity. However the galaxy rotation curve obtained by using the relation of Newton’s universal gravitation fails to explain the observed rotation curve. This has led to the dark matter hypothesis. At present there is no direct evidence for the detection of dark matter and the area is still...
Prof.
Eric MAZUR
(Harvard University, USA)
21/05/2015, 11:00
Plenary
Shining intense, ultrashort laser pulses on the surface of a crystalline silicon wafer drastically changes the optical, material and electronic properties of the wafer. The resulting textured surface is highly absorbing and looks black to the eye. The properties of this 'black silicon' make it useful for a wide range of commercial devices. In particular, we have been able to fabricate...
Ms
Nattha Buatong
(Department of Physics, Faculty of Science, Kasetsart University, Bangkok, THAILAND 10900)
21/05/2015, 13:00
With power conversion efficiency in continuous growth, quantum dot-sensitized solar cells
(QDSSCs) are recently under high interest; however there is no such perfect cell yet developed for these devices. As the fundamental model of QDSSCs, the morphology of the TiO${}_2$ photoanode plays an important role in photovoltaic performance. Herein, the TiO${}_2$ films based on nanorods (TiR) and...
Mr
Yuttapichai Khummanee
(Department of Physics, Faculty of Science, Kasetsart University, Bangkok, THAILAND 10900)
21/05/2015, 13:00
Al-doped ZnO (AZO)/Ag/AZO tri-layer thin films were deposited on glass substrate by RF-sputtering. The thickness of AZO layer at the top and bottom of the film was varied at 35, 50 and 90 nm and the thickness of Ag layer was fixed at 62 nm. XRD result confirms that all AZO/Ag/AZO tri-layer films were composed of ZnO (HCP) phase in (002) direction and Ag (FCC) phase in (111) and (200)...
Wichian Siriprom
(Faculty of Science at Si Racha, Kasetsart University, Si Racha campus, Chonburi, THAILAND 20230)
21/05/2015, 13:00
This work aims at characterizing the physical and chemical properties of chitosan which extract from the Paphia Undulate Shell. The physical and chemical properties have been also discussed in detail which Fourier Transform Infrared Spectroscopy (FTIR), Energy Dispersive X-Ray Fluorescence (EDXRF) and X-Ray Diffraction (XRD), respectively. The result of the XRD pattern indicated the sample has...
Dr
Sumalin Phokha
(Department of Physics, Faculty of Science, Udon Thani Rajabhat University, Udon Thani, THAILAND 41000)
21/05/2015, 13:00
Fe-doped MgO (Mg${}_{1-x}$Fe${}_x$O, $x$ = 0, 0.05, and 0.07) nanoparticles synthesized by the polymer pyrolysis method were investigated. The precursors were calcined at temperatures of 700 ${}^{\circ}$C for 3 hours in air to obtain the phase of MgO. X-ray diffraction (XRD), transmission electron microscopy (TEM), X-ray absorption near edge spectroscopy (XANES), and vibrating sample...
Mr
Pilan Ngiewlay
(Department of Material Science and Nanotechnology, Faculty of Science, Khon Kaen University, Khon Kaen, THAILAND 40002)
21/05/2015, 13:00
Ce${}_{1-x}$Pr${}_x$O${}_2$ ($x$ = 0, 5, 10, 15 and 20) was synthesized by a co-precipitate method. The crystallization temperature started around 300 ${}^{\circ}$C. After calcination at 800 ${}^{\circ}$C for 8 hr, the grains size of undoped sample was about 69 nm. Doping Pr into CeO${}_2$ resulted-in the reduction to grains size. The smallest grains size of 40 nm was observed for...
Dr
Methee Promsawat
(Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai, THAILAND 50200; Materials Science Research Center, Faculty of Science, Chiang Mai University, Chiang Mai, THAILAND 50200)
21/05/2015, 13:00
This work studies effects of metal oxides (MO; M = Zn${}^{2+}$, Cu${}^{+}$ and Ni${}^{2+}$) modifications on phase, microstructure, dielectric, ferroelectric and electrostrictive properties of Pb(Mg${}_{1/3}$Nb${}_{2/3}$)${}_{0.9}$Ti${}_{0.1}$O$_3$ (PMNT) ceramics. Different contents of MO (2 and 4 mol%) were modified into PMNT ceramics. The ceramics with the density about 7.80 g/cm${}^3$ were...
Mr
Nontakoch Siriphongsapak
(Department of Physics, Faculty of Science, King Mongkut's University of Technology Thonburi, Bangkok, THAILAND 10140.)
21/05/2015, 13:00
Zinc oxide (ZnO) nanorods and nanosheets were grown via hydrothermal process on ZnO seed layers synthesized by spin-coating technique on silicon and glass substrates with different precursor concentrations of zinc acetate dihydrate. The concentrations of zinc acetate dihydrate in solution were varied from 6 mM to 500 mM. The ZnO seed layers, ZnO nanorods, and ZnO nanosheets were characterized...
Mr
Paitoon Boonsong
(Advanced Ceramics Laboratory, Ubon Ratchathani University, Ubon Ratchathani, THAILAND 34190)
21/05/2015, 13:00
Ferroelectric glass-ceramics of the Na${}_2$O-BaO-Nb${}_2$O${}_5$-SiO${}_2$ system were obtained from controlled crystallization process performed on the parent glass of composition 20Na${}_2$O-10BaO-30Nb${}_2$O${}_5$-40SiO${}_2$. Nd${}_2$O${}_3$ doping content was varied in the range 0, 0.1 and 0.5 mol%. The glass samples were prepared via a conventional melting method at 1500 $^{\circ}$C in...
Chiow San Wong
(Plasma Technology Research Centre Physics Department, University of Malaya 50603 Kuala Lumpur, Malaysia)
21/05/2015, 13:00
Recently, the development of atmospheric pressure non-thermal plasma has been the research interest of many research groups world wide. This is because it is now realized that there is a need to develope cost effective plasma technology so that it can be more widely used in industry. The atmospheric pressure plasma devices being considered include the glow discharge and the dielectric...
Dr
Ruamporn Potong
(Division of Physics, Faculty of Science and Technology, Rajamangala University of Technology Thanyaburi, Pathum Thani, THAILAND 12110)
21/05/2015, 13:00
The 0-3 barium zirconate titanate˗portland cement composites with carbon addition which are expected to find application in civil engineering. The barium zirconate titanate, portland cement and carbon powder were fabricated using 425 µm barium zirconate titanate particle size at 40% by volume and varying carbon addition at 0.3-2% by volume. The composites were then cured at 60 ºC for 3 days...
Mrs
Kamonrat Wongsamat
(Department of Physics, Faculty of Science, Ubon Ratchathani University)
21/05/2015, 13:00
The purpose of this research is to study the biomass fuel pellets. With cold compressed techniques high pressure. The main raw material used in the experiment are cassava and coffee grounds. Cassava was crushed and coffee grounds is baked and gliding grinded and sieved in the grain size of a 300 - 2000 μm. The samples were mixed with cassava and coffee grounds ratio of 10: 0, 9: 1, 8: 2, 7: 3,...
Ms
Theeranuch Nachaithong
(Materials Science and Nanotechnology Program, Faculty of Science, Khon Kaen University, Khon Kaen, THAILAND 40002)
21/05/2015, 13:00
The influence of annealing in Ar on the dielectric properties of CaCu${}_3$Ti${}_4$O${}_{12}$/CaTiO${}_3$ (CCTO/CTO) composites prepared by a solid state reaction method was studied. The phase composition and the microstructure were characterized by X-ray diffraction and scanning electron microscope with energy dispersive X-ray spectrometry, respectively. High dielectric permittivity values...
Mr
Attaphol Karaphun
(Department of Material Science and Nanotechnology, Faculty of Science, Khon Kaen University, Khon Kaen, THAILAND 40002)
21/05/2015, 13:00
Co-doped SrTiO${}_3$ (SrTi${}_{1-x}$Co${}_x$O${}_3$) ($x$=0, 0.05, 0.1 and 0.15) nanopowders were synthesized by hydrothermal method. Their morphology and structure were studied by scanning electron microscopy (SEM), transmission electron microscopy (TEM) and X-ray diffraction (XRD). Magnetic properties were measured at room temperature using vibrating sample magnetometer (VSM). All samples...
152.
Effect of Annealing Temperature on the Magnetic Properties of Fe Doped SrTiO${}_3$ Nanopapicles
Mr
Likkhasit Wannasen
(Department of Physics, Faculty of Science, Khon Kaen University, Khon Kaen, 40002, Thailand)
21/05/2015, 13:00
SrTi${}_{0.90}$Fe${}_{0.10}$O${}_3$ nanoparticles were synthesized by hydrothermal method. SrTi${}_{0.90}$Fe${}_{0.10}$O${}_3$ samples were annealed at 500, 600 and 700${}^{\circ}$C in Ar. X-ray diffraction (XRD) results indicate a perovskite structure of all samples. TEM image shows SrTi${}_{0.95}$Fe${}_{0.05}$O${}_3$ nanoparticles of a cubic shape with an average size of 64.7 nm. X-ray...
Ms
Wipada Senanon
(Department of Physics, Faculty of Science, Ubon Ratchathani University, Ubon Ratchathani, THAILAND 34190)
21/05/2015, 13:00
Eu$^{3+}$-doped glass-ceramics were prepared in the system CaO-MgO-Al$_2$O$_3$-ZnO-SiO$_2$. Crystallization and luminescence properties of the glass-ceramics were studies by XRD, SEM, and fluorescence spectroscopy. After the heat treatment at the appropriated conditions, the crystalline phase found in the glass-ceramics was diopside (CaMg(SiO$_3$)$_2$) and Mg(Si$_2$O$_6$). There was no...
Ms
Siriwipa Pongpadung
(Materials Science and Nanotechnology Program, Faculty of Science, Khon Kaen University, Khon Kaen, THAILAND 40002)
21/05/2015, 13:00
Copper ferrites (CuFe$_2$O$_4$) were fabricated by self-combustion urea and glycine process (UNP, GNP), polymerized complex (PC), solid-state reaction (SSR), and molten-salt (MS) methods. The synthesized powders were calcined in static air at different temperature from 500 – 900$^{\circ}$C. The effects of the fabrication method on the microstructural and magnetic properties were investigated....
Mareenee Buesa
(Department of Physics, Faculty of Science, Thaksin University, Songkhla, THAILAND 90000)
21/05/2015, 13:00
In this study, the Zn${}_{0.97}$Cu${}_{0.01}$V${}_{0.02}$O ceramics were sintered with It was sintered at the temperature of 900${}^{\circ}$C, 950${}^{\circ}$C, 1000${}^{\circ}$C and 1050${}^{\circ}$C for 5 hours and prepared by using mixed oxide method. The microstructure evolution of the ceramics were studied and investigated. It was found that the grain size were almost constant in the...
Mr
Narongdetch Boothrawong
(Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai, THAILAND 50200)
21/05/2015, 13:00
In this work, BaCeO${}_3$ were prepared by a solid-state reaction method. BaCeO${}_3$ were calcined at 1300 ${}^{\circ}$C for 10 h in air and sintered at various temperatures. Phase formation analysis by X-ray diffraction technique (XRD) revealed that the samples exhibited a perovskite structure. The microstructural analysis indicated that grain size of the ceramics increased with sintering...
Mr
Chalermpol Rudradawong
(Department of Physics, Faculty of Science, King Mongkut's Institute of Technology Ladkrabang, Bangkok, THAILAND 10520)
21/05/2015, 13:00
Metal/semiconductor Mg$_2$Si compounds was synthesized by solid state reaction method. The sample was calcined at temperature 973 K in vacuum system. It was pressed into pellet, and then was sintered in hot-pressing process at 973 K. The Mg$_2$Si was studied structure properties by XRD and SEM, electrical properties by Hall Effect at room temperature and thermal properties by laser flash...
Mr
Wattana Tuichai
(Materials Science and Nanotechnology Program, Faculty of Science, Khon Kaen University, Khon Kaen, THAILAND 40002)
21/05/2015, 13:00
The influences of oxygen vacancies on the dielectric and electrical properties of Na${}_{1/2}$Bi${}_{1/2}$Cu${}_3$Ti${}_4$O${}_{12}$ ceramics prepared by a urea combustion method were investigated via annealing in oxidizing atmosphere. Interestingly, a single Na${}_{1/2}$Bi${}_{1/2}$Cu${}_3$Ti${}_4$O${}_{12}$ phase was successfully prepared using a low calcination temperature of 800...
Mr
Witoon Tangwatanakul
(Molecular Technology Research Unit, School of Science, Walailak University, Nakhon Si Thammarat, THAILAND 80161)
21/05/2015, 13:00
Synchrotron X-ray absorption spectroscopy (XAS) was used to complement X-ray
diffraction (XRD) in the characterization of iron oxide nanoparticles synthesized by the
ultrasonic-assisted co-precipitation. The influence of ultrasound was highlighted by XRD
showing impurity phases in the control synthesized without sonication. The hematite ($\alpha$-Fe${}_2$O${}_3$) phase was ruled out by XRD...
Ms
Jantree Kheanwong
(Department Department of Physics, Faculty of Science, Kasetsart University, Bangkok, THAILAND 10900)
21/05/2015, 13:00
Aluminum-doped ZnO (ZnO:Al) film was deposited by RF-sputtering on different substrates (glass, B-PTFE and W-PTFE). From SEM photographs, the thickness of sputtered ZnO:Al films was about 90 nm. XRD measurements confirms that sputtered ZnO:Al films show ZnO:Al phase in (002) direction. Peak intensity of ZnO:Al phase obviously depends on the type of substrate materials. The highest and lowest...
Ms
Pornsawan Kum-onsa
(Materials Science and Nanotechnology Program, Faculty of Science, Khon Kaen University, Khon Kaen, THAILAND 40002)
21/05/2015, 13:00
In this work, Ni nanoparticle/PVDF-($f$=0.2)Na${}_{1/3}$Bi${}_{1/3}$Ca${}_{1/3}$Cu${}_3$Ti${}_4$O${}_{12}$(Ni/PVDF-NBCCTO) three-phase polymeric nanocomposites with different Ni were fabricated by a liquid-phase assisted dispersion and hot pressing at 200 ${}^{\circ}$C for 0.5 h. The microstructure of the fabricated polymeric nanocomposites were characterized by a scanning electron microscope....
Songyoot Kaewmala
(Materials Science and Nanotechnology Program, Faculty of Science, Khon Kaen University, Khon Kaen, THAILAND 40002)
21/05/2015, 13:00
SnO${}_2$ material has attracted much attention due to its high theoretical capacity (790 mAh/g) compared to the current carbon- based anode (372 mAh/g). However, the SnO${}_2$ material exhibits a large volume expansion (up to 300 Vol. %) during charging and discharging, which causes crumbling and cracking of the electrode leading to large capacity loss and poor cycling stability. Creating...
Ms
Chutharat Paikaew
(Department of Physics, Faculty of Science, King Mongkut’s University of Technology Thonburi, Bangkok, THAILAND 10140)
21/05/2015, 13:00
In this research, Zn substituted Ca hydroxyapatite synthesized from waste chicken eggshells were prepared precipitation method. The structure properties and morphology were investigated by X-ray diffraction (XRD) Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). The results showed that the intensity of XRD pattern and crystallite size of hydroxyapatite...
Ms
Pornpanarat Ardchongthong
(Materials Science and Nanotechnology Program, Faculty of Science, Khon Kaen University, Khon Kaen, THAILAND 40002)
21/05/2015, 13:00
CsSnI${}_{1-x}$F${}_x$ doped ZnO were synthesized and used as the hole conducting in dye-sensitized solar cells (DSCs). The aim of this work is to study the effect of ZnO on the solid-stat DSC performances. CsSnI${}_3$ powders were prepared by heating a stoichiometric mixture of CsI (0.1 g) and SnI${}_2$ (0.07 g) at 450 ${}^{\circ}$C for 30 min in argon environment. CsSnI${}_{1-x}$F${}_x$...
Ms
Rattiya Hongtong
(Materials Science and Nanotechnology Program, Faculty of Science, Khon Kaen University, Khon Kaen, THAILAND 40002)
21/05/2015, 13:00
LiFePO${}_4$/Carbon composite fibers were synthesized by using a combination of electrospinning and sol-gel techniques with LiOH•H${}_2$O, FeSO${}_4$•7H${}_2$O, H${}_3$PO${}_4$ and citric acid. Polyvinylpyrrolidone (PVP: 1,300,000 g.mol${}^{−1}$) was used as the fiber-forming agent in the electrospinning method and a carbon source for improving electronic conductivity of LiFePO${}_4$. Surface...
Uraiwan Intatha
(School of Science, Mea Fah Luang University, Chiang Rai, Thailand 57100)
21/05/2015, 13:00
Porous ceramics are studied for natural extracts packaging application to control bee mites. Firstly, the amount of starting precursors such as cellulose (pore former) and PVP (surfactant) are varied to find the suitable preparing condition. The ratio of cellulose and PVP are affected by density and porosity of ceramic. The best ceramic condition is cellulose 10 g and PVP 3 cc with 90.54 %...
Mr
Aekgaran Sangmala
(Department of Physics, Faculty of Science, King Mongkut’s University of Technology Thonburi, Bangkok, THAILAND 10140)
21/05/2015, 13:00
Stabilized zirconia (ZrO${}_2$) added hydroxyapatites were synthesized from waste eggshells at different percent weigh from 1 to 15 with an increment 2 percent weight by precipitation method. The samples were dried at 100 ${}^{\circ}$C for 48 h, grounded with pestle and mortar into powder and heated from 200 to 1300 ${}^{\circ}$C. Structure properties of samples before and after heated were...
87.
Gamma-ray Shielding and Structural Properties of P${}_2$O${}_5$-BaO-Bi${}_2$O${}_3$ Glass System
Mr
Sarinthonthep Sainet
(Department of Physics, Faculty of Science, Ubon Ratchathani University, Ubon Ratchathani, THAILAND 34190)
21/05/2015, 13:00
Fabrication of a (50)P${}_2$O${}_5$ - (50-$x$)BaO - ($x$)Bi${}_2$O${}_3$ glass systems where $x$ = 0, 2.5, 7.5, 12.5 and 17.5 mol% was carried out using a conventional melt-quenching method. The glass system has been investigated to see its potential use as radiation shielding material. The glass density was measured by using Archimedes principle. The micro-hardness of glasses was determined...
Mr
Pariwat Saengvong
(Department of Physics, Faculty of Science, Khon Kaen University, Khon Kaen, THAILAND 40002)
21/05/2015, 13:00
The dielectric properties and electrical response of grain boundaries of Na${}_{1/3}$Ca${}_{1/3}$La${}_{1/3}$Cu${}_3$Ti${}_4$O${}_{12}$ ceramics were investigated as a function of frequency. High dielectric permittivity (${\varepsilon}^{\prime}\sim$10${}^4$) and low loss tangent (tan$\delta$<0.1 at 1 kHz) were observed in Na${}_{1/3}$Ca${}_{1/3}$La${}_{1/3}$Cu${}_3$Ti${}_4$O${}_{12}$ ceramics....
Mr
Apiwat Phetsahai
(Department of Physics, Faculty of Science, King Mongkut’s University of Technology Thonburi, Bangmod, Bangkok, THAILAND 10140)
21/05/2015, 13:00
An important step in fabrication of slider magnetic recording head is bonding of bars on a fixture using hot melt synthetic adhesive. For bar bonding of heat-assisted magnetic recording (HAMR) head, the fixture feature is different from a standard fixture yield to excessive bonding agent (EBA) on blade line. Therefore, the aim of this work is to reduce the quantity of EBA on blade line. The...
Mr
Priyavit Pattanakitkaset
(Faculty of Science, Chiang Mai University, Chiang Mai, THAILAND 50200)
21/05/2015, 13:00
In this work, mechanical properties of short rattan fiber (Calamus sp.7 of in San Pa Koi, Chiang Mai) approximately length 1.0 cm – Carbon Nanotube reinforced epoxy resin composites were investigated. Rattan fibers were treated in Sodium Hydroxide in different concentration and soaking time. To improve the ability of adhesion compare with non-soaked rattan fibers and destroy external surface,...
Ms
Pimpilai Wannasut
(Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai, THAILAND 50200)
21/05/2015, 13:00
This research studied the effect of LiSbO${}_3$ on microstructure and electrical properties of lead-free Bi${}_{0.5}$(Na${}_{0.80}$K${}_{0.20}$)${}_{0.5}$TiO${}_3$ ceramics with the composition belonging to Bi${}_{0.5}$(Na${}_{0.80}$K${}_{0.20}$)${}_{0.5}$TiO${}_3$-LiSbO${}_3$ or (1-$x$)BNKT-$x$LS(when $x$ = 0, 0.005, 0.010, 0.015, 0.020 mol fraction). The BNKT-LS ceramics were prepared by a...
Ms
Tatphicha Promfu
(Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand)
21/05/2015, 13:00
Astronomy, Astrophysics, and Cosmology
Oral presentation
Io magnetic footprint (IFP) is a result of interaction between Jovain magnetosphere and Io. Due to Jupiter’s fast rotation in comparison with Io, magnetospheric plasmas collide with atmospheric particles of Io at high speeds. Therefore the interaction region expands into an extended area behind Io. As a result, aurora spot is extended into a tail-like structure. This research study factors...
Mr
Jutapol Jumpatam
(Materials Science and Nanotechnology Program, Faculty of Science, Khon Kaen University, Khon Kaen, THAILAND 40002)
21/05/2015, 13:00
The influences of Sn doping concentration and CaTiO$_3$ volume fraction on microstructure and electrical response of Sn-doped CaCu$_3$Ti$_4$O$_{12}$/CaTiO$_3$ composites prepared from a nominal formula of Ca$_{1+x}$Cu$_{3-x}$Ti$_{4-y}$Sn${}_y$O${}_{12}$ (where $x$ = 0, 0.5, 1 and 1.5; $y$ = 0.05 and 0.30) were investigated. The dielectric properties of...
Ms
Kanyaphach Armart
(Department of Physics, Faculty of Science, Ubon Ratchathani University, Ubon Ratchathani, THAILAND 34190)
21/05/2015, 13:00
The study of thermoelectric material BiSbTe was prepared by Bridgman method with a growth rate 4 mm/hr. Structural investigation by using XRD technique. From the XRD pattern apparent peak at plane (1010) of BiSbTe and the orderly arrangement of unit cell. The longitudinal velocity was measured by ultrasonic method. Density was measured by Archimedes method (6.35 g/cm${}^3$). The longitudinal...
Ms
Arisara Panthawan
(Materials Science Research Center, Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai, THAILAND 50200)
21/05/2015, 13:00
A self-cleaning glass was prepared by a sparking process. Specimens were coated with titanium oxide thin films, and were annealed by heating at 500 ${}^{\circ}$C using a laser and a furnace heat treatments. A lifetime span of the samples was tested by a rainfall simulator. Effect of the laser heat treatment for 10 mins was compared with that of a furnace heat treatment for 60 mins. It was...
Mr
Suphagrid Wongprakarn
(Materials Science and Nanotechnology Program, Faculty of Science, Khon Kaen University, Khon Kaen, THAILAND 40002)
21/05/2015, 13:00
Metal binding energies of various metals such as Li, Be, B, Na, Al, Mg and Ca trapped on graphene and hydrogen adsorption energies corresponding to these metals are calculated by using the density functional theory. Our results reveal that Li, Be, Na, Al and Ca are trapped on the graphene with metal binding energies of about 3.49–3.87 eV. These binding energies are high enough to hold these...
Mrs
Pornsiri Wanarattikan
(Department of Physics, Faculty of Science, King Mongkut’s University of Technology Thonburi, Bangkok, THAILAND 10140)
21/05/2015, 13:00
In this work, the InGaAsN lattice-matched films were grown on off-angle Ge (001) substrates with inclined surfaces of 4$^{\circ}$ and 6$^{\circ}$ towards the [1 1 0] direction. All the samples were grown by metalorganic vapor phase epitaxy (MOVPE) using low temperature (550 $^{\circ}$C) GaAs buffer layer. To compare the InGaAsN film on on-axis Ge (001) substrate, micro-structural properties of...
Ms
Supunnee Srikeawnawan
(Department of Physics, Faculty of Science, Thaksin University Songkhla Campus, Songkhla, THAILAND 90000)
21/05/2015, 13:00
The microstructure and impedance properties of Sr${}_{0.4}$Ca${}_{0.6}$La${}_4$Ti${}_5$O${}_{17}$ ceramics were studied and determined. The ceramic was doped with 1, 2 and 3% mol of ZnO and prepared using mixed oxide method. It was sintered at the temperature of 1,400 ${}^{\circ}$C for 3 hours. The x-rays diffraction (XRD) technique and scanning electron microscope (SEM) were employed to exam...
Mrs
Chirapan Chaikawang
(Material Science and Nanotechnology Program, Faculty of Science, Khon Kaen University, Khon Khaen, THAILAND 40002)
21/05/2015, 13:00
Our research team has studied the potentials of producing nanostructured silicon and silica using rice husk as starting raw materials. We have developed several nanostructured silicon and silicon derivatives from agricultural wastes due to its large quantity, easy to process, and cheaper to be developed into nanomaterials with high economic value. Nano-silicon and its derivatives can be...
Mr
Sarawut Tontapha
(Materials Science and Nanotechnology Program, Faculty of Science, Khon Kaen University, Khon Kaen, THAILAND 40002)
21/05/2015, 13:00
New dye sensitizes from anthraquinone derivatives for application in dye–sensitized solar cells (DSSCs) were theoretical investigated. The ground and excited state properties of the dyes were studied by using density functional theory (DFT) at M06/6–311G(d,p) level and time–dependent DFT (TD–DFT) method at the same level, respectively. The introduction of the anthraquinone derivatives has been...
Mr
Sarawut Pongha
(Department of Physics, Faculty of Science, Khon Kaen University, Khon Kaen, THAILAND 40002)
21/05/2015, 13:00
Lithium metal phosphate olivine (LiMPO${}_4$; M= Fe, Mn, Co, Ni) have a great deal of attention as one of the promising cathode material for lithium ion batteries. To date, a considerable number of studies have enhanced the electrochemical behavior of LiFePO${}_4$ from being barely electrochemically active to having a full capacity at high rates. Based on the success of LiFePO${}_4$, an...
Ms
Porntipa Pooseekheaw
(Materials Science Research Center, Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai, THAILAND 50200)
21/05/2015, 13:00
Titanium dioxide (TiO${}_2$) is a widely used photocatalyst in water splitting process for hydrogen production. In this study, hydrogenation of the titanium dioxide thin films was investigated in order to examine the photocatalytic properties and to improve the performance for photoactivity. Titanium dioxide thin films were prepared by sparking method, then annealed at 500 ${}^{\circ}$C in...
Mr
Chalongwut Boonpratum
(Department of Physics, Faculty of Science, King Mongkut’s University of Technology Thonburi, Bangkok, THAILAND 10140)
21/05/2015, 13:00
In this research, chitosan/hydroxyapatite (HAp) composites were prepared using precipitation method. The calcium oxide from waste chicken eggshells as a calcium source was mixed with nitric acid. Chitosan of shrimp solution different percent weight from 1 -15 were added to phosphate solution. The both of the solution were mixed, stirred for 6 h, precipitate forming a chitosan/HAp composite and...
Ms
Kanokwan Nawaka
(Prince of Songkla University)
21/05/2015, 13:00
Electrospinning technique has been greatly interested to fabricate nanoscale fibers due to its ease of preparation and adjustment. In this project, the objective is to design and construct the electrospinning setup to replace the high cost and imported electrospinning apparatus. Poly (vinylidenefluoride hexafluoropropylene; P(VDF-HFP)) was used a model polymer to produce fibers to study the...
Ms
Juthamas Inthanont
(Department of Physics, Faculty of Science, King Mongkut’s University of Technology Thonburi, Bangkok, THAILAND 10140)
21/05/2015, 13:00
The aim of this research was synthesized biodiesel from palm oil using transesterification calcium oxide from various eggshells catalyst. The chicken, duck, ostrich, quail, and crocodile eggshells were heated at 1300 ${}^{\circ}$C for 4 h. The ratio of methanol, palm oil and calcium oxide from eggshell were 10 g, 3.0 ml and 0.8 g, respectively. The temperature of biodiesel synthesis was...
Mr
Noppadon Toongyai
(Department of Physics, Faculty of Science, Chulalongkorn University, Bangkok, THAILAND 10330)
21/05/2015, 13:00
The N related vibrational modes (N-RVMs) in high quality GaPN films (0 < N ≤ 5.4 at%) on GaP (001) substrates grown by metalorganic vapor phase epitaxy (MOVPE) have been investigated. This study used two sets of samples with different growth times of 5 min and 10 min. N contents, which were examined from high resolution X-ray diffraction (HRXRD) measurements, are 1.8 at%, 2.9 at% and 3.6 at%...
Mr
Direk Boonthum
(Plasma technology for agricultural applications research laboratory, School of Science, Walailak University, Nakhonsithammarat, THAILAND 80160)
21/05/2015, 13:00
The thermoelectric is a device that can generate electric energy from solar and waste thermal energies, and generate temperature gradient from electric energy for cooling applications. Recently, researchers are interested in the synthesis of thermoelectric material by microwave furnace. Because the performance of thermoelectric materials are increased by microwave assisted synthesis method...
Dr
Chat Pholnak
(Department of Physics, Faculty of Science, Thaksin University, Phatthalung, THAILAND 93210)
21/05/2015, 13:00
Spheroidal ZnO nanostructures were synthesized by ultrarapid sonochemistry using 0.1 M zinc nitrate (Zn(NO${}_3$)${}_2$) and 0.2 M sodium hydroxide (NaOH) aqueous solution. These chemical solutions were sonicated under ambient conditions without any template, surfactant, and chelating agents. Only 30 min was needed to complete the formation of highly crystallized nanospheroids. As-prepared ZnO...
Mr
Kunpot Mopoung
(Nanoscience and technology, Graduate school, Chulalongkorn University, Bangkok, THAILAND 10330)
21/05/2015, 13:00
We have investigated cubic GaN (c-GaN) layers on GaAs (001) substrates by using high resolution X-ray diffraction (HRXRD) to verify strain modification due to a use of the GaN/AlGaN multi-interface buffer layer. To examine lattice parameters and residual strain, both a symmetric (002) and an asymmetric (113) reflections were performed using 2θ-ω mode HRXRD for different types of c-GaN samples....
Ms
Kanyapak Silakaew
(Materials science and Nanotechnology Program, Faculty of Science, Khon Kaen University, Khon Kaen, THAILAND 40002)
21/05/2015, 13:00
In this research work, the BaTiO${}_3$/poly(vinylidene fluoride) (BT/PVDF) nanocomposites were prepared by a solution processing method using spherical BT nanoparticles (<100 nm) with different volume fractions ($f_{\text{BT}}$ = 0$-$0.4). The microstructure of the nanocomposites was characterized by scanning electron microscope. It was found that the strong agglomeration of BT nanoparticles...
Mr
Poonnaphob Sopapan
(Department of Physics, Faculty of Science, Ubon Ratchathani University, Ubon Ratchathani, THAILAND 34190)
21/05/2015, 13:00
The aim of this work was to study the structural and elastic properties of recycle silica gel glass (denoted as RSGG) using FTIR and ultrasonic technique. The 10CaO – xPbO – (90–x)silica gel glass system (where x = 20, 25, 30, 35, 40 and 45 mol.%) were prepared. In this work, the silica gel was acquired from silica gel degradation in our laboratory. Densities of glass samples with PbO content...
Ms
Pattaranipa Gunhakoon
(Department of Physics, Faculty of Science, Ubon Ratchathani University, Ubon Ratchathani, THAILAND 34190)
21/05/2015, 13:00
Preparation of the glass 6 samples in the system 10SrO – $x$PbO – $(90-x)$Silica gel where $x$ = 20, 25, 30, 35, 40 and 45 mol%. The principle of Archimedes was used to measure the density of the glass samples. The ultrasonic velocities of the glasses were determined at room temperature by using pulse echo technique. The velocity data of the glass system have been used to find the elastic...
Mrs
Phitsamai KAMONPHA
(Department of Physics, Faculty of Science, Ubon Ratchathani University, Ubon Ratchathani, THAILAND 34190)
21/05/2015, 13:00
Thermoelectric material is very important in the future, because the materials could be used as renewable energy. The PbTe group material prepared by hydrothermal preparation method was studied. Thermoelectric AgPb`${}_{18}$`SbTe`${}_{20}$` alloys were prepare by hydrothermal method at 180 ${}^{\circ}$C for 20 h from AgNO${}_3$, Pb(NO${}_3$)${}_2$, SbCl${}_3$ and TeO${}_2$ compounds and were...
Mr
Pitshaya Praigaew
(Department of Physics, Faculty of Science, Chulalongkorn University, Bangkok, THAILAND 10330)
21/05/2015, 13:00
This work presents a comparative study on the effect of substrate surface orientation on the growth of GaN by metalorganic vapor phase epitaxy (MOVPE). GaN films was successfully grown on both the (001)- and (110)-oriented GaAs. With compared to GaN on (001)-oriented GaAs, GaN on (110)-oriented GaAs showed a flat surface and a smooth interface. Root mean square roughness (RMS) measured by...
Mr
Atipong Bootchanont
(School of Physics, Institute of Science, and COE-NANOTEC-SUT on Advanced Functional Nanomaterials, Suranaree University of Technology, Nakhon Ratchasima, THAILAND 30000)
21/05/2015, 13:00
Generally, the medical treatment of osteoporosis was used orally by strontium-base medicine because of its stimulative effect on bone formation. In this work, Hydroxyapatite-based bone (HAp) doped by Sr was investigated for the global structure by X-ray diffraction technique and the local structure by Synchrotron X-ray Absorption Spectroscopy technique. The Sr L$_3$-edge X-ray Absorption...
Dr
Jutharatana Klinkaewnarong
(Program in Physics, Faculty of Science, Udon Thani Rajabhat University)
21/05/2015, 13:00
Nanoporous materials of Ca${}_{(10-x)}$Fe${}_x$(PO${}_4$)6(OH)${}_2$ (FeHAp, x = 0, 0.1, 0.2, and 0.3) were successfully synthesized by sol–gel method. To obtain FeHAp, the prepared precursors were calcined in air at 600, 700 and 800 oC for 2 h. The samples were characterized by X–ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and transmission electron microscope (TEM)...
Mr
Winai Thongpan
(Materials Science Research Center, Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai, THAILAND 50200)
21/05/2015, 13:00
Vanadium dioxide (VO${}_2$) has a great potential to be utilized as thermochromic glazing for improving the energy efficiency of buildings. The famous semiconductor-to-metal phase transition (SMT) property of VO${}_2$ shows the reversible optical properties when the temperature is above the critical point at 68 ${}^{\circ}$C. In this work, VO${}_2$ films were prepared by sparking method on...
Ms
sunisa buekeaw
(Materials Science and Nanotechnology Program, Faculty of Science, Khon Kaen University, Khonkaen, THAILAND 40002)
21/05/2015, 13:00
Tin oxide (SnO${}_2$) is one of the promising high capacity anode materials for next generation lithium ion batteries due to its ability to uptake a large amount of Li-ion. SnO${}_2$ can provide twice as high specific capacity as graphite electrode currently used in commercial Li-ion batteries today. Therefore, using SnO${}_2$ will reduce the amount of materials used to make the electrodes and...
Ms
Sawinee Ngernpimai
(Materials Science and Nanotechnology Program, Faculty of Science, Khon Kaen University, Khon Kaen, THAILAND 40002)
21/05/2015, 13:00
Gold nanorods show great potential in applications such as imaging, drug delivery, photothermal therapy and biosensing. The optoelectronic properties strongly depend on their sizes and shapes. In this work, gold nanorods with different aspect ratios are synthesized by a seed-mediated growth method. The gold seeds are prepared by the reduction of Gold (III) chloride trihydrate (HAuCl${}_4$)...
Phonlakit Khowjalern
(Department of Physics, Faculty of Science, King Mongkut's Institute of Technology Ladkrabang, Bangkok, THAILAND 10520)
21/05/2015, 13:00
In this work, magnesium silicide (Mg${}_2$Si) compounds were prepared by solid state reaction with sintering in quartz tube vacuum. Ball milling process is used in the mixture of magnesium (Mg) powder and pure silica obtained from thermal decomposition of rice husks. After that, the powder sample were sintered at 650$^{\circ}$C for 60, 120 and 180 minutes in quartz tube vacuum with argon...
Mr
Phonlakit Khowjalern
(Department of Physics, Faculty of Science, King Mongkut's Institute of Technology Ladkrabang, Chalongkrung Rd., Ladgrabang, Bangkok 10520, Thailand)
21/05/2015, 13:00
Magnesium silicide (Mg${}_2$Si) is a promising for thermoelectric materials due to display a high performance for thermoelectric power generation with ZT about 0.9 at operation temperature 600 to 800 K. This work, Mg${}_2$Si compound was prepared from starting powder of SiO${}_2$, which was attracted from rice husk, and Mg powder. The sintering process was performed in quartz tube vacuum at...
Ms
Chutirat Taddee
(Materials Science and Nanotechnology Program, Faculty of Science, Khon Kaen University, Khon Kaen, THAILAND 40002)
21/05/2015, 13:00
Delafossite CuCr${}_{1-x}$Fe${}_x$O${}_2$ (0.0 ≤ $x$ ≤ 0.15) semiconductors were synthesized by self-combustion urea nitrate process. The effects of Fe concentration on microstructural, optical and magnetic properties were investigated. X-ray diffraction (XRD) analysis results reveal the delafossite structure of all the samples. The lattice spacing of CuCr${}_{1-x}$Fe${}_x$O${}_2$ increased...
Ms
Lalita Tawee
(Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai, THAILAND 50200)
21/05/2015, 13:00
In this research, The $(1-x)$BaZr${}_{0.25}$Ti${}_{0.75}$O${}_3$-$x$Sr Fe${}_{0.5}$Nb${}_{0.5}$O${}_3$ ($(1-x)$ BZT+ $x$ SFN) with 0 ≥$x$ ≥0.9 ($x$ = 0.0$-$0.9) mol% were prepare by solid-state method. The powder were calcined at 1250 ${}^{\circ}$C for 3 h and 1300 ${}^{\circ}$C various dwell times ( 3, 6, and 12 h) and then sintered at 1450 ${}^{\circ}$C for 4 h. Effect of calcination...
Mr
ADULPHAN PIMSAWAT
(Department of Physics, Faculty of Science, Khon Kaen University, Khon Kaen, THAILAND 40002)
21/05/2015, 13:00
A NiO film was prepared by heating solution made of nickel acetate dissolved in acetic acid which were drop-casted on a fluorine-doped tin oxide (FTO) substrate. This simple preparation technique has rarely been investigated in the open literatures. The effect of heating temperatures from 250 ${}^{\circ}$C to 500 ${}^{\circ}$C on structural, morphological, electrical and capacitive properties...
Mr
Raewat Laopaiboon
(Department of Physics, Faculty of Science, Ubon Ratchatani University, Ubon Ratchatani, THAILAND 34190)
21/05/2015, 13:00
The glass system of $x$CaO - (50-$x$)SrO – 50B${}_2$O${}_3$ ($x$ = 0, 10, 20, 30, 40 and 50 wt.%) were prepared using the conventional melt quenching technique. In this work, the calcium oxide was acquired from Cassava Rhizome. Elastic properties of the glasses were determined at room temperature by measuring ultrasonic velocities (both longitudinal and transverse) at a frequency of 4 MHz. The...
Mr
Yutthachai Jaichueai
(Department of Physics, Faculty of Science, Ubon Ratchathani University, Ubon Ratchathani, THAILAND 34190)
21/05/2015, 13:00
The purpose of this work was to study the elastic and structural properties of recycle window glass thermoluminescent dosimeter using ultrasonic technique and FTIR spectroscopy. The thermoluminescent glass system 90RWG – 10Na${}_2$O – $x$Cu${}_2$O (where $x$ = 0.001, 0.01, 0.1 and 1.0 mol %) were prepared using the melt quenching technique consisting of 5 hr of 1250${}^{\circ}$C melting and 2...
Ms
Thanaporn Thumsa-ard
(85 Sathonlamark Road, Warin Chamrap, Department of Physics, Faculty of Science, Ubon Ratchathani University, Ubon Ratchathani 34190,Thailand)
21/05/2015, 13:00
The present reports the preparation of ZnO doped commercial Thai transparent window glass provided by Gardian Industries Corp. (denoted as WG). The effects of variable concentration of ZnO on thermoluminescence (TL) behavior are studied . The sample were prepared by using the melt quenching technique. The glasses were cut into transparent chips and exposed to X-ray. Trapping parameters are...
Mr
Chalermwong Dokpratoom
(Department of Physics, Faculty of Science, Mahasarakham University, Mahasarakham, THAILAND 44150)
21/05/2015, 13:00
With its unique electrical and optical characteristics, triglycinesulphate(TGS) has been studied extensively. However, the solution of glycine and sulfuric acid has the low evaporation rate, and hence, the long period is required to grow large TGS crystals. The main objective of this research is to investigate the potential of the electric-current stimulation to reduce the growth period of TGS...
Ms
Wipakorn Rittisut
(Department of Physics, Faculty of Science, Ubon Ratchathani University, Ubon Ratchathani, THAILAND 34190)
21/05/2015, 13:00
This research aims to study the cassava biomass fuel pellets prepared by cold compressed techniques with high pressure. Cassava chips were ground and sieved in the grain size of 150-300, 300-2000 and >2000 μm and are compressed with 8, 10, 12, 14 and 16 tons/cm${}^2$. The dimension of cassava fuel pellets is 4 cm in diameter and 1.5 cm in thickness. The results show that the heat of cassava...
Mr
Champ Suksawat
(Department of Physics, Faculty of Science, Khon Kaen University, Khon Kaen, THAILAND 40002)
21/05/2015, 13:00
When a magnetized magnet is subjected to a temperature gradient, the difference types of electron spin are separated at both ends of sample. This phenomenon is called spin Seebeck effect (SSE). The tool for observing the SSE involves an inverse spin Hall effect (a conversion of spin current to charge current) by attaching a platinum stripe on the magnetic material. In this study, we observed...
Ms
Pratthana Intawin
(Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai, THAILAND 50200)
21/05/2015, 13:00
Five different compositions of the system P${}_2$O${}_5$-CaO-Na${}_2$O containing 0, 10, 20, 30 and 40 mol% of Ba${}_{0.6}$Sr${}_{0.4}$TiO${}_3$ were prepared by the melt quenching method. The effects of composition on their thermal properties and dielectric properties were evaluated and discussed. The glasses were evaluated for glass transition temperature (Tg) and dielectric constant...
Ms
Ladavan Kaewphaisan
(Materials Science and Nanotechnology Program, Faculty of Science, Khon Kaen University, Khon Kaen, THAILAND 40002)
21/05/2015, 13:00
WS${}_2$ nanoparticles and multiwalled carbon nanotubes (MWNTs) were hydrothermally prepared and used as a counter electrode (CE) for dye-sensitized solar cells (DSSCs). The highest energy conversion efficiency of 6.69 % was achieved from the produced WS${}_2$/MWNT CE, closely comparable to that of the Pt CE which was 7.34 %, whereas the pure MWNT based DSSC gave the efficiency of 5.2 %. The...
Dr
Suwicha Wannawichian
(Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand)
21/05/2015, 13:15
Astronomy, Astrophysics, and Cosmology
Oral presentation
FUV images of Jupiter’s auroral region have been taken since the early observational era of the Hubble Space Telescope (HST). In the vicinity of the main auroral oval, an emission spot was detected and appeared to be evidence of electromagnetic interaction between Jupiter’s magnetospheric plasma and Io’s atmosphere. In previous works, the brightness of this emission, which is called Io’s...
O.H. Chin
(Plasma Technology Research Centre, Physics Department, University of Malaya 50603 Kuala Lumpur, Malaysia)
21/05/2015, 13:30
Metal nanoparticles (NPs) due to their size and shape, have unique attributes that differ from their macrosized counterparts. These attributes contributed to an ever-growing list of applications, from medicine to electronics. The challenge is not only to create the nanoscale sizes but also to keep the metal NPs dispersed without agglomeration. Conventional methods to synthesize the NPs include...
Prof.
Eric Mazur
(Harvard University)
21/05/2015, 13:30
Oral presentation
Dr
Alejandro Sáiz
(Department of Physics, Faculty of Science, Mahidol University, Bangkok 10400 Thailand)
21/05/2015, 13:30
Astronomy, Astrophysics, and Cosmology
Oral presentation
The Princess Sirindhorn Neutron Monitor (PSNM) has operated since late
2007 at the summit of Doi Inthanon, Thailand's highest mountain, in
Chiang Mai province. PSNM records the flux of galactic cosmic rays
(GCRs) impinging on Earth's atmosphere, as well as the GCR flux
variations with time due to solar activity. PSNM has the world's
highest cosmic ray vertical cutoff rigidity...
Dr
Pierre-Simon Mangeard
(National Astronomical Research Institute of Thailand, Chiang Mai 50200, Thailand)
21/05/2015, 13:45
Astronomy, Astrophysics, and Cosmology
Oral presentation
Neutron monitors (NMs) are large ground-based instruments for precise time tracking of the variations in the Galactic cosmic ray (GCR) flux at GeV-range. NMs are counting the secondary particles (mostly neutrons) issued from the interaction of the cosmic rays in the atmosphere. The sensitivity to GCR variations depends on the geomagnetic cutoff at the location of measurement. Since late 2007,...
Prof.
Deepak Prasad Subedi
(Department of Natural Sciences, School of Science, Kathmandu University, Dhulikhel, Nepal)
21/05/2015, 14:00
A dielectric barrier discharge (DBD) type ozone generator was designed with oxygen /air as a feed gas. The discharge was generated by using high voltage power supply operating at line frequency (50Hz). The effect of gas flow rate and applied voltage on the concentration of the ozone was investigated. The flow rate was varied from 1 lit/min to 5 lit/ min for electrode area A=143.56 cm${}^2$ and...
Dr
Warit Mitthumsiri
(Department of Physics, Faculty of Science, Mahidol University, Bangkok 10400 Thailand)
21/05/2015, 14:00
Astronomy, Astrophysics, and Cosmology
Oral presentation
Ionizing radiation in the Earth’s troposphere is mainly due to Galactic cosmic rays, high-energy particles from outside the Solar System. Typical solar energetic particles do not have enough energy to penetrate to aircraft or cloud altitudes. However, occasionally solar storms can produce relativistic ions with such enormous intensity that their ionization effect in the Earth’s lower...
118.
Overcoming the Seeing Limitations at 2.4-m Thai National Telescope with Lucky Imaging Technique
Rattanawadee Tekavong
(Department of Physics, Faculty of Science, King Mongkut's University of Technology Thonburi, Bangkok, Thailand 10140)
21/05/2015, 14:15
Astronomy, Astrophysics, and Cosmology
Oral presentation
Resolving power of large telescopes is limited by seeing condition, the blurring due to the Earth's atmospheric turbulence. This limits the capability of large telescopes, including the 2.4-m diameter Thai National Observatory (TNO) in Chiang Mai, Thailand, from reaching its fullest resolving power. We present an effort to overcome this limitation through the ‘Lucky Imaging' technique, which...
Dr
Tiberiu Harko
(Department of Mathematics, University College London, Gower Street, London WC1E 6BT, United Kingdom)
21/05/2015, 14:30
Astronomy, Astrophysics, and Cosmology
Oral presentation
We consider the possibility that the dark matter, which is required to explain the dynamics of the neutral hydrogen clouds at large distances from the galactic center, could be in the form of a Bose-Einstein condensate. To study the condensate we use the non-relativistic Gross-Pitaevskii equation. By introducing the Madelung representation of the wave function, we formulate the dynamics of the...
Prof.
Prasanta Chatterjee
(Department of Mathematics, Siksha Bhavana, Visva Bharati University, Santiniketan-731235, Birbhum, India)
21/05/2015, 14:30
Solitonic, periodic and chaotic behaviors of ion acoustic waves in an unmagnetized plasma
with q-nonextensive electrons and positrons are investigated applying the bifurcation theory
of planar dynamical systems. Model equations are transformed to a planar dynamical system
using a traveling wave transformation. Then by using the bifurcations of phase portraits of
this planar dynamical...
Ms
Tipwimol Traikool
(Thammasat University)
21/05/2015, 14:45
Effects of atmospheric plasma treatment on RD31 rice seed germination are studied. The seeds are treated with 5 mW of plasma for 10 sec. It is found that plasma treatments have positive effects on seed germination and seeding growth at the early stage. The germination rate is found to improve by 25% compared to non-treated seeds. In addition, the better quality of sprouts is obtained. It is...
Dr
Matthew Lake
(The Institute for Fundamental Study, Naresuan University, Phitsanulok 65000, Thailand)
21/05/2015, 14:45
Astronomy, Astrophysics, and Cosmology
Oral presentation
We outline a model of abelian-Higgs strings with variable scalar and vector core radii.
In general, the functions determining the time and position-dependent core widths may be
expressed as arbitrary left or right movers, of which the usual constant values are a particular solution. In this case the string may carry momentum, even if the embedding of its central axis remains fixed, and the...
Mr
Arlee Tamman
(School of Science, Walailak University, Nakhon Si Thammarat 80161, THAILAND)
21/05/2015, 15:00
PET scan is a medical imaging device for effective cancer diagnosis. It use medical radioisotopes such as 18-F. Since 18-F has short half-life, on site production is inevitable. Normally, cyclotron is used in the big hospital to produce 18-F. Plasma focus, a much cheaper and compact system, is an alternative device for 18-F production. The plasma focus can generate energetic particles which...
Wirin Sonsrettee
(Faculty of Engineering and Technology, Panyapiwat Institute of Management, Nonthaburi 11120, Thailand)
21/05/2015, 15:00
Astronomy, Astrophysics, and Cosmology
Oral presentation
Most of the field line random walk (FLRW) theories proposed in the past were strongly influenced by studies of the limit of weak fluctuations. In this limit, the behavior of the FLRW can be characterized by the Kubo number $R=(b/B_0)(\ell_\parallel/\ell_\perp)$, where $b$ is the root mean squared fluctuation, $\ell_\parallel$ and $\ell_\perp$ are turbulence coherence scales parallel and...
Abhay Nayak
(St. Stephens College, University of Delhi, Delhi-110007, INDIA),
Shyama Rath
(Department of Physics and Astrophysics, University of Delhi, Delhi-110007, INDIA)
21/05/2015, 15:15
This talk is aimed at presenting an overview of Si radiation detectors. and how different types of radiation influence the short and long term electronic properties and detector performance. The scope of this work is under a Co-ordinated Research Project entitled “ Utilization of ion accelerators for studying and modelling of radiation induced defects in semiconductors and insulators” funded...
Dr
Thiansin Liamsuwan
(Thailand Institute of Nuclear Technology (Public Organization), Ongkharak, Nakorn Nayok 26120, Thailand)
21/05/2015, 15:45
Reliable knowledge of the neutron energy spectrum is valuable for determination of neutron dose equivalent for radiation protection purposes. The reasons are twofold: First, neutron dose equivalent depends strongly on the neutron energy spectrum and, second, most of neutron measuring devices are highly energy dependent. Recently, we have developed a neutron spectrometer for measurement of...
Ms
Muharani Asnal
(School of Manufacturing Systems and Mechanical Engineering, Sirindhorn International Institute of Technology, Thammasat University, Pathum Thani, THAILAND 12121)
21/05/2015, 16:00
Particle and Heavy Ions Transport code System (PHITS) is used to simulate capability to produce an epithermal neutron flux for BNCT of various beam shaping assembly (BSA) designs. It is assumed in this work that all designs of BSA considered is a cylindrical geometry. It is found that by adopting the flux of 14.1 MeV neutrons from a D-T neutron generator, the design that yields an optimum...
Prof.
Jafar Sadeghi
(Department of Physics, Ayatollah Amoli Branch, Islamic Azad University, Amol, Iran)
High Energy and Particle Physics
Oral presentation
We use a metric with hyperscaling violation and study form factor of QCD. We find the effects of hyperscaling violation on the form factor and obtain the dependence of the form factor on momentum numerically. Here by using the hyperscaling violation metric we do not need hard-wall and soft-wall models.
Mr
Phongnared Boontueng
(Department of Physics, Faculty of Science, Ubon Ratchathani University, Ubon Ratchathani, THAILAND 34190)
Condensed Matter Physics
Poster presentation
We study feasible of ethanol absorbed on pristine and impurity P-doped on armchair single walled carbon nanotubes(SWCNTs) by first principle based on DFT. Van der Waals corrected and spin polarized density functional theory calculations using plane wave approach with periodic boundary conditions were carried out to investigate the intermolecular interaction. The interaction between absorbate...
Ms
Kittiya KOSAENTOR
(Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai, THAILAND 50200)
Accelerators and Synchrotron Radiations
Poster presentation
Transverse emittance is one of the important properties of charged particle beams, which indicates a beam transverse size and its convergent and divergent features. This research focuses on emittance measurements of electron beams that are generated from a 1.6 S-band thermionic cathode RF-gun at the Plasma and Beam Physics Research Facility, Chiang Mai University. Dynamic simulations of...
