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09/09/2020, 15:45Poster
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Gálisová L.galisova.lucia@gmail.com (Institute of Manufacturing Management, Faculty of Manufacturing Technologies with the seat in Prešov, Technical University of Košice)09/09/2020, 15:50Poster
The present work deals with the exactly solvable spin-1/2 Ising-Heisenberg model on an
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infinite but regular two-dimensional lattice composed of identical inter-connected bipyramidal
plaquettes with the aim to clarify a bipartite entanglement between the Heisenberg spins at
zero as well as finite temperatures. The quantity called concurrence is used as an indicator for
determining a... -
Tóthová J. (Department of Physics, Faculty of Electrical Engineering and Informatics, Technical University of Košice)09/09/2020, 15:50Poster
The Brownian motion of a particle in a bath of other particles is effectively described by the
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generalized Langevin equation (GLE). Following Kubo, it is usually assumed that if external
forces act on the system, they do not affect the thermal force and the memory function that
enter the GLE. The action of such forces is restricted to the Brownian particle (BP), leaving
the bath particles... -
Lisý V. (Department of Physics, Faculty of Electrical Engineering and Informatics, Technical University of Košice)09/09/2020, 15:50Poster
The Brownian motion of a particle immersed in a bath of charged particles is considered when
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the system is placed in a magnetic field. The widely accepted Caldeira-Legget particle-bath
model is modified so that not only the charged Brownian particle (BP) but also the bath
particles respond to the external field. For stationary systems, two equations for the BP
motion across the field are... -
Kamarád J. (Institute of Physics ASCR, Prague)09/09/2020, 15:50Poster
The Heusler Ni 2 Mn 1+x Sn 1-x alloys exhibit structural martensitic transformation from cubic
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(austenite) into orthorhombic (martensite) phase in a narrow composition range, 0,4 ≤ x ≤ 0,6,
only. The transformation is accompanied by a significant changes of volume, magnetization
and by large anomalies in transport properties. We have studied forced volume magneto-
striction, Joulian... -
Snětinová M. (Katedra didaktiky fyziky MFF UK, Praha)09/09/2020, 15:50Poster
Sbírka řešených úloh z fyziky a Sbírka fyzikálních pokusů vznikají na Katedře didaktiky
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fyziky MFF UK. Jedná se o podpůrné materiály pro studenty a učitele základních, středních
i vysokých škol.
Sbírka řešených úloh z fyziky je vyvíjena již 14 let a obsahuje přes 900 úloh v češtině. Je
primárně určena vysokoškolským studentům a žákům středních škol, lze v ní ale nalézt
i úlohy na úrovni... -
Miglierini M. ( Institute of Nuclear and Physical Engineering, Slovak University of Technology in Bratislava)09/09/2020, 15:50Poster
Metallic glasses are still attracting the interest of researchers namely for their very good soft
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magnetic properties. With the aim to enhance their practical applications, new compositions
are continuously scrutinized. Here, we present Mössbauer spectrometry study of a novel
Fe 51 Co 12 Si 16 B 8 Mo 5 P 8 metallic glass prepared in a form of ribbons by conventional method of
planar flow... -
75. NEW VIEW ON THE ORIGIN OF HIGH CONDUCTIVITY OF POLYANILINE FILMS PROTONATED BY HYDROCHLORIC ACIDRutsch R. (Department of Macromolecular Physics, Faculty of Mathematics and Physics, Charles University, Prague)09/09/2020, 15:50Poster
Polyaniline (PANI) is a material known for its high conductivity and also huge range of
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obtainable conductivities. In general, three types of charge carriers are considered in PANI
salt, namely holes, polarons and protons. Many authors attribute the high conductivity of acid
doped PANI to polarons [1-3]. We show that conductivity of polarons might not be
necessarily the prevailing... -
Tarjányi N. (Department of Physics, Faculty of Electrical Engineering and Information Technology, University of Žilina)09/09/2020, 15:50Poster
If we put a several tens of microns thin sample of nematic liquid crystal with planar alignment
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of molecules with respect to the LC cell surface in between two crossed plane polarizers,
illuminate it by white light and rotate appropriately, then using a fiber optic spectrometer we
can observe a quasi-periodic spectral distribution of intensity of light behind the output
polarizer. The... -
Kadlec F. (Institute of Physics, Academy of Sciences of the Czech Republic, Prague)09/09/2020, 15:50Poster
Lawsonite [CaAl2Si2O7(OH)2·H2O] is an uncommon mineral found in metamorphic rocks,
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occurring at subduction zones, supposedly at depths of up to 250 km. It contains 11.5 wt%
water in its crystal structure. At room temperature, it is orthorhombic, crystallizing in the
Cmcm space group. Its structure contains a silicate tetrahedra framework with four formulas
in the unit cell. Each chemical... -
Šmídová N. (Department of Physics, Faculty of Electrical Engineering and Informatics, Technical University of Košice)09/09/2020, 15:50Poster
Thermoplastic starch, a group of starch-based materials, has often been under review because
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it can be used as low-cost bioplastics. Native starch is usually processed under the action of
high temperature and shear stress with addition of plasticizers such as low molecular weight
polyols and/or amide-containing molecules to obtain a moldable thermoplastic material. Such
materials are... -
Hockicko P. (Katedra fyziky, Fakulta elektrotechniky a informačných technológií, Žilinská univerzita v Žiline)09/09/2020, 15:50Poster
STEM vzdelávanie zamerané na Science, Technology, Engineering a Mathematics zahŕňa
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v sebe prípravu vysokoškolsky vzdelaného absolventa technickej univerzity, ktorý v priebehu
prípravy získal zručnosti zo všetkých spomínaných oblastí. Podľa Bloomovej taxonómie
poznávacích cieľov takéto vzdelávanie je realizované na vyšších stupňoch, ako je analýza,
aplikácia a hodnotiace posúdenie.... -
Těšínská E. (Ústav pro soudobé dějiny AV ČR Praha)09/09/2020, 15:50Poster
V lednu 1956 bylo Československo přizváno k účasti na založení ústavu pro jaderný, který
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měl být obdobou Laboratoře Evropské organizace pro jaderný výzkum (CERN) v Ženevě pro
země tzv. lidové demokracie. Československé stranické a vládní orgány nabídku přijaly.
Na konferenci o ústavu, která se konala ve dnech 20.–26. března 1956 v Moskvě, byla
československou vládou vyslána sedmičlenná... -
Svoboda J. (Ústav fyziky plazmatu AV ČR, Praha)09/09/2020, 16:20Poster
Tokamak COMPASS je vybaven dvěma sadami diagnostik, které jsou rutině využívány
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k počítání tomografických inverzí. Jedná se o polovodičové diody, které slouží buď jako
bolometry (měří celkový vyzářený výkon), nebo jsou vybaveny beryliovým filtrem a měří
měkké rentgenové záření.
V důsledku omezení pozorovacích úhlů je tomografická inverze na tokamacích nedostatečně
určená, a proto se... -
Hovančík D. (Faculty of Mathematics and Physics, Charles University, Prague)09/09/2020, 16:20Poster
The uranium based intermetallics are intensively studied because of dual character of uranium
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5f electrons. Unique coexistence of ferromagnetism and superconductivity has been revealed
in URhGe and UCoGe crystalizing in the orthorhombic TiNiSi-type structure. Since UCoGe
(T C =2.5 K) is very close to magnetic instability, it is a candidate to observe vanishing of
ferromagnetic order and... -
Santolík O. (Department of Space Physics, Institute of Atmospheric Physics of the Czech Academy of Sciences)09/09/2020, 16:20Poster
Dust grains in the Martial dust storms or dust devils may be electrically charged by
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triboelectric effects and laboratory experiments show that under specific conditions electric
discharges might occur in the dusty Martian atmosphere. Remote measurements from the
Earth using a 34-m Deep Space Network antenna have shown a non-thermal component of
electromagnetic radiation from Mars which... -
Černý M. (Department of chemical physics and optics, Faculty of Mathematics and Physics, Charles University, Prague)09/09/2020, 16:20Poster
Atomic Force Microscopy (AFM) is a powerful imaging technique which provides very high-resolution images and topological data in scales of nanometers. The quality of the obtained data is determined by quality of used AFM tip and fine adjustment of measuring parameters and settings of the machine. The measurement becomes more challenging if the AFM probe is about to approach a soft and elastic...
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Češka J. (FJFI, České Vysoké Učení Technické v Praze)09/09/2020, 16:20Poster
Kvarkonia jsou dúležitou sondou k vyšetřování vlastností kvark-gluonového plasmatu.
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Proton-protonové srážky jsou nezbytným prostředkem k ustanovení základních vlastností,
které slouží ke studiu kvarkonií v proton-jaderných a jádro-jaderných srážek. Tento poster
prezentuje základní charakteristiky Upsilon mezonů zjištěné pomocí Monte Carlo generátorů
v proton-protonových srážkách při √ sNN... -
Cieslar M. (Charles University, Faculty of Mathematics and Physics)09/09/2020, 16:20Poster
Al-Li based alloys of AA2195 type are designed mainly for aerospace applications. They
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exhibit a very high strength due to a presence of strengthening precipitates of a nanometric
size. However, materials prepared by a conventional direct-chill casting and following rolling
exhibit strong crystallographic texture and inhomogeneous mechanical properties. This
inconvenient behavior could be... -
Kolmašová I. (Department of Space Physics, Institute of Atmospheric Physics of the Czech Academy of Sciences)09/09/2020, 16:20Poster
The Waves instrument onboard the Juno spacecraft recorded numerous cases of dispersed
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electromagnetic waves generated by Jovian lightning. These waves, also known as whistlers,
propagated through ionospheric and magnetospheric plasmas before their detection by Juno
during its close approaches to Jupiter. We present observations of nearly five thousand low-
dispersion lightning whistlers... -
Hubáček T. (Institute of Physics CAS, v.v.i., Prague)09/09/2020, 16:20Poster
Nitride semiconductors became the second most important semiconductor material after
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silicon in the last two decades. Many daily used devices, such as blue light emitting diodes or
high electron mobility transistors in electronic devices, are based on nitride semiconductors.
Despite the nitride devices mass production, there are many open questions and not well
understood phenomena which... -
Janek M. (Physics Department, University of Zilina)09/09/2020, 16:20Poster
One of the approaches to investigate the equation-of-state of dense nuclear matter is the study
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of the short-range correlations of nucleons in nuclei. Short-range correlations have densities
comparable to the density in the center of a nucleon and they can be considered as the drops
of cold dense nuclear matter. Dp elastic and dp breakup processes are investigated at Internal
Target... -
Holý V. (Department of Condensed Matter Physics, Charles University, Prague)09/09/2020, 16:20Poster
Nanoparticles of hexagonal phase in bcc-Ti(Mo) single crystals ( phase) occur due to a
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diffusionless athermal to transformation and they grow during follow-up ageing at
elevated temperatures, while the alloying atoms (Mo in our case) are expelled from the
nanoparticle volumes. We used anomalous x-ray diffraction for the study of local chemical
composition of growing particles and... -
Holub M. (Institute of Physics, Faculty of Science, P.J. Šafárik University)09/09/2020, 16:20Poster
The idea of controlling the magnetic ground state of a spin-1 one-dimensional
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antiferromagnetic (1d AFM) quantum magnets has long been of interest to physicists. In the
study of anisotropic 1d AFM systems based on Ni 2+ compounds, a series of topologically
protected quantum phases was observed, one of these phases is the topologically protected
Haldane phase [1, 2]. The magnetic ground... -
Vinnik O. (Institute of Physics, P. J. Šafárik University, Košice)09/09/2020, 16:20Poster
Current work is focused on the lattice subsystem of Cu(en)Cl 2 , Cu(tn)Cl 2 and
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Cu(en)(H 2 O) 2 SO 4 (en = C 2 H 8 N 2 , tn = C 3 H 10 N 2 ), quasi-two-dimensional quantum magnets with
one-dimensional polymeric structure. Magnetic layers were described within spin = 1/2
Heisenberg models on the rectangular and zig-zag-square lattice with nearest-neighbor
couplings J 1 > J 2 . The... -
Bajtošová L. (Charles University, Faculty of Mathematics and Physics)09/09/2020, 16:50Poster
Small-scale thin films are frequently used in microelectronic devices and micro-electro-
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mechanical systems where they are commonly subjected to high strains during their dynamic
motion. However, mechanical behavior of thin films significantly differs from the behavior
observed in bulk materials. To understand the size dependent properties of deformation
mechanisms, characterization of the... -
Gecasek D.09/09/2020, 16:50Poster
Cosmic rays are particles, coming from space. The system COR (Cut-off rigidity) provides
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access for the wider scientific community to models of simulation of cosmic ray trajectories
in the magnetosphere via a web interface. The system offers simulations of vertical directions
or, from multiple nonvertical directions covering half sphere (2Pi solid angle) with the center
of the sphere in... -
Macusova E.09/09/2020, 16:50Poster
Runaway electrons (RE) present one of the major concerns for future fusion devices
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(tokamaks), since the uncontrolled localized RE losses can compromise the integrity
of tokamak device and its further operation. Runaway electrons can emerge within a
tokamak plasma either at low density, during the discharge start-up phase or as a result of
rapid plasma termination, associated with sudden... -
Minar J.09/09/2020, 16:50Poster
Angle-resolved photoemission spectroscopy (ARPES) is a leading experimental probe for
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studying the electronic structure and complex phenomena in quantum materials. Modern
experimental arrangements consisting of new photon sources, analyzers and detectors supply
not only spin resolution but also extremely high angle and energy resolution [1]. Furthermore,
the use of photon energies from few... -
Křivská B. (Charles University, Faculty of Mathematics and Physics)09/09/2020, 16:50Poster
Bonding of aluminium and steel into one single material – an aluminium-steel clad –
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represents an excellent composite material, which provides high potential for applications in
automobile industry by combination of properties of respective materials – high stiffness and
strength of steel and durability, corrosion resistance, thermal capacity and high specific
strength of aluminium.... -
Křivská B.09/09/2020, 16:50Poster
Bonding of aluminium and steel into one single material – an aluminium-steel clad –
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represents an excellent composite material, which provides high potential for applications in
automobile industry by combination of properties of respective materials – high stiffness and
strength of steel and durability, corrosion resistance, thermal capacity and high specific
strength of aluminium.... -
Paulovičová K.09/09/2020, 16:50Poster
Magnetic fluids belong to special nanomaterials with many application possibilities. One of
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the fields of their use is the energy industry, where the demands on the performance of
electrical equipment are constantly rising. As a result, there is a need to use modern
insulation systems. Adding nanoparticles to conventional media could be one way to obtain
them. In this study, we focused on... -
Králík R. (Charles University, Faculty of Mathematics and Physics)09/09/2020, 16:50Poster
Twin-roll casting of AA8079 aluminum sheets creates non-equilibrium structure as a result of
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high solidification rates. Homogenization treatments consisting of an exposure of the as-cast
material to high temperatures close to the melting point result in a redistribution of solute
atoms and a formation of a more stable structure. Newly formed equilibrium particles have
different... -
Vrláková J.09/09/2020, 16:50Poster
Emission of relativistic particles produced in central nuclear collisions in emulsion detector
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has been studied for different beam energies and primary nucleus - 16 O, 20 Ne, 28 Si, 32 S, 197 Au
and 208 Pb. A preliminary study of multiplicity and target dependence of particles fluctuations
on pseudorapidity distribution in terms of the quantity has been made. Search for... -
Michajlenko V.09/09/2020, 16:50Poster
Cosmic rays propagate the heliosphere from interstellar space till orbit of planets and Sun.
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The problem of their distribution, described by Fokker-Planck equation is solved by a couple
of methods, one of the most used is the stochastic method based on Ito lemma.
Presented work is focused on the estimation of statistical error of Fokker – Planck equation
solution of the 1D forward... -
Kravcakova A.09/09/2020, 16:50Poster
The substuctures in the emission of relativistic particles in central 197 Au and 208 Pb interactions
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with Ag, Br targets in nuclear emulsions at beam momenta 11.6 and 158 A GeV/c,
respectively, have been investigated. The nonstatistical ring-like substructures of produced
particles in azimuthal plane of a collision as result of hydrodynamic waves in nuclear matter
have been searched and... -
Peterka M.09/09/2020, 16:50Poster
Provoz v režimu s vysokým udržením energie plazmatu (H-mód) je jedním z klíčových
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předpokladů pro úspěšné dosažení hlavního cíle tokamaku ITER, jímž je desetinásobné fúzní
zesílení výkonu. Přechod do H-módu však může být významně ztížen v důsledku přítomnosti
chybových polí, které v tokamaku nevyhnutelně vznikají jako důsledek nepřesností v
umístění magnetických cívek či centrálního... -
Siváček I.09/09/2020, 17:20Poster
Measurements of energy dependence of the total reaction cross section with exotic, neutron-
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rich nuclei are used to study the phenomena related to the structure of weakly bound neutrons
in neutron halo and neutron skin. A spectrometer „MULTI-2“ for direct measurement of the
total reaction cross section with radioactive beams is presented, together with some results
obtained on the setup.... -
Karpets M.09/09/2020, 17:20Poster
Transformers are one of the significant parts of the electrical power system. As the power
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transmission system is opting for high voltage high power transmission, high performance
insulating materials are drawing attention of the electrical power industry. Nanofluids, formed
by adding nanoscale particles to insulating oil, are stable and homogeneous suspensions that
present advanced... -
Pokorný J.09/09/2020, 17:20
The H–function is the most important part for determining the absorption coefficient. This
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article deals with the calculation of the H–function of selected bands of molecular oxygen.
Program calculations are performed on the basis of freely available data from world databases
(NIST) and book sources (e.g. Glushko, Rosen) providing the possibility of comparison.
For the structural... -
Král P.09/09/2020, 17:20
Thanks to the specific electronic structure the rare earth-based compounds, especially
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those containing Yb, Ce or Eu, often exhibit exceptional magnetic properties. In our study we
have focused on cerium-based compound Ce 2 Pd 2 In belonging to the family of R 2 T 2 X
compounds crystallizing in tetragonal Mo 2 FeB 2 -type structure. Previous studies revealed
presence of two magnetic phase... -
Staško D.09/09/2020, 17:20Poster
Pressure-induced superconductivity in CeRhSi 3 and CeIrSi 3 has attracted a significant
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attention for unconventional nature of the superconductivity in a non-centrosymmetric lattice.
All previous results, however, were limited to maximum 3 GPa of applied pressure. We focus
on a high-pressure-region behavior of the pressure-induced superconductivity in CeRhSi 3 . Our
study was performed... -
Dr S. Kotorová (Faculty of Electrical Engineering and Information Technology, Slovak University of Technology, Ilkovičova 3, Bratislava, Slovakia)09/09/2020, 17:20Poster
The usual interband transitions S0–S0, S0–S1, S0–S2 can be clearly identified in the recently published photoluminescence measurements on P3HT layers. However, in many cases the spectra are characterized by weaker ripples besides these main features. We point out their possible interpretation by means of the H and J aggregates theory proposed by Spano (F. C. Spano, J. Chem. Phys. 122,...
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Jakubský V.09/09/2020, 17:20Poster
We use the Wick-rotated time-dependent supersymmetry to construct models of two-
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dimensional Dirac fermions in presence of an electrostatic grating. We show that there
appears omnidirectional perfect transmission through the grating at specific energy.
Additionally to being transparent for incoming fermions, the grating hosts strongly localized
states.
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