-
Mariana Da Silva Ribeiro25/01/2024, 09:00
As humanity is faced with the urgency of the climate crisis, already suffering from its consequences such as rising temperatures and severe weather events, one of the century's great challenges is to reduce emissions and find new, renewable energy sources.
Go to contribution page
The conversion of $CO_2$, the biggest polluter, into oxygen and carbon monoxide, a valuable fuel, through the innovative use of... -
Mariana Ribeiro (Instituto Superior Técnico)25/01/2024, 09:30
As humanity is faced with the urgency of the climate crisis, already suffering from its consequences such as rising temperatures and severe weather events, one of the century's great challenges is to reduce emissions and find new, renewable energy sources.
Go to contribution page
The conversion of CO2, the biggest polluter, into oxygen and carbon monoxide, a valuable fuel, through the innovative use of non-thermal... -
Rui Martins (Instituto Superior Técnico)25/01/2024, 09:42
Atmospheric carbon dioxide (CO2) has been increasing since the beginning of the industrial revolution mainly from the combustion of fossil fuels. This makes it very important to find alternative energy sources in which CO2 is not emitted and ways to remove it artificially from the atmosphere. One solution for both this problems is the Fischer–Tropsch cycle, but that requires the dissociation...
Go to contribution page -
Gonçalo Cardoso (Instituto Superior Técnico)25/01/2024, 09:54
Low-temperature plasmas are characterized by a strong non-equilibrium nature which can be used to favour certain chemical processes thus making these plasmas suitable for a wide range of applications in materials processing, plasma medicine, biology and agriculture, among others. In these systems, the dominant energy transfer mechanisms are collisions between electrons and neutrals. However,...
Go to contribution page -
Mário Vaz (Instituto Superior Técnico)25/01/2024, 10:06
Nuclear fusion is a promising solution to the world energy problems, but it requires a mixture of deuterium and tritium to be heated to temperatures exceeding 100 million degrees Celsius. Regimes with improved confinement, such as the H-mode, are being considered for a future fusion reactor. The existence of a strong shear (gradient) in the plasma flow is thought to be fundamental for the...
Go to contribution page -
Diogo Simões (Instituto Superior Técnico)25/01/2024, 10:18
This work explores the possibility of synthesis of NH3 through plasma processes induced by an electrical discharge in a gas. The two-term approximation for the Boltzmann equation and the rate-balance system of equations are used as a self-consistent theoretical model for the study of this system, solved with a computational implementation which couples both with convergence cycles. Exploring...
Go to contribution page -
Carlos Cunha (Instituto Superior Técnico)25/01/2024, 11:00
Two-dimensional (2D) materials stand out as promising candidates for electronic and sensor applications, owing to their exceptional characteristics including flexibility, transparency, high carrier mobility, and tuneable bandgap. Despite significant progress in 2D material growth, the use of incompatible substrates requires a transfer process, during which the material is contaminated by...
Go to contribution page -
Alexandre Sequeira (Instituto Superior Técnico)25/01/2024, 11:12
Plasma exists over a wide range of both temporal and spatial scales, going from the fusion reactors to the huge, and far away, galaxies. A better understanding of plasma physics is needed both for our fundamental understanding of the universe, but also to enable the development of new technologies.However, plasma modelling can be very challenging,due to its multi-scale nature.
Go to contribution page
Machine... -
Francisco Assunção (Instituto Superior Técnico)25/01/2024, 11:24
Under the presence of strong electromagnetic fields, the electromagnetic radiation emmited by an accelerated charged particle will have a significant impact on its own trajectory. In these cases, it becomes crucial to include a radiation reaction force into the equations of motion to accurately describe the dynamics of charged particles.
In this work, we study how radiation reaction will...
Go to contribution page -
David Matias Cristino (Instituto Superior Técnico)25/01/2024, 11:36
The amplification of intense laser pulses is a complex process, as they can easily damage the optical components they pass through. Not only that, but the creation of intense ultrashort pulses in the Mid-Infrareds has always been limited by the inexistent of good gain materials. Optical Parametric Chirped Pulse Amplification (OPCPA) is a technique that combines OPA and CPA, solving both of...
Go to contribution page -
João Marques (Instituto Superior Técnico)25/01/2024, 11:48
In this work, we present Time-Resolved InfraRed (TRIR) absorption spectroscopy as a tool to study ultrafast molecular dynamics, and the process to develop an ultra-fast material study workstation. This research emphasises the critical role of ultra-fast lasers in capturing the transient states of molecules, essential for understanding their dynamic behaviour. The focus is on the design,...
Go to contribution page -
Miguel Mendes (Instituto Superior Técnico)25/01/2024, 12:00
With the increase in demand for ultra-short high-powered pulses, the understanding of Spatio Temporal Couplings (STCs) is now more important than ever. Interaction with certain optical instruments (prisms, gratings, etc…) means very short pulses can no longer be reasonably predicted using the simple Gaussian equation. We must therefore take the changes that occur in a pulse into account, by...
Go to contribution page -
William Narciso (Instituto Superior Técnico)25/01/2024, 12:12
-
Catarina Cartaxo (Instituto Superior Técnico)25/01/2024, 12:24
The generation of ocean energy by waves is currently still in the research and development phase. This is partly because the technology is not yet mature, and partly because large-scale initiatives are not economically viable. The economic feasibility of the energy conversion system can be increased by integrating wave energy converters into breakwaters. By pooling the costs of construction,...
Go to contribution page -
Daniela Cardoso (Instituto Superior Técnico)25/01/2024, 14:30
The second phase of the LHC will collect an unprecedented amount of proton-proton data at the highest centre-of-mass energies ever achieved. The machine is expected to provide an average of 140 simultaneous collisions each bunch crossing at a luminosity of around 5x10³⁴ cm⁻² s-¹. This poses a challenge to the detectors which will have to cope with a harsh radiation environment and will be...
Go to contribution page -
Tomás Silva (Instituto Superior Técnico)25/01/2024, 14:42
Human biases influence behavior and society, sometimes leading to discrimination and poor judgment. While algorithms were initially thought to be free from human biases, it's now understood that they can amplify existing biases, especially when trained on human-generated data. To address this, methods for identifying and mitigating biases in machine learning (ML) algorithms have been...
Go to contribution page -
Isabel Alexandre (Instituto Superior Técnico)25/01/2024, 14:54
Muon tomography uses the natural flux of muons created by cosmic rays in the Earth's atmosphere to image large structures, being sensitive to their shape and density. The LouMu team operates an RPC-based muon telescope at an underground gallery at the Lousal mine, testing muography as a new geophysical survey technique. A first target was a known regional geological fault crossing the gallery,...
Go to contribution page -
Francisco Ferreira (Instituto Superior Técnico)25/01/2024, 15:06
Muon tomography takes advantage of the natural flux of muons created by the interaction of cosmic rays with the Earth’s atmosphere to image large structures, being sensitive to their shape and density. Being a non-invasive method, muography comes forth as a prime candidate to use in urban settings, giving us an unprecedented upwards look into the hidden spaces beneath our cities. This work...
Go to contribution page -
Afonso Guerreiro (Instituto Superior Técnico)25/01/2024, 15:18
Despite some results indicating that factorization survives in most phenomenological relevant scenarios, the underlying assumptions may be too restrictive and erase most of the relevant dynamics. Motivated by the ongoing effort to verify the factorizability of successive in-medium emissions, this work aims to obtain the matrix elements for the emission of two gluons by an energetic quark in...
Go to contribution page -
José dos Santos (Instituto Superior Técnico)25/01/2024, 15:30
Quantum Chromodynamics (QCD) is a rich area of Particle Physics with much still to be understood. Namely, analytical derivations from first principles of the emergent phenomena of hadronisation and associated colour confinement have yet to be found. This drives a search for inputs from the experimental exploration of QCD, such as the heavy ion collisions performed at RHIC and the LHC.
In...
Go to contribution page -
Diogo Costa (Instituto Superior Técnico)25/01/2024, 15:42
In ultra-relativistic heavy-ion collisions, it is possible to reach extreme conditions of temperature and density that allow to recreate the primordial state of the Universe where the fundamental degrees of freedom of Quantum Chromodynamics (quarks and gluons), are deconfined: the Quark-Gluon Plasma (QGP). The study of this hot and dense medium is at the forefront of the physics research at...
Go to contribution page -
Henrique Santos (Instituto Superior Técnico)25/01/2024, 16:30
-
Inês Pinto (Instituto Superior Técnico)25/01/2024, 16:42
Anomaly Detection has recently emerged as a novel path to explore the Large Hadron Collider’s (LHC) data in the search for phenomena beyond the Standard Model (SM) of Particle Physics. Technically, it relies on machine learning algorithms with the ability to model the SM background expectation and detect potential New Physics events that differ from that background. This approach complements...
Go to contribution page -
Inês Moreira (Instituto Superior Técnico)25/01/2024, 16:54
The Standard Model (SM) of Particle Physics is notably descriptive and predicted new particles well in advance. Still, there is paramount evidence for the need of New Physics beyond the Standard Model (BSM), Conventionally, searches are driven by specific signals and theory assumptions, preventing a complete exclusion of new phenomena. A new paradigm is to use Anomaly Detection techniques in...
Go to contribution page -
Marta Silva (Instituto Superior Técnico)25/01/2024, 17:06
There are many observed phenomena in Nature which the Standard Model of Particle Physics (SM), despite its successes, is not able to describe. One of the major questions left unaddressed by the SM is the observed asymmetry between matter and antimatter in the Universe. Violation of charge-parity (CP) symmetry in the Higgs boson sector is a well motivated way to address the discrepancy between...
Go to contribution page -
Beatriz Rosalino (Instituto Superior Técnico)25/01/2024, 17:18
A big open question in our understanding of the universe comes from there being more matter than antimatter in the universe today, while the theory predicts the Big Bang produced the same amount of each. A condition for this difference to exist is a violation of Charge and Parity symmetry. According to some new theories, this violation could originate in interactions with the Higgs boson that...
Go to contribution page -
José Rocha (Instituto Superior Técnico)25/01/2024, 17:30
The Standard Model (SM) of particle physics describes three of the four fundamental forces in nature: electromagnetic (EM), weak, and strong interaction. Besides its theoretical elegance, the SM provides a unified framework to explain a plethora of natural phenomena, leading to predictions that stand up to rigorous experimental testing. Nonetheless, some questions remain unanswered within this...
Go to contribution page -
Tomás Mendes (Técnico Lisboa)26/01/2024, 09:00
Phase transitions in the early universe are critical events that played a crucial role in shaping the structure and properties of the cosmos.
Go to contribution page
Understanding these transitions is essential for constructing a comprehensive picture of the early universe's evolution.
In this work, we present a detailed description of the symmetry breaking dynamics of a beyond the Standard Model extension. This... -
João Álvares26/01/2024, 09:10
Starting from an asymptotically flat spacetime, we slice it according to Hyperboloidal slices, contraty to the usual Cauchy slices. These allow one to reach Future Null Infinity in a smooth way, which serves as a good approximation to the position of an observer on Earth with respect to sources of gravitational radiation. Until now, the work has managed to simulate a complex scalar field,...
Go to contribution page -
Pedro Baptista26/01/2024, 09:24
Hawking Radiation, proposed by physicist Stephen Hawking in 1974, is a theoretical result stating that black holes emit particles in accordance to Planck’s Distribution of Thermal Radiation. This outcome arises by coupling classical spacetime to quantum fields. The emission of particles is not a standalone characteristic of black holes, rather it’s a consequence of gravitational collapse. By...
Go to contribution page -
João Rebelo26/01/2024, 09:35
The past decade has witnessed remarkable progress in the detection of gravitational waves, with milestones such as the direct observation of binary black hole mergers and binary neutron star coalescence. Numerical relativity stands as a crucial tool for understanding gravity, particularly in extreme scenarios where analytical solutions become impractical.
The critical aspect of constructing...
Go to contribution page -
João Silva26/01/2024, 09:48
Massive bosonic fields can form confined structures, held together by their own gravity, known as boson stars, in the case of scalar fields, or Proca stars, in the case of vector fields. Such bosonic structures have been proposed as possible “dark matter stars” and, for ultralight fields, have been shown to be a good description of dark matter haloes. If such stars are sufficiently massive,...
Go to contribution page -
Rafael Dias26/01/2024, 10:00
Magnetic Tunneling Junctions (MTJs) are fundamental components of spintronics, offering high sensitivity to magnetic fields and many potential applications. However, these devices are susceptible to various noise sources, the most problematic being the so-called 1/f noise that is particularly detrimental to device performance at low frequencies.
1/f noise is ubiquitous in electronic devices...
Go to contribution page -
José Afonso26/01/2024, 10:10
In the field of condensed matter physics, recent research on quantum transport setups has been instrumental in advancing quantum computing and sensing technologies, as well as contributing to theoretical physics. This thesis delves into bias-driven non-equilibrium phase transitions, specifically examining the dynamics and characteristics of these transitions beyond equilibrium scenarios. The...
Go to contribution page -
Miguel Moreira26/01/2024, 10:24
Nowadays, the increasing amount of data requires more and more sophisticated tools that are capable of processing it, without the need of human assistance. Fields such as computer vision, speech recognition, and self-driving cars rely on artificial neural networks and their interconnected structure to find common patterns in data. This is due to their structure which is inherently adaptable in...
Go to contribution page -
Rodrigo Pereira26/01/2024, 11:00
Achieving undeniable quantum supremacy requires the precise manipulation of many high-quality qubits. Whether the endeavor of building such a quantum computer is possible remains a central question with profound implications for both physics and technology. Currently, we are living in the "noisy intermediate-scale quantum" (NISQ) era, characterized by small and imperfect quantum processors....
Go to contribution page -
Diogo Aguiar26/01/2024, 11:10
Almost 40 years after Feynman first predicted the need for quantum computers, John Preskill coined the term noisy intermediate-scale quantum (NISQ) computers to describe the current stage of development of quantum computers. The NISQ era is characterized by an increased number of qubits available as well as by a significant lack of precision in manipulating these. Therefore, suitable diagnosis...
Go to contribution page -
Afonso Azenha26/01/2024, 11:25
Amidst the quantum revolution, promises of groundbreaking advancements abound, yet the current reality falls short, as quantum computers grapple with the limitation of insufficient qubits. We are now in the NISQ era - Noisy Intermediate-Scale Quantum - marked by imperfect qubits and error-prone quantum gates. To harness utility from these machines, we embrace Hybrid Quantum-Classical...
Go to contribution page -
Pedro Monteiro26/01/2024, 11:35
The main topic of my thesis is the study of the dynamics of ultra-cold atoms; a cloud of atoms will be cooled (laser cooling) to the order of hundreds $mK$ and trapped using an external magnetic field, hence the name for the experimental apparatus: Magneto-optical-trap.Through this experimental apparatus, I will study the turbulent dynamics of this cloud, in particular, I will study the photon...
Go to contribution page -
Francisco Raposo26/01/2024, 11:45
One can derive a fluid model for a gas of neutral atoms which has been cooled down and trapped in a Magneto-Optical-Trap. Two main forces act on the system, one being the central trapping force, and the other a repulsive collective force induced by multiple-scattering and absorption of light, and whose intensity can be regulated by set-up parameters of the trap. This allows for its...
Go to contribution page -
Diogo Soares26/01/2024, 12:00
The far-from-equilibrium nature of glass-forming many-body systems challenges the development of controlled experiments to study their structural and dynamical properties. In the context of an ongoing collaboration, a tabletop setup consisting of frustrated magnetic spinners has been proposed which allows to perform experiments at the human scale in a controlled manner.
Combining methods...
Go to contribution page -
Leonardo Rodrigues26/01/2024, 12:10
The loss, theft, and smuggling of nuclear materials in an ever-increasingly modernized and connected world may pose a threat to the lives of many. Trafficking networks are finding new ways to smuggle radioactive materials across borders, while the development of detectors has seen little to no improvement.
Go to contribution page
This project aims to solve this problem through the development of a high-sensitivity... -
Ana Sofia Sousa (Instituto Superior Técnico)26/01/2024, 12:25
Gallium oxide is an ultrawide bandgap semiconductor that has shown great promise in recent years due to its distinctive properties and wide range of potential opto-electronic applications. Ga₂O₃ thin films, which can be used in Deep-UV photodetectors, oxygen sensors or Resistive RAMs, for example, are inexpensive and easy to produce, benefit from commercial microfabrication techniques and can...
Go to contribution page -
Eduardo Ferreira26/01/2024, 14:30
FISSIONIST (FISSION reactor simulator at IST) is a full scope simulator of a low power fission reactor built by IST students, using a control system of the Portuguese Research Reactor (RPI). It is based on real control instrumentation of a fission reactor, connected to programmable impulse/current sources, which simulate the response of a neutron detector with a power range from less than 1 mW...
Go to contribution page -
João Chaves26/01/2024, 14:40
Optimizing tunnel magnetoresistive sensors to cater to the unique dimensions and types of magnetic audio tapes. Explore sensor geometries that mitigate damage of the tapes, improving the amount of information extracted. Study and improvement of the scanning methodology to enable reliable and accurate scans with good signal-to-noise ratio. Converting data from damaged magnetic tapes into a...
Go to contribution page -
Francisco Simões26/01/2024, 14:50
The development of new hardware components is essential for supporting Artificial Intelligence (AI) computational tasks. Neuromorphic computing is witnessing a shift through the integration of advanced spintronics devices to replace CMOS technology. One example of these devices is the multilevel magnetic tunnel junctions (M2TJs) showing very interesting features to be employed on large neural...
Go to contribution page -
Carolina Almeida26/01/2024, 15:06
This research aims to translate Lenia—a computational model of artificial life based on cellular automata—into an optical system to meet the computational demands posed by AI hardware. We introduce nonlinearity into the optical system through the development of a physical nonlinear neural network. The initial phase involves the modeling of nonlinear material layers and comprehension of their...
Go to contribution page -
Francisco Mêda26/01/2024, 15:18
With a growing world population, food supply demand is sure to continue to grow as well. Therefore, more than ever, autonomous food harvesting techniques have become a necessity to match these ever-growing demands. Existing solutions relying on optical inspection face limitations, particularly in image quality dependence on factors such as lighting conditions. Tactile sensing-based...
Go to contribution page -
Joana Ramos26/01/2024, 15:30
Centrifugal microfluidic technology, applied in the context of Lab-on-a-CD platforms, presents a significant advancement in biomedical diagnosis. A partnership between INESC MN an VitalBio, allowed my research about the utilization of centrifugal microfluidics in blood work analysis and how it simplifies fluid handling in microscale channels, leading to more efficient, precise and fast...
Go to contribution page -
Miguel Teixeira26/01/2024, 15:42
The development of biologically accurate models has enabled biologists and neurologists to study and investigate the mechanisms of biological processes without having to interfere with, and potentially damage, the real system.
Go to contribution page
The human body comprises a vast number of complex systems, and this work aims to study one of these - the control of human eye motion.
To that end, a physical model of... -
Maria Beatriz Costa26/01/2024, 16:30
Magnetic Resonance Imaging (MRI) obtained for diagnosis in Medicine contains the amplitude and phase of the signal, the former of which is normally used for anatomical identification of structures and their alteration in disease. The information is determined, among other variables, by the movement of the structures under analysis and influenced by their magnetic susceptibility, depending on...
Go to contribution page -
Juna Santos26/01/2024, 16:40
Cardiac Magnetic Resonance (CMR) is a non-invasive imaging modality and has become the gold standard technique for evaluating myocardial function, quantifying myocardial volumes and detecting myocardial scar. However, CMR requires highly trained operators with a good knowledge of cardiac anatomy and CMR exam planning. Due to the variability of cardiac morphology and body shape between...
Go to contribution page -
João Olívia26/01/2024, 16:55
In this master thesis, we plan to develop a model for the propagation of electric signals in
Go to contribution page
the heart, including the auricles and ventriculus, to analyse the propagation
properties of the heart signal and the changes in the electric potential due to different
pathologies in the heart tissues as arrhythmias, tissue death, spiral waves and accessory
pathways. -
Isabel Alexandre
Muon tomography uses the natural flux of muons created by cosmic rays in the Earth's atmosphere to image large structures, being sensitive to their shape and density. The LouMu team operates an RPC-based muon telescope at an underground gallery at the Lousal mine, testing muography as a new geophysical survey technique. A first target was a known regional geological fault crossing the gallery,...
Go to contribution page -
João Olívia
In this master thesis, we plan to develop a model for the propagation of electric signals in
Go to contribution page
the heart, including the auricles and ventriculus, to analyse the propagation
properties of the heart signal and the changes in the electric potential due to different
pathologies in the heart tissues as arrhythmias, tissue death, spiral waves and accessory
pathways. -
Carolina Almeida
This research aims to translate Lenia—a computational model of artificial life based on cellular automata—into an optical system to meet the computational demands posed by AI hardware. We introduce nonlinearity into the optical system through the development of a physical nonlinear neural network. The initial phase involves the modeling of nonlinear material layers and comprehension of their...
Go to contribution page -
Rodrigo Pereira
Achieving undeniable quantum supremacy requires the precise manipulation of many high-quality qubits. Whether the endeavor of building such a quantum computer is possible remains a central question with profound implications for both physics and technology. Currently, we are living in the "noisy intermediate-scale quantum" (NISQ) era, characterized by small and imperfect quantum processors....
Go to contribution page -
José Afonso
In the field of condensed matter physics, recent research on quantum transport setups has been instrumental in advancing quantum computing and sensing technologies, as well as contributing to theoretical physics. This thesis delves into bias-driven non-equilibrium phase transitions, specifically examining the dynamics and characteristics of these transitions beyond equilibrium scenarios. The...
Go to contribution page -
Joana Ramos
Centrifugal microfluidic technology, applied in the context of Lab-on-a-CD platforms, presents a significant advancement in biomedical diagnosis. A partnership between INESC MN an VitalBio, allowed my research about the utilization of centrifugal microfluidics in blood work analysis and how it simplifies fluid handling in microscale channels, leading to more efficient, precise and fast...
Go to contribution page -
Mr Rishav Pandey (Larsen & Toubro Limited, India)
The space-time picture of hadron formation in high-energy collisions with nuclear targets is still poorly known. The tests of hadron formation was suggested for the first stage of SPD running. They will require measuring charged pion and proton spectra with the precision better than $10\%$. A research has been carried out to check feasibility of such studies at SPD. In this work,...
Go to contribution page -
Afonso Azenha (PQI, CeFEMA)
Amidst the quantum revolution, promises of groundbreaking advancements abound, yet the current reality falls short, as quantum computers grapple with the limitation of insufficient qubits. We are now in the NISQ era - Noisy Intermediate-Scale Quantum - marked by imperfect qubits and error-prone quantum gates. To harness utility from these machines, we embrace Hybrid Quantum-Classical...
Go to contribution page -
João Álvares
Starting from an asymptotically flat spacetime, we slice it according to Hyperboloidal slices, contraty to the usual Cauchy slices. These allow one to reach Future Null Infinity in a smooth way, which serves as a good approximation to the position of an observer on Earth with respect to sources of gravitational radiation. Until now, the work has managed to simulate a complex scalar field,...
Go to contribution page -
Beatriz Costa
Magnetic Resonance Imaging (MRI) obtained for diagnosis in Medicine contains the amplitude and phase of the signal, the former of which is normally used for anatomical identification of structures and their alteration in disease. The information is determined, among other variables, by the movement of the structures under analysis and influenced by their magnetic susceptibility, depending on...
Go to contribution page -
Tomás Silva
Human biases influence behavior and society, sometimes leading to discrimination and poor judgment. While algorithms were initially thought to be free from human biases, it's now understood that they can amplify existing biases, especially when trained on human-generated data. To address this, methods for identifying and mitigating biases in machine learning (ML) algorithms have been...
Go to contribution page -
João Bernardo Silva (IST)
Massive bosonic fields can form confined structures, held together by their own gravity, known as boson stars, in the case of scalar fields, or Proca stars, in the case of vector fields. Such bosonic structures have been proposed as possible “dark matter stars” and, for ultralight fields, have been shown to be a good description of dark matter haloes. If such stars are sufficiently massive,...
Go to contribution page -
Afonso Guerreiro
Despite some results indicating that factorization survives in most phenomenological relevant scenarios, the underlying assumptions may be too restrictive and erase most of the relevant dynamics. Motivated by the ongoing effort to verify the factorizability of successive in-medium emissions, this work aims to obtain the matrix elements for the emission of two gluons by an energetic quark in...
Go to contribution page -
José Santos
Quantum Chromodynamics (QCD) is a rich area of Particle Physics with much still to be understood. Namely, analytical derivations from first principles of the emergent phenomena of hadronisation and associated colour confinement have yet to be found. This drives a search for inputs from the experimental exploration of QCD, such as the heavy ion collisions performed at RHIC and the LHC.
In...
Go to contribution page -
Diogo Soares
The far-from-equilibrium nature of glass-forming many-body systems challenges the development of controlled experiments to study their structural and dynamical properties. In the context of an ongoing collaboration, a tabletop setup consisting of frustrated magnetic spinners has been proposed which allows to perform experiments at the human scale in a controlled manner.
Combining methods...
Go to contribution page -
Francisco Raposo
One can derive a fluid model for a gas of neutral atoms which has been cooled down and trapped in a Magneto-Optical-Trap. Two main forces act on the system, one being the central trapping force, and the other a repulsive collective force induced by multiple-scattering and absorption of light, and whose intensity can be regulated by set-up parameters of the trap. This allows for its...
Go to contribution page -
Miguel Teixeira
The development of biologically accurate models has enabled biologists and neurologists to study and investigate the mechanisms of biological processes without having to interfere with, and potentially damage, the real system.
Go to contribution page
The human body comprises a vast number of complex systems, and this work aims to study one of these - the control of human eye motion.
To that end, a physical model of... -
Eduardo Ferreira
FISSIONIST (FISSION reactor simulator at IST) is a full scope simulator of a low power fission reactor built by IST students, using a control system of the Portuguese Research Reactor (RPI). It is based on real control instrumentation of a fission reactor, connected to programmable impulse/current sources, which simulate the response of a neutron detector with a power range from less than 1 mW...
Go to contribution page -
João Rebelo
The past decade has witnessed remarkable progress in the detection of gravitational waves, with milestones such as the direct observation of binary black hole mergers and binary neutron star coalescence. Numerical relativity stands as a crucial tool for understanding gravity, particularly in extreme scenarios where analytical solutions become impractical.
The critical aspect of constructing...
Go to contribution page -
Diogo Costa
In ultra-relativistic heavy-ion collisions, it is possible to reach extreme conditions of temperature and density that allow to recreate the primordial state of the Universe where the fundamental degrees of freedom of Quantum Chromodynamics (quarks and gluons), are deconfined: the Quark-Gluon Plasma (QGP). The study of this hot and dense medium is at the forefront of the physics research at...
Go to contribution page -
Leonardo Rodrigues
The loss, theft, and smuggling of nuclear materials in an ever-increasingly modernized and connected world may pose a threat to the lives of many. Trafficking networks are finding new ways to smuggle radioactive materials across borders, while the development of detectors has seen little to no improvement.
Go to contribution page
This project aims to solve this problem through the development of a high-sensitivity... -
Miguel Moreira
Nowadays, the increasing amount of data requires more and more sophisticated tools that are capable of processing it, without the need of human assistance. Fields such as computer vision, speech recognition, and self-driving cars rely on artificial neural networks and their interconnected structure to find common patterns in data. This is due to their structure which is inherently adaptable in...
Go to contribution page -
Alexandre Sequeira (Instituto Superior Técnico)
Plasma exists over a wide range of both temporal and spatial scales, going from the fusion reactors to the huge, and far away, galaxies. A better understanding of plasma physics is needed both for our fundamental understanding of the universe, but also to enable the development of new technologies.However, plasma modelling can be very challenging,due to its multi-scale nature.
Go to contribution page
Machine... -
José Maria Rebelo Rocha
The Standard Model (SM) of particle physics describes three of the four fundamental forces in nature: electromagnetic (EM), weak, and strong interaction. Besides its theoretical elegance, the SM provides a unified framework to explain a plethora of natural phenomena, leading to predictions that stand up to rigorous experimental testing. Nonetheless, some questions remain unanswered within this...
Go to contribution page -
Rui Martins
Atmospheric carbon dioxide (CO2) has been increasing since the beginning of the industrial revolution mainly from the combustion of fossil fuels. This makes it very important to find alternative energy sources in which CO2 is not emitted and ways to remove it artificially from the atmosphere. One solution for both this problems is the Fischer–Tropsch cycle, but that requires the dissociation...
Go to contribution page -
Gonçalo Cardoso
Low-temperature plasmas are characterized by a strong non-equilibrium nature which can be used to favour certain chemical processes thus making these plasmas suitable for a wide range of applications in materials processing, plasma medicine, biology and agriculture, among others. In these systems, the dominant energy transfer mechanisms are collisions between electrons and neutrals. However,...
Go to contribution page -
Francisco Simões
The development of new hardware components is essential for supporting Artificial Intelligence (AI) computational tasks. Neuromorphic computing is witnessing a shift through the integration of advanced spintronics devices to replace CMOS technology. One example of these devices is the multilevel magnetic tunnel junctions (M2TJs) showing very interesting features to be employed on large neural...
Go to contribution page -
Ines Isabel Gouveia Cipriano Piedade Moreira (LIP - Laboratorio de Instrumentação e Física Experimental de Partículas (PT))
The Standard Model (SM) of Particle Physics is notably descriptive and predicted new particles well in advance. Still, there is paramount evidence for the need of New Physics beyond the Standard Model (BSM), Conventionally, searches are driven by specific signals and theory assumptions, preventing a complete exclusion of new phenomena. A new paradigm is to use Anomaly Detection techniques in...
Go to contribution page -
David Cristino
The amplification of intense laser pulses is a complex process, as they can easily damage the optical components they pass through. Not only that, but the creation of intense ultrashort pulses in the Mid-Infrareds has always been limited by the inexistent of good gain materials. Optical Parametric Chirped Pulse Amplification (OPCPA) is a technique that combines OPA and CPA, solving both of...
Go to contribution page -
Catarina Cartaxo
The generation of ocean energy by waves is currently still in the research and development phase. This is partly because the technology is not yet mature, and partly because large-scale initiatives are not economically viable. The economic feasibility of the energy conversion system can be increased by integrating wave energy converters into breakwaters. By pooling the costs of construction,...
Go to contribution page -
Pedro Baptista
Hawking Radiation, proposed by physicist Stephen Hawking in 1974, is a theoretical result stating that black holes emit particles in accordance to Planck’s Distribution of Thermal Radiation. This outcome arises by coupling classical spacetime to quantum fields. The emission of particles is not a standalone characteristic of black holes, rather it’s a consequence of gravitational collapse. By...
Go to contribution page -
Daniela Beatriz Cabral Cardoso (LIP - Laboratorio de Instrumentação e Física Experimental de Partículas (PT))
The second phase of the LHC will collect an unprecedented amount of proton-proton data at the highest centre-of-mass energies ever achieved. The machine is expected to provide an average of 140 simultaneous collisions each bunch crossing at a luminosity of around 5x10³⁴ cm⁻² s-¹. This poses a challenge to the detectors which will have to cope with a harsh radiation environment and will be...
Go to contribution page -
Juna Santos
Cardiac Magnetic Resonance (CMR) is a non-invasive imaging modality and has become the gold standard technique for evaluating myocardial function, quantifying myocardial volumes and detecting myocardial scar. However, CMR requires highly trained operators with a good knowledge of cardiac anatomy and CMR exam planning. Due to the variability of cardiac morphology and body shape between...
Go to contribution page -
Ana Sofia Sousa (Instituto Superior Técnico)
Gallium oxide is an ultrawide bandgap semiconductor that has shown great promise in recent years due to its distinctive properties and wide range of potential opto-electronic applications. Ga₂O₃ thin films, which can be used in Deep-UV photodetectors, oxygen sensors or Resistive RAMs, for example, are inexpensive and easy to produce, benefit from commercial microfabrication techniques and can...
Go to contribution page -
Francisco Maria Gaspar de Assunção
Under the presence of strong electromagnetic fields, the electromagnetic radiation emmited by an accelerated charged particle will have a significant impact on its own trajectory. In these cases, it becomes crucial to include a radiation reaction force into the equations of motion to accurately describe the dynamics of charged particles.
In this work, we study how radiation reaction will...
Go to contribution page -
Francisco Ferreira
Muon tomography takes advantage of the natural flux of muons created by the interaction of cosmic rays with the Earth’s atmosphere to image large structures, being sensitive to their shape and density. Being a non-invasive method, muography comes forth as a prime candidate to use in urban settings, giving us an unprecedented upwards look into the hidden spaces beneath our cities. This work...
Go to contribution page -
Mr Carlos Cunha (IST)
Two-dimensional (2D) materials stand out as promising candidates for electronic and sensor applications, owing to their exceptional characteristics including flexibility, transparency, high carrier mobility, and tuneable bandgap. Despite significant progress in 2D material growth, the use of incompatible substrates requires a transfer process, during which the material is contaminated by...
Go to contribution page -
Diogo Simões (Instituto Superior Técnico)
This work explores the possibility of synthesis of NH3 through plasma processes induced by an electrical discharge in a gas. The two-term approximation for the Boltzmann equation and the rate-balance system of equations are used as a self-consistent theoretical model for the study of this system, solved with a computational implementation which couples both with convergence cycles. Exploring...
Go to contribution page -
Diogo Aguiar
-
Miguel Mendes
With the increase in demand for ultra-short high-powered pulses, the understanding of Spatio Temporal Couplings (STCs) is now more important than ever. Interaction with certain optical instruments (prisms, gratings, etc…) means very short pulses can no longer be reasonably predicted using the simple Gaussian equation. We must therefore take the changes that occur in a pulse into account, by...
Go to contribution page -
Pedro Monteiro
The main topic of my thesis is the study of the dynamics of ultra-cold atoms; a cloud of atoms will be cooled (laser cooling) to the order of hundreds $mK$ and trapped using an external magnetic field, hence the name for the experimental apparatus: Magneto-optical-trap.Through this experimental apparatus, I will study the turbulent dynamics of this cloud, in particular, I will study the photon...
Go to contribution page -
João Chaves
Optimizing tunnel magnetoresistive sensors to cater to the unique dimensions and types of magnetic audio tapes. Explore sensor geometries that mitigate damage of the tapes, improving the amount of information extracted. Study and improvement of the scanning methodology to enable reliable and accurate scans with good signal-to-noise ratio. Converting data from damaged magnetic tapes into a...
Go to contribution page -
Ines Gales Alves Correia Pinto (LIP - Laboratorio de Instrumentação e Física Experimental de Partículas (PT))
Anomaly Detection has recently emerged as a novel path to explore the Large Hadron Collider’s (LHC) data in the search for phenomena beyond the Standard Model (SM) of Particle Physics. Technically, it relies on machine learning algorithms with the ability to model the SM background expectation and detect potential New Physics events that differ from that background. This approach complements...
Go to contribution page -
Beatriz Rosalino (LIP - Laboratorio de Instrumentação e Física Experimental de Partículas (PT))
A big open question in our understanding of the universe comes from there being more matter than antimatter in the universe today, while the theory predicts the Big Bang produced the same amount of each. A condition for this difference to exist is a violation of Charge and Parity symmetry. According to some new theories, this violation could originate in interactions with the Higgs boson that...
Go to contribution page -
Marta Fernandes Silva (LIP - Laboratorio de Instrumentação e Física Experimental de Partículas (PT))
There are many observed phenomena in Nature which the Standard Model of Particle Physics (SM), despite its successes, is not able to describe. One of the major questions left unaddressed by the SM is the observed asymmetry between matter and antimatter in the Universe. Violation of charge-parity (CP) symmetry in the Higgs boson sector is a well motivated way to address the discrepancy between...
Go to contribution page -
Francisco Mêda
With a growing world population, food supply demand is sure to continue to grow as well. Therefore, more than ever, autonomous food harvesting techniques have become a necessity to match these ever-growing demands. Existing solutions relying on optical inspection face limitations, particularly in image quality dependence on factors such as lighting conditions. Tactile sensing-based...
Go to contribution page -
Supervisor Test (Instituto Superior Técnico)
Test abstract
Go to contribution page -
Mário Vaz
Nuclear fusion is a promising solution to the world energy problems, but it requires a mixture of deuterium and tritium to be heated to temperatures exceeding 100 million degrees Celsius. Regimes with improved confinement, such as the H-mode, are being considered for a future fusion reactor. The existence of a strong shear (gradient) in the plasma flow is thought to be fundamental for the...
Go to contribution page -
João Marques
In this work, we present Time-Resolved InfraRed (TRIR) absorption spectroscopy as a tool to study ultrafast molecular dynamics, and the process to develop an ultra-fast material study workstation. This research emphasises the critical role of ultra-fast lasers in capturing the transient states of molecules, essential for understanding their dynamic behaviour. The focus is on the design,...
Go to contribution page -
Rafael Dias
Magnetic Tunneling Junctions (MTJs) are fundamental components of spintronics, offering high sensitivity to magnetic fields and many potential applications. However, these devices are susceptible to various noise sources, the most problematic being the so-called 1/f noise that is particularly detrimental to device performance at low frequencies.
1/f noise is ubiquitous in electronic devices...
Go to contribution page
Choose timezone
Your profile timezone: