School of Physics: Recent submissions
Now showing items 121-140 of 2200
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Magnetic Field Enhancement of Water Evaporation in Confined Spaces
(2023)Water is studied in confined environments where it evaporates into its own vapor. Simultaneous experiments are conducted for 0.4–0.5 µL droplets confined at the center of 54 mm long microchannels with a cross section of ... -
Characterising Pulsars with Low-Frequency Software Telescopes
(Trinity College Dublin. School of Physics. Discipline of Physics, 2024)Pulsars are a class of rapidly rotating neutron stars that periodically provide detectable emission in the direction of the Earth, where it can be detected by telescopes across the electromagnetic spectrum. These husks of ... -
Machine Learning for Novel Ternary Materials Discovery
(Trinity College Dublin. School of Physics. Discipline of Physics, 2024)First principles codes based on DFT are now sufficiently accurate and efficient that they can be used in the design of novel materials with specifically selected properties. Doing so requires checking whether a compound ... -
Multifunctional Thin Films of Vanadium Oxides for Enhanced Energy Applications
(Trinity College Dublin. School of Physics. Discipline of Physics, 2024)This thesis deals with the growth, characterisation, and application of VO2 and V2O3 thin films. Various methods were employed to prepare and analyze the VO2 and V2O3 films, aiming to explore the suitability of their ... -
Solution Processed Semiconducting Nanosheet Networks Towards Optoelectronic Applications
(Trinity College Dublin. School of Physics. Discipline of Physics, 2024)Two-dimensional (2D) semiconducting transition metal chalcogenides (TMDs) are attractive materials owing to their superb electronic and optoelectronic properties. The great advancement of material exfoliation and thin film ... -
Deterministic multi-level spin orbit torque switching using focused He+ ion beam irradiation
(2023)He+ ion irradiation is used to pattern multiple areas of Pt/Co/W films with different irradiation doses in Hall bars. The resulting perpendicular magnetic anisotropy landscape enables selective multilevel current-induced ... -
Influence of topology on the phase transition of a ferromagnetic metal
(2023)The topological ferromagnet CoS2 exhibits an anhysteretic, weakly first-order transition at the Curie temperature of 119.8 K with a tricritical point µ0Htcp at 0.034 T. Magnetic symmetry and the mixing of majority and ... -
Ferromagnetic resonance damping mechanisms in CoFeB thin films with Cr substitution
(2023)The substitution of iron atoms by chromium in CoFeB films has been proposed to reduce the critical current density Jc for current-driven magnetization switching in spin transfer torque devices by reducing its magnetization. ... -
A fully compensated ferrimagnetic half metal Co1-xCrxS2 with Curie temperature above room temperature
(2023)Fully compensated ferrimagnetic half metals have attracted great attention in spintronics. Unlike many previous calculations based on hypothetical ordered alloys, here we look for existing solid solution series taking as ... -
Structural, magnetic and electronic properties of L21 -ordered Ru2-xMn1+xAl Heusler alloy thin films
(2023)The cubic Heusler alloy Ru2–xMn1+xAl is grown in thin film form on MgO and MgAl2O4 substrates. It is a highly spin-polarised ferrimagnetic metal, with weak magnetocrystalline anisotropy. Although structurally and chemically ... -
Accelerating Materials Discovery with Machine Learning
(Trinity College Dublin. School of Physics. Discipline of Physics, 2024)Materials discovery has always been constrained by the classic approach to scientific discovery, often characterized by a combination of either human intuition or luck. Machine learning (ML) gives us the opportunity to ... -
Investigating the Feasibility of Photostimulation for the Development of a Low Energy-Spread Electron Microscope Source.
(Trinity College Dublin. School of Physics. Discipline of Physics, 2024)Electron microscopes use fast-moving electrons as illumination to generate high resolution images down to the atomic scale. They are a valuable tool in various research fields, from palaeontology to material science. Low ... -
Machine-learning approaches for the enhancement of 2D and 3D electron microscopy data
(Trinity College Dublin. School of Physics. Discipline of Physics, 2023)Electron microscopy allows academic and industrial users to investigate the structure and properties of a variety of materials. However, some limitations are imposed by the instrumentation and the nature of the analyzed ... -
High-Figure-of-Merit Biosensing and Enhanced Excitonic Absorption in an MoS2-Integrated Dielectric Metasurface
(2023)Among the transitional metal dichalcogenides (TMDCs), molybdenum disulfide (MoS2) is considered an outstanding candidate for biosensing applications due to its high absorptivity and amenability to ionic current measurements. ... -
Materials for epitaxial superconducting heterostructures: Nb, NbN and NbO/Nb
(Trinity College Dublin. School of Physics. Discipline of Physics, 2023)Josephson Junctions are junctions that operate under the Josephson effect, the tunnelling of electrons through a non-superconducting layer between two superconducting layers. They are popular candidates for the realisation ... -
Magnetization, Anomalous Hall Effect and Single Pulse Partial All-optical Switching in Amorphous Rare-earth Transition-metal Thin Films
(Trinity College Dublin. School of Physics. Discipline of Physics, 2023)Research on rare-earth (R) transition-metal (T) thin films has a long history. A revival of interest in this field was sparked by the discovery of single pulse all-optical switching (SP-AOS) in a-GdFeCo1 alloy thin films ... -
Nanoscale Gap-Plasmon-Enhanced Superconducting Photon Detectors at Single-Photon Level
(2023)With a growing demand for detecting light at the single-photon level in various fields, researchers are focused on optimizing the performance of superconducting single-photon detectors (SSPDs) by using multiple approaches. ... -
New Technologies for Ultra-low Dose-rate Imaging in the STEM
(Trinity College Dublin. School of Physics. Discipline of Physics, 2023)Electron microscopy arose from the need to image materials beyond the resolution optical microscopes could achieve. Though taking many years and technological advancements, the modern scanning transmission electron microscope ... -
Quantum transport in 2D materials: Theoretical and computational optimisation of large heterostructures with spintronics properties
(Trinity College Dublin. School of Physics. Discipline of Physics, 2023)Graphene is a monolayer of carbon atoms arranged in a hexagonal lattice, making it the thinnest and strongest material known to man. Its exceptional electronic and thermal properties have generated great interest for its ...
