Physics (Theses and Dissertations): Recent submissions
Now showing items 61-80 of 458
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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 ... -
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 ... -
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 ... -
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 ... -
Spectroscopic studies of on-surface synthesis of chiral graphene nanoribbons
(Trinity College Dublin. School of Physics. Discipline of Physics, 2023)The field of on-surface synthesis bridges physics, chemistry, material and surface science by combining the tunability of molecular materials, the advantages of self-assembly with the sturdiness of covalently bonded ... -
Quantifying Battery Rate Performance
(Trinity College Dublin. School of Physics. Discipline of Physics, 2023)The global energy demand is quickly increasing and sustainable energy solutions are needed to keep pace. Batteries have emerged as the premier energy storage solution for increasing the adoption of renewable energy sources, ... -
Characterisation of SemiconductorLasers for use as a Pump Source for Microresonators
(Trinity College Dublin. School of Physics. Discipline of Physics, 2023)Optical frequency combs (OFCs) were first developed in the 1990s, initially as a means to count the cycles from atomic clocks. They have since proved very useful as a tool for metrology, sensing and frequency synthesis. ... -
Evaluation of 3D Photogrammetry Tools for Applications in the Scanning Electron Microscope
(Trinity College Dublin. School of Physics. Discipline of Physics, 2023)3D models find application in a range of materials science areas, from fractography and failure studies to 3D printed metal topology. Atomic force microscopy (AFM) is commonly used for measuring surface topology, though ... -
Non-equilibrium transport properties of quasiperiodic models
(Trinity College Dublin. School of Physics. Discipline of Physics, 2023)The advances in the manipulation of ultracold atoms trapped by optical lattices has established this set-up as a promising analogue simulator of quantum Hamiltonians. The extended coherence times allow for the monitoring ... -
Improved Solar Thermal Technology For Decarbonising Residential Heating
(School of Physics, Physics, 2023)The field of solar energy harvesting has emerged over the last number of years as one with considerable scope to provide clean and renewable electricity and heat. Solar Thermal (ST) technology is vital to tackle the pressing ... -
Hard Spheres, Soap Bubbles, and Hydrogels in Research and Education
(Trinity College Dublin. School of Physics. Discipline of Physics, 2023)This thesis concerns various experiments using hard spheres, soap bubbles, hydrogel spheres, and soap films in which we will show these are suitable candidates for research and can be easily performed in universities, ... -
Optical Characterisation of Metallic and Biological Nanoparticles
(Trinity College Dublin. School of Physics. Discipline of Physics, 2023)Nanotechnology is a rapidly growing technology with applications that affect many industries in the global economy. Two such industries are optoelectronics and healthcare. With the increased demand for smaller, more ... -
Machine Learned Compact Kinetic Models for Combustion
(Trinity College Dublin. School of Physics. Discipline of Physics, 2023)Chemical kinetic models are an essential component in the development and optimisation of combustion devices through their coupling to multi-dimensional simulations such as computational fluid dynamics (CFD). Due to the ...
