RSS 1.0Physics (Theses and Dissertations)
Recent Submissions
-
Monitoring and Modelling Geomagnetic and Geoelectric Fields in Ireland
(Trinity College Dublin. School of Physics. Discipline of PhysicsTrinity College Dublin, School of Physics, 2024)Geomagnetic storms form in response to the arrival of solar storms at the Earth, which interact with the Earth's magnetic field and can lead to geomagnetic storms. Magnetic field variations generated during geomagnetic ... -
Plasmonic interactions of gold nanoparticles with photoluminescent materials
(Trinity College Dublin. School of Physics. Discipline of Physics, 2024)The variable plasmonic resonances of metal nanoparticles have many applications across a wide range of fields, including the modification of the emission of photoluminescent materials. The plasmonic interactions of gold ... -
Surface Studies of Niobium Oxides
(Trinity College Dublin. School of Physics. Discipline of Physics, 2024)In this thesis, two important niobium-oxygen systems are studied. The first system is the NbO "nanocrystal" termination of Nb(110). A new model to explain this structure based on a monolayer of oxygen covering the surface ... -
A TEM Heart Transplant: The Development of a User Adjustable Pole-piece (UAP)
(Trinity College Dublin. School of Physics. Discipline of Physics, 2024)Transmission Electron Microscopes (TEMs) have massively accelerated progress in many areas of science, particularly biology and material science. Atomic-scale resolution was achieved soon after the invention of the TEM, ... -
Mechanical Characterisation of Printed Nanosheet Network Thin Films
(Trinity College Dublin. School of Physics. Discipline of Physics, 2024)The response of materials to applied stress and the resulting deformation is a fundamental cornerstone of condensed matter physics and materials research. From exciting new prospects such as the conductive nanosheet ... -
Modelling electromechanical properties of 2D materials and heterostructures
(Trinity College Dublin. School of Physics. Discipline of Physics, 2024)Strain, both naturally occurring and deliberately engineered, can have a considerable effect on the structural, electronic, and transport properties of 2D and layered materials. Uniaxial or biaxial heterostrain (i.e. ... -
The Jacobi-Legendre framework for Machine Learning in Materials Investigation and Discovery
(Trinity College Dublin. School of Physics. Discipline of Physics, 2024)Machine-learning models have rapidly become fundamental tools in the study of materials properties. In the past few years there has been a surge of interest in the construction of new models and descriptors to accelerate ... -
Arrangements of lines of hard and soft spheres in confinement
(Trinity College Dublin. School of Physics. Discipline of Physics, 2024)Chains of particles, ranging from one-dimensional to three-dimensional structures, offer an avenue of research spanning condensed matter physics to microengineering, providing insights into material behaviour across diverse ... -
Magnetic Fields and Accretion Processes in Young Stars: A case study of the classical T Tauri star DK Tau
(Trinity College Dublin. School of Physics. Discipline of Physics, 2024)Low-mass young stars that are a few million years old and called classical T Tauri stars (cTTs) experience magnetospheric accretion. They are surrounded by a circumstellar disk (which consists of an inner and outer disk) ... -
Fast automated mineral differentiation using optical hyperspectral imaging
(Trinity College Dublin. School of Physics. Discipline of Physics, 2024)The processing of mineral-bearing rocks in the mining industry is a highly energy and resource-intensive process. This has motivated the development of more effective ways to automatically sort valuable ore from barren ... -
Novel Characterisation and Modelling Techniques for Spintronic Materials
(Trinity College Dublin. School of Physics. Discipline of Physics, 2024)Spintronic materials have the potential to revolutionise certain aspects of information technology. An ideal material for spintronics is a zero-moment half-metal (ZMHM), which exhibits no stray magnetic field but simultaneously ... -
Design of Novel Magnetic Materials with Machine-Learning and High-Throughput Techniques
(Trinity College Dublin. School of Physics. Discipline of Physics, 2024)The importance of magnetic materials in modern applications is unquestionable. They are used in a wide range of applications, going from data storage devices to green energy production. This class of materials is well known ... -
Data-driven magnetic materials inverse design
(Trinity College Dublin. School of Physics. Discipline of Physics, 2024)Magnetic materials have diverse applications across multiple sectors, ranging from magnetic resonance imaging machines, used to detect diseases, to electric motors, sensors, and wind turbines just to name a few. The demand ... -
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 ...
