Physics (Theses and Dissertations): Recent submissions
Now showing items 41-60 of 458
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Understanding the diversity of Type Ia supernovae from early to late times
(Trinity College Dublin. School of Physics. Discipline of Physics, 2024)Type Ia Supernovae (SNe Ia) have been pivotal in the formation of the 21st Century view of the universe due to their involvement in the discovery of the accelerated expansion of the universe. However, an all-encompassing ... -
Fabrication and electromagnetic properties of metallic nano-helices
(Trinity College (Dublin, Ireland). School of Physics, 2014)Helically-shaped sytems are widely known in physics, biology or chemistry. Examples are some types of carbon nanotubes, DNA and collagen (double and triple helices, respectively), lipid bilayers, bacterial flagella (Salmonella ... -
Improved Efficiency and Longevity of Solar PV Systems Through Enhanced Passive Convection
(Trinity College Dublin. School of Physics. Discipline of Physics, 2024)Solar PV technology is growing rapidly and becoming a crucial part of international and national energy infrastructure. Current commercially sold Si solar PV (Photovoltaic) panels, with ~21% efficiency and a projected ... -
Optimisation of non-Markovian systems using tensor networks
(Trinity College Dublin. School of Physics. Discipline of Physics, 2024)Structured environments that do not admit simple time-local descriptions display a wealth of features which are otherwise absent from unstructured environments. Here we use optimal control to learn how to perform quantum ... -
The Magnetic, Magneto-transport and Magneto-optical Properties of Mn4-xGaxN Thin Films
(Trinity College Dublin. School of Physics. Discipline of Physics, 2024)Thin film Mn4N has recently gained a lot of attention for possible use in spintronic applications, owing to its perpendicular magnetic anisotropy (PMA), low saturation magnetisation and large anomalous Hall effect (AHE). ... -
Investigation of Polymer-based Responsive Photonic Structures Fabricated by Two Photon Polymerisation
(Trinity College Dublin. School of Physics. Discipline of Physics, 2024)In this thesis, various 2D and 3D submicron polymer-based photonic structures are investigated for structural colour generation. 2D diffractive gratings have been designed and theoretically investigated by using ... -
Droplet Dynamics of Graphene Oxide Suspensions
(Trinity College Dublin. School of Physics. Discipline of Physics, School of Physics, 2024)The emergence of printed electronics as an application of Drop on Demand (DoD) inkjet printing has highlighted the importance of understanding the dynamics of this process for non-Newtonian fluids. From jetting to droplet ... -
Monitoring and Modelling Geomagnetic and Geoelectric Fields in Ireland
(Trinity College Dublin. School of Physics. Discipline of Physics, Trinity 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 ...
