Browsing Physics (Theses and Dissertations) by Sponsor "Irish Research Council (IRC)"
Now showing items 1-20 of 28
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Atomic Diffusion and Pulsation in Post-Common-Envelope Binary Stars
(Trinity College Dublin. School of Physics. Discipline of Physics, 2020)I study the evolution of peculiar low-mass, evolved stars. Two groups of interest are the core-helium-burning hot subdwarfs and the shell-hydrogen-burning low-mass pre-white dwarfs. Stars in both groups have had previous ... -
Computational and Experimental Study of Optical properties of TiO2 Arrays Fabricated via Soft Nanoimprint Lithography
(Trinity College Dublin. School of Physics. Discipline of Physics, 2021)In this thesis the optical properties of large 1 mm2 titanium oxide (TiO2) nanoarrays and the interactions with Rhodamine 6G are studied computationally and experimentally. Three TiO2 arrays with different particle size ... -
Connections between Internal and Surface properties of Massive Stars
(Trinity College Dublin. School of Physics. Discipline of Physics, 2022)Massive stars have an important impact on the universe. They are responsible for the generation of many of the chemical elements such as oxygen and silicon. They can produce core collapse supernovae which impact the chemical ... -
Development and Characterisation of a Zero-Moment Half-Metal
(Trinity College Dublin. School of Physics. Discipline of Physics, 2021)A dream material for spintronics would have low/zero net moment, no stray fields, high resonance frequency, low damping and be 100 % spin polarised. Such materials combine the best features of a ferromagnet and an ... -
Dielectric focusing elements for integrated optics
(Trinity College Dublin. School of Physics. Discipline of Physics, 2018)The ability to propagate light around a `circuit' on a single chip has an abundance of applications. Connecting different elements can bring huge functionality to a minuscule device---as evidenced by integrated electronic ... -
Disorder and synchronization in nonequilibrium Bose-Einstein condensates
(Trinity College Dublin. School of Physics. Discipline of Physics, 2022)In this thesis, we investigate the impact of spatial disorder on driven-dissipative Bose-Einstein condensates (BECs). Bose-Einstein condensation is a collective phenomenon where many particles spontaneously occupy a single ... -
Dynamic structural colur in thin film stacks and patterned nanoparticle arrays
(Trinity College Dublin. School of Physics. Discipline of Physics, 2018)In this thesis a number of metal nanostructures have been investigated for structural colour at sub-micron scales. These structures have utilised localised surface plasmon resonance (LSPR) to produce near-field interactions ... -
The Effects of Rotation on the Evolution of the First Stars in the Universe
(Trinity College Dublin. School of Physics. Discipline of Physics, 2022)Understanding the nature of the first stars is key to understanding the early Universe. With new facilities such as the James Webb Space Telescope we may soon have the first observations of the earliest stellar populations, ... -
The Growth and Characterisation of Mn2Au Thin Films and Heterostructures
(Trinity College Dublin. School of Physics. Discipline of Physics, 2023)In this thesis, Mn2Au thin films and heterostructures are grown via molecular beam epitaxy. Mn2Au thin films are investigated on MgO (001) and Al2O3 (1102) substrates, and on Pt (111) seed layer grown on an Al2O3 (0001) ... -
The in-situ structural characterization of layered double hydroxide materials in catalytic and biological applications
(Trinity College Dublin. School of Physics. Discipline of Physics, 2019)The overall aim of this PhD research is to understand the physical behaviours of layered double hydroxide (LDH) nanomaterials in applied environments. Two aspects of LDH-based applications were studied. Firstly, the thermal ... -
LOFAR Observations of Shocks in the Solar Corona
(Trinity College Dublin. School of Physics. Discipline of Physics, 2022)The Sun can produce large-scale energetic events such as solar flares and coronal mass ejections, which can excite shock waves that propagate from the low solar atmosphere into interplanetary space. Such shocks can result ... -
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 ... -
Machine Learning for Condensed Matter Physics
(Trinity College Dublin. School of Physics. Discipline of Physics, 2021)This thesis is about the application of machine learning (ML) methods to a variety of problems in condensed matter physics. As condensed matter physics has large computational and experimental datasets readily available - ... -
Magnetic Characteristics of Sunspot Groups and their Role in Producing Adverse Space Weather
(Trinity College Dublin. School of Physics. Discipline of Physics, 2019)The energy that powers solar flares is known to come from magnetic energy stored in sunspot groups, but the precise conditions required and processes involved in energy release remain unclear. The likelihood of ... -
A Microscopy Study of PVD Grown Cu: Sample preparation, optimisation and in-situ analysis
(Trinity College Dublin. School of Physics. Discipline of Physics, 2019)A variety of sample preparation techniques have been developed and optimised for PVD grown Cu films and Cu NWs. These techniques include traditional cross-sectional preparation, plan-view preparation, site-specific ... -
Modelling and Monitoring Geomagnetically Induced Currents in Ireland
(Trinity College Dublin. School of Physics. Discipline of Physics, 2018)This thesis is the first detailed study of the effects of geomagnetic storms and geomagnetically induced currents (GICs) on the Irish power network. In order to better monitor geomagnetic storms in Ireland, a network of ... -
Optical Transmitters based on High-Order Surface Grating Lasers for Applications in Communication Systems
(Trinity College Dublin. School of Physics. Discipline of Physics, 2021)Optical communication is the forefront of modern communication systems and is unarguably the leading technology for information sharing and transmission of large amounts of data over longer distances with low latency. Since ... -
Piezoresistive Properties of 2D based Nanocomposites for Strain Sensing Applications
(Trinity College Dublin. School of Physics. Discipline of Physics, 2023)The superlative piezoresistive properties of nanomaterials and their composites have attracted great interest in the area of strain sensing. The field has grown exponentially over the past decade, benefiting from the ... -
Probing the Solar Corona at High Temporal and Spatial Resolution with the Low Frequency Array
(Trinity College Dublin. School of Physics. Discipline of Physics, 2022)The solar corona is the outermost layer of the Sun's atmosphere. Advancements in radio astronomy over the last 50 years have revealed a number of radio phenomena which occur in the corona each with different temporal and ... -
Quantum Control of Thermodynamic Processes in Semiconductors
(Trinity College Dublin. School of Physics. Discipline of Physics, 2022)In this thesis, we explore theoretically the thermodynamics of heat exchange in laser driven solid state systems. In particular, we focus on the heat exchanged between phonons and a semiconductor quantum dot exciton, driven ...
