Browsing Physics (Theses and Dissertations) by Title

Now showing items 179-198 of 417

    • Machine Learned Compact Kinetic Models for Combustion 

      Kelly, Mark (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 

      Nelson, James Patrick (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 - ...

    • Machine Learning for Novel Ternary Materials Discovery 

      Rossignol, Hugo Alexandre (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 ...

    • Machine-learning approaches for the enhancement of 2D and 3D electron microscopy data 

      Gambini, Laura (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 ...

    • Magnetic and Electronic Phenomena in Oxide Interfaces, Thin Films and Heterostructures 

      Porter, Stephen
      The miniaturisation and reduction of power consumption in modern integrated circuitry and active compo- nents such as sensors and memory demands the development of novel materials. These materials must not only have ...

    • Magnetic and transport properties of magnetite based nanostructures 

      Wu, Han-Chun (Trinity College (Dublin, Ireland). School of Physics, 2009)
      In this thesis, we investigate the magnetic and transport properties of magnetite based nanostructures. We in particular investigate the magnetization and surface Verwey transition of magnetite thin film, interlayer ...

    • Magnetic barcodes in molecular medicine 

      Byrne, Fiona N. (Trinity College (Dublin, Ireland). School of Physics, 2010)
      The need for faster and more sensitive diagnostic systems for the early detection of many life-threatening diseases is the driving force behind the work in this thesis. A lab-on-a-chip prototype device incorporating a ...

    • Magnetic Characteristics of Sunspot Groups and their Role in Producing Adverse Space Weather 

      MCCLOSKEY, AOIFE ELIZABETH (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 ...

    • Magnetic field effects on electrodeposition and the properties of electrodeposited nickel and nickel-copper 

      O'Reilly, Cora (Trinity College (Dublin, Ireland). School of Physics, 2004)
      The association of magnetism and electrodeposition is studied from two separate perspectives. Firstly the effect of an applied magnetic field on the deposition process and secondly the production of magnetic materials by ...

    • Magnetic field effects on the electrodeposition and electrodissolution of copper 

      Hinds, Gareth (Trinity College (Dublin, Ireland). School of Physics, 2001)
      The effect of a static magnetic field on the electrodeposition and electrodissolution of copper in acidified copper sulphate solution was investigated. The primary effect of the field was to increase the rate of mass ...

    • Magnetic field effects on water and aqueous solutions 

      Poulose, Sruthy (Trinity College Dublin. School of Physics. Discipline of Physics, 2022)
      Claims of magnetic field effects on water and their potential use in a microfluidic channel are explored. The pendant drop method is used to measure the surface tension, which is calculated from the shape of the drop. The ...

    • Magnetic Fields and Accretion Processes in Young Stars: A case study of the classical T Tauri star DK Tau 

      Nelissen, Marie (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) ...

    • Magnetic investigations of Mn-based and Mn-free potential half metals 

      Zhang, Rui (Trinity College Dublin. School of Physics. Discipline of Physics, 2022)
      This thesis is concerned with an unusual category of magnetically ordered material, the zero moments ferrimagnetic half metal, which has potential for applications in thin film memory and logic devices. The materials are ...

    • Magnetic semiconductors for spin electronics 

      Alaria, Jonathan (Trinity College (Dublin, Ireland). School of Physics, 2010)
      The development of the relatively new field of spin electronics is based on the possibility of manipulating the spin of the electron through a structure. If one aspect is to develop new device architecture to inject, ...

    • The Magnetic, Magneto-transport and Magneto-optical Properties of Mn4-xGaxN Thin Films 

      Prendeville, Lucy (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). ...

    • Magnetism in dilute magnetic oxides and related materials 

      Gunning, Robert Denis (Trinity College (Dublin, Ireland). School of Physics, 2007)
      The work in this thesis is focussed on the magnetic properties of dilute ferromagnetic semiconducting oxides and related materials. Since the first report of unexpected room temperature ferromagnetism in anatase and rutile ...

    • Magnetization processes and low frequency fluctuations in micromagnetic structures 

      Diao, Zhu (Trinity College (Dublin, Ireland). School of Physics, 2010)
      The study presented in this thesis is concerned with low frequency fluctuations in magnetic systems. Three different systems were investigated. The first system is (CoFe/Pt)n multilayers patterned into micrometer scale ...

    • Magnetization, Anomalous Hall Effect and Single Pulse Partial All-optical Switching in Amorphous Rare-earth Transition-metal Thin Films 

      Hu, Zexiang (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 ...

    • Manipulating atoms using scanning probe microscopy 

      Norris, Andrew Christopher (Trinity College (Dublin, Ireland). School of Physics, 2009)
      Manipulating species using Scanning Probe Microscopy (SPM) is an important discipline in the field of bottom-up fabrication, which facilitates nano-mechanics and electron dynamics investigations. Previous low temperature ...

    • Manipulation of Vanadium Oxide Characteristics for Applications: Resistive switching & Reflectance Anisotropy Spectroscopy 

      Murtagh, Oisín (Trinity College Dublin. School of Physics. Discipline of Physics, 2022)
      This thesis deals with the study of vanadium dioxide, vanadium pentoxide and the mixed 4+ and 5+ valence vanadium oxide phases, or Wadsley phases. Thin films (VO2) and single crystals (V2O5) are examined. Vanadium dioxide ...