Browsing Physics (Theses and Dissertations) by Title
Now showing items 21-40 of 410
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Atomic scale influences on the tribology of nano to meso-scale systems
(Trinity College (Dublin, Ireland). School of Physics, 2015)It has been known for many years that atomic scale effects can directly influence the tribological behaviour over a wide variety of contact sizes ranging from the nano-scale to macroscale. A newly developed load and depth ... -
Atomistic models and time-dependent simulations of spin dynamics in isolated and current-carrying systems
(Trinity College (Dublin, Ireland). School of Physics, 2012)Understanding and ultimately controlling the dynamics of electrons and their spins is an important aspect of spin-based electronics. Recent experimental advances open up new possibilities for probing spin dynamics with ... -
Atomistic simulations of spin-dynamics
(Trinity College (Dublin, Ireland). School of Physics, 2009)Current-induced spin-transfer torque effects form an exciting branch in the field of spintronics with a huge potential for applications. Magnetization dynamics phenomena like switching or GHz frequency precession in spin ... -
Cerium dioxide redox cycle for fuel production
(Trinity College (Dublin, Ireland). School of Physics, 2015)The following thesis covers a number of topics related to thermochemical fuel production using the CeO2 redox cycle. Chapter 1 gives an introduction to the topic, providing motivation, historical development and the main ... -
Characterisation and Manipulation of Transition Metal Dichalcogenides via Atomic Force Microscopy
(Trinity College Dublin. School of Physics. Discipline of Physics, 2022)Scanning probe microscopy (SPM) has revolutionised nanotechnology and allowed the study and manipulation of materials at the nanoscale, making it ideal for the study of solid-state physics and semiconductor technologies. ... -
Characterisation of laser produced plasmas
(Trinity College (Dublin, Ireland). School of Physics, 2006)This thesis describes the apphcation of planar Langmuir probes in laser produced plasmas. The influence of the ion flow on the probe behaviour and its effect on the measured plasma parameters has been investigated for ... -
Characterisation of materials under thermal and electrical stimuli using in-situ electron microscopy and MEMS technology
(Trinity College Dublin. School of Physics. Discipline of Physics, 2018)Abstract To incorporate nanomaterials into functional devices we need to fully understand the materials characteristics. This includes electrical, optical, mechanical and most important for us the thermal properties. The ... -
Characterization of single-mode laser and tunable laser array based on etched high order surface gratings
(Trinity College (Dublin, Ireland). School of Physics, 2015)Wavelength tunable single-mode semiconductor lasers play an essential role in modern optical communication systems. They are also rapidly replacing fixed-wavelength light sources in dense wavelength-division-multiplexing ... -
Charge and spin transport through organic semiconductors
(Trinity College (Dublin, Ireland). School of Physics, 2013)Over the past decade a great body of research has been devoted to the field of organic spintronics. This is primarily because of its potential to open new ways to cheap, low' weight, mechanically flexible, chemically inert ... -
Charging, doping and gating of a single dangling bond on a bare Si(100)-c(4x2) surface
(Trinity College (Dublin, Ireland). School of Physics, 2012)Despite the increasing interest in novel materials for the next generation of microelectronic devices, such as graphene and topological insulators, Si(100) surface is still the most important substrate for nano-device ... -
Compositional and Structural Characterisation of Polymer Photovoltaic Devices
Organic materials have enormous relevance in material science and have many advantages over materials such as metals, ceramics and glass due to their physical and mechanical properties. They offer a viable alternative to ...