This thesis describes an investigation into the potential of coupled-cavity semiconductor lasers for bio-sensing applications. This has involved the design and development of a fabrication process for a novel micro-fluidic coupled-cavity laser sensor. The efficiency of the etche…
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This dissertation is theoretical investigation of the resonant acousto-optic effect in ionic crystals and thin metal foils. The optical properties of these types of materials, in the presence of coherent acoustic pump excitation, are numerically modelled and compared with analyt…
Investigations have been made into the use of a computer based simulation technique (Monte Carlo (MC)) to ionising radiation transport in order to verify the doses delivered during linear accelerator based stereotactic radiotherapy and radiosurgery. Due to the complex nature of …
In this thesis we investigate the development and use of numerical methods to study astrophysical problems, particularly the formation and evolution of objects via gravitational instability in circumstellar discs. We begin with a comprehensive overview of the development, valida…
Gravitational waves, predicted by the theory of General Relativity, are fluctuations in the curvature of space-time which arise from the asymmetric acceleration of mass. While gravitational waves have yet to be detected directly, measurements of the inspiral rate of a binary pul…
A search for the supersymmetric process of gluino mediated sbottom produc- tion is presented. This search was carried out using 2.05 fb−1 of 7 TeV proton- proton collisions in the ATLAS detector at the LHC. The data used were collected during the 2011 ATLAS run. In the search, s…
T2K is a long baseline neutrino oscillation experiment designed to measure the θ23 and θ13 mixing angles to high precision using νμ disappearance and νe appearance respectively. A major component of the T2K near detector is the electromagnetic calorimeter; the construction, comm…
The research described in this doctoral thesis involves the experimental investigation of heteroepitaxial growth at quasicrystal surfaces. The aim is to further extend fundamental surface growth studies to such complex intermetallics and to form high quality, single-component qu…
In the current work a detailed spectroscopic investigations of the gamma-decays from the excited states of the rare-earth nucleus 159Er has been performed to study the structural properties up to possible ultrahigh spins. The nucleus of 159Er had been populated by the reaction 1…
A spectroscopic study of excited states in ²⁵²No was carried out to gain experimental evidence of the energies, orderings and assignments for the single particle levels in the region around the deformed shell gaps at N = 152 and Z = 100. Some of these energy levels are of partic…
Research on Bose Einstein condensates has over the past few years developed into an interesting field of physics. Current research aims for the creation of working quantum simulators which may be able to help explain and understand condensed matter physics phenomena which as yet…
The reduced electric field dependence of a series of twelve saturated alcohols was investigated with a proton transfer reaction mass spectrometer, PTR-MS. Fragmentation reactions were observed for all but one compound and the dependence of this fragmentation was recorded as a fu…
A cold atom experiment can be used to simulate analogous solid-state systems. This provides the bene�t of having a high degree of control over the system parameters and allowing direct detection methods. Disordered transport is one example of where such a system has much to o�er…
In this thesis I report experimental studies toward developing versatile, compact, and reliable ultrafast sources in the 1.5 micron wavelength region, and their power scalability. The first part of the thesis reports on the development of a stable all-fiberized wavelength-tunabl…
In this thesis, we describe extensive experiments on the classification of emotions from speech using acoustic features. This area of research has important applications in human computer interaction. We have thoroughly reviewed the current literature and present our results on …
We show our progress in setting up a three grating near-field Talbot-Lau interferometer (TLI) for large molecules such as C60. The TLI is the preferred tool for showing the wave nature of large particles, as it accepts beams of poor spatial coherence and because of its scaling p…
Providing antireflection in the visible spectrum is useful for a number of applications. Solar cells, LCD screens, optical lenses and stealth surfaces are a few examples of applications that can benefit from antireflection. In this work, maximizing the performance of a biomimeti…
Light localization plays an important role in developing high resolution imaging and precision technologies in nanophotonics. In order to create and control nanoscale light localizations, this thesis has investigated into two research topics with different types of nanophotonic …
This thesis reports on the development of new types of nanoscale optical light sources driven by free-electrons and on the investigation of the underpinning physical phenomena. It is focused on three types of nanoscale light sources with increasing degree of complexity: a nanosc…