A time-resolved ellipsometry technique has been developed using a home- built and calibrated ellipsometer. The design and optimisation of the ellip- someter has been chosen carefully to study low absorption materials. The ellipsometric angles (Ψ and ∆) are measured in good agreement with commercial ellipsometry equipment. An optical model is constr...
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The recent interest in developing highly controllable quantum bits (qubits) based on superconducting circuits makes it necessary to get a deeper understanding of the physics of small Josephson junctions. Such devices have to be wisely engineered and well isolated from the noisy environment to observe non-classical physics. In this thesis, a real-ti...
Active microwave devices have proved to be a promising approach to compact, reliable, and efficient sources of radiation for many emerging systems application at terahertz (THz) frequencies. These devices consist of a tunnelling diode with a negative-differential-resistance region (NOR) to overcome the losses in a passive tuning circuit. Experiment...
United Kingdom
United Kingdom
United Kingdom
Gas-solid two-phase flows are widely seen in many industrial processes. A good example of these is the pneumatically conveyed pulverised fuel (coal/biomass) flow in the power generation industry. In order to achieve efficient operation of a power plant it is desirable to monitor the physical characteristics of fuel particles. As one of the most imp...
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A series of metal-boride compounds have been studied using density functional theory with the goal of discovering and designing new superconductors with the highest possible superconducting critical temperature (T c). The materials design process involves predicting crystal structures using an evolutionary algorithm followed. by the calculation of ...
