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The major part of this thesis describes experimental investigations of a deep level, labelled EL2 in GaAs. The methods employed include high resolution optical absorption, photoluminescence and two dimensional infra-red (IR) imaging. The exper[...]
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An account is given of an investigation into the growth and microstructure of ZnO layers on SiO₂ surfaces by the rf sputtering process. The formation of single crystal layer-like structures of ZnO is reported for the first time. Such material [...]
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An ultrasonic apparatus for measuring the elastic moduli of materials was designed . The difficulty in measuring shear-wave velocity using ultrasund was overcome by a transducer cell (patent application). Thus, both compressional and shear wav[...]
