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Theses and Dissertations (Physics): Recent submissions
Now showing items 121-140 of 194
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(University of Pretoria, 2015)Metrology is the science of measurement. It involves the formulation of the theoretical principles related to the definition of the International System of Units (Système International d Unités, SI) and the development ...
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(University of Pretoria, 2015)Electron cyclotron resonance ion sources and electron string ion sources play an important role in the production of multi-charged ion beams. We have used these devices to irradiate highly oriented pyrolytic graphite with ...
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(University of Pretoria, 2016)The electrical properties of ZnO and Schottky contacts to ZnO have been investigated using different techniques. Good rectifying Schottky contact has been fabricated on ZnO, after treating the samples with boiling hydrogen ...
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(University of Pretoria, 2015)The unifying theme within this work is the production of porous activated carbon (AC) materials from different carbon-containing precursors for electrochemical supercapacitors (ES) applications. The activated carbon-based ...
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(University of Pretoria, 2015)Silicon (Si) has various applications in different technological fields as a structural material or a semiconductor. Cobalt disilicide is an attractive silicide for contact with Si because it has favourable properties such ...
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(University of Pretoria, 2015)Metal deposition on Si has effects that may be detrimental to device operation such as diffusion, Fermi level pinning and silicide formation. Silicide formation is dependent on type of metal and temperature at which ...
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(University of Pretoria, 2016)Recent advances in computational technology and algorithms have made it feasible to accurately model the electronic structures of solids by means of density functional theory. The development of hybrid functionals have ...
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(University of Pretoria, 2016)The aim of this research is to develop a method for expanding the Jost functions as a Taylor-type power series on the complex angular momentum plane. From this method in conjunction with the Watson transformation, we ...
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(University of Pretoria, 2015)The diffusion and surface effects of several fission product elements implanted in SiC have been investigated. SiC is used as the main barrier for fission products in modern high temperature gas cooled reactors. An ...
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(University of Pretoria, 2015)The aim and objectives of this work are to optimize the synthesis of metal hydroxides - graphene foam (GF) composites using different configurations of graphene with a facile and environmentally friendly solvothermal ...
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(University of Pretoria, 2015)Several applications require the detection of terrestrial UV-C signatures. Efficiency, compactness, environmentally friendly and cost-effective requirements for UV-C–detectors resulted in a research interest in wide-bandgap ...
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(University of Pretoria, 2015)A method of extracting resonance parameters from scattering data is outlined for scattering that involves Coulomb interactions. This is done for single-channel scattering, as well as multi-channel scattering. Within the ...
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(University of Pretoria, 2015)A short-version ( 10 m) Small Angle Neutron Scattering (SANS) beam line facility was installed at the South African Nuclear Energy Corporation (Necsa)'s SAFARI-1 Research Reactor. This was in a way to prepare for ...
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(University of Pretoria, 2014)
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(University of Pretoria, 2014)A pebble bed modular reactor (PBMR) is a modern type high-temperature gas-cooled nuclear reactor (HTGR). The fuels of the PBMR are in the form of small multi-layered spheres called triple-coated isotropic (TRISO) particles. ...
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(University of Pretoria, 2014)The development of sensitive, selective, stable and suitable gas sensors for monitoring toxic gases in mineshafts and the environment in general, requires the basic understanding of the active sensing material. This ...
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(University of Pretoria, 2014)The origins and identity of process induced defects in semiconductors has proven to be a particularly difficult problem to solve. Germanium, a semiconductor once again at the forefront of device technology, has played a ...
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(University of Pretoria, 2015)Three-body hypernuclear nn and n systems are studied within the hyperspherical approach framework with local two-body S-wave potentials describing the nn, n and interactions using the Jost functions method. The ...
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(University of Pretoria, 2014)The recent increase in seismic activity in the Central Rand Basin of South Africa was investigated using two different approaches. The closure of mines throughout the basin has left a large underground void behind that has ...
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(University of Pretoria, 2014)Silicon Carbide is a wide bandgap semiconductor with excellent physical and opto-electrical properties. Among these excellent properties are its radiation hardness, high temperature operation and high electric field ...
Now showing items 121-140 of 194