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Theses and Dissertations (Physics): Recent submissions
Now showing items 61-80 of 194
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(University of Pretoria, 2019)Owing to its outstanding properties, zirconium nitride (ZrN) has been proposed as a possible candidate for inert matrix for transmutation of long-lived nuclear waste (plutonium and minor actinides) in fast nuclear reactors. ...
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(University of Pretoria, 2020)The aim of the study is to synthesize and characterize high quality undoped, Ce doped, Sm doped, Ce and Sm co-doped, and Ce and Al co-doped ZnO thin films and nanorods for use in optoelectronic devices, using the low-cost ...
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(University of Pretoria, 2020-01)Photoelectrochemical (PEC) water splitting, using sunlight and appropriate semiconductors to produce hydrogen (H2) fuel, is a promising route to solve both the production of clean H2 fuel and storage for solar energy. Owing ...
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(University of Pretoria, 2020)In modern nuclear reactors safety is improved by cladding the fuel kernel with chemical vapor deposited layers of pyrolytic carbon and silicon carbide. Amid these cladding layers SiC is the primary diffusion barrier of ...
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(University of Pretoria, 2020-12-14)Synthesis of activated carbon from biomass waste has recently become the main focus for the majority of the scientific community. In this study, activated carbons derived from peanut shell waste and its molybdenum-based ...
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(University of Pretoria, 2019)The goal of this master's research has been to ascertain whether Kerr/CFT correspondence techniques can be applied to black rings to better understand their CFT duals. Our e orts were largely focused on the hidden conformal ...
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(University of Pretoria, 2020)This study is focussed on synthesis and characterization of a novel sulphur-reduced graphene oxide/metal oxides composite for supercapacitor applications. Carbon-based materials have validated its capability in various ...
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(University of Pretoria, 2020-07-01)The demand for dry casks for extended storage of radioactive nuclear waste is driven by dearth of permanent repositories. Most of the dry cask storage system currently in use are made up of stainless steel which could ...
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(University of Pretoria, 2020)The N= 4 Super Yang-Mills theory in four dimensions admits deformations and the exactly marginal deformations of its SU(3) R-symmetry sub-sector are known as Leigh-Strassler. Leigh-Strassler deformations break the N= 4 ...
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(University of Pretoria, 2020)The analysis of scattering data is usually done by fitting the S-matrix at real experimental energies. An analytic continuation to complex and negative energies must then be performed to locate possible resonances and bound ...
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(University of Pretoria, 2020-05)The C*-algebra representation of a physical system provides an ideal backdrop for the study of bipartite entanglement, as a natural definition of separability emerges as a direct consequence of the non-abelian nature of ...
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(University of Pretoria, 2019)The semiconducting properties and wide bandgaps of some metal oxides have made them useful in sensing applications and printed electronics. Doping of common metal oxides to achieve p-type conductivity and the formation of ...
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(University of Pretoria, 2019)In this thesis,zirconium carbide (ZrC) layers were deposited on graphite substrates using a CVD reactor at temperatures ranging from 1250 °C to 1450 °C in steps of 50 °C. The deposited layers were characterised by XRD, ...
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(University of Pretoria, 2019)This study is in two parts. Both parts are geared towards the study of the effectiveness of glassy carbon as a good storage material was investigated. Firstly, 200 keV Xe ions were implanted into glassy carbon substrates ...
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(University of Pretoria, 2019-12-15)The effect of ion irradiation and annealing on the microstructure and migration behaviour of implanted Sr and Ag in SiC have been investigated. SiC is used as the main barrier for fission products in modern high temperature ...
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(University of Pretoria, 2019)The accumulation of various defects in the material structure during its exploitation poses the most important limit on its lifetime. One of the simplest and most effective methods for restoring the nominal properties of ...
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(University of Pretoria, 2019)Glassy carbon also known as vitreous carbon has a number of special properties making it a very interesting material with many applications. It is a non-graphitizing carbon which combines glassy and ceramic properties with ...
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(University of Pretoria, 2019)In my PhD study glassy carbon samples were implanted with 250 keV europium ions at room temperature and at 100 oC. The main purpose of my study was to study the diffusion properties of the europium in the glassy carbon. After ...
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(University of Pretoria, 2019)In this study, we investigated defects introduced in n-GaAs with different carrier densities by electron irradiation and sputter deposition by means of conventional deep level transient spectroscopy (DLTS) as well as high ...
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(University of Pretoria, 2019)Using a study of the connection between entanglement and quantum detailed balance as motivation, we define and study the concept of balance between two W -dynamical systems. Balance is defined in terms of certain correlated ...
Now showing items 61-80 of 194