Doctoral Degrees (Physics)
Recent Submissions
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Characterisation of quantum channels in plasmonic metamaterials and bulk optical systems.
(2018)Quantum channels are key to our understanding of how quantum information can be processed and transmitted. In this respect, over the past decade light has become an important carrier of quantum information. More recently, ... -
Mathematical and numerical analysis of the discrete fragmentation coagulation equation with growth, decay and sedimentation.
(2018)The importance and need for solar energy man and living organisms cannot be overemphasised. It is therefore necessary to estimate the amount of solar radiation incident on South African surfaces and how it can be harnessed ... -
Molecular sensors for evaluating substandard anti-retroviral medication using surface-enhanced raman spectroscopy.
(2023)Africa has the highest number of people living with HIV and AIDS, with South Africa housing the largest Anti-retroviral treatment (ART) program in the world. In addition, the continent is troubled by the continuing ... -
Application of machine learning techniques to the description of open quantum systems.
(2023)This work focuses on using classical machine learning (ML) models to study the quantum dynamics of excitation energy transfer (EET) within strongly coupled open quantum systems relevant to light harvesting complexes ... -
The effects of traveling ionospheric disturbances on SuperDARN near range echoes.
(2022)Traveling Ionospheric Disturbances (TIDs) and Near Range Echoes (NREs) are both natural phenomena observed by SuperDARN High Frequency (HF) radars. This study presents for the first time observations of NREs in the lower ... -
The effect of metal nano-composites on the performance of thin film organic solar cells.
(2021)This thesis examines the role of plasmonic nano-particles in the fabrication of thin film organic solar cells (OSCs). Organic solar cells are made up of conducting polymers blend that are formed as ultrathin layers (a few ... -
Plasmon as a mechanism to improve performance of bulk-heterojunction organic solar cells.
(2022)Narrow optical absorption band of fullerene based organic photovoltaics (OPVs) is one of the challenges to produce efficient polymer based solar panels that compete with inorganic counter part. There have been efforts ... -
High-resolution geophysical imaging and characterization of severe landslides vicinities at South-Eastern Nigeria for uni-vario-seasonal degradation monitoring and civil engineering remediation.
(2021)This research work used high-resolution geophysical methods to explore the near surface of severe gully-erosion sites. The erosion that mesmerized the environment as landslides is the major landscaping challenge facing ... -
An investigation into the radioprotective potential of Costus afer and Drymaria cordata extracts on whole-body irradiated mice.
(2021)The need for effective and non-toxic radioprotectors has shifted researchers' attention to plants and natural products as an alternative to synthetic compounds. This study investigated the radioprotective potential of ... -
The effect of metal nano-composites on the performance of thin film organic solar cells.
(2021)This thesis examines the role of plasmonic nano-particles in the fabrication of thin film organic solar cells (OSCs). Organic solar cells are made up of conducting polymers blend that are formed as ultrathin layers (a few ... -
Baseline demand responsiveness framework for the conventional grid through appliance scheduling by evolutionary metaheuristics.
(2020)A major problem of many energy environments nowadays, is an obsolete and highly inefficient electricity supply system, the Conventional Grid (CG), characterized by a high peak to average ratio, out of an uncontrollable ... -
Non-linear multivariate analysis of the global solar radiation received across five cities in South Africa.
(2019)South Africa is considered one of the most developed countries in Africa, however with more than 80% of its electricity being generated from coal, this country is considered one of the highest contributors to greenhouse ... -
Fabrication and characterization of solution processed thin film solar cells.
(2018)This research focused on developing new organic and inorganic semiconductor materials and techniques for use in design and fabrication of organic photovoltaic solar cells. Despite OPVs having benefitted from material ... -
Synthesis, structural and magnetic characterization of spinel nanoparticle ferrites with applications for electrochemical sensors.
(2015)Abstract available in PDF file. -
Quantum machine learning for supervised pattern recognition.
(2017)Humans are experts at recognising patterns in past experience and applying them to new tasks. For example, after seeing pictures of a face we can usually tell if another image contains the same person or not. Machine ...
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