Browsing School of Chemistry and Physics by Title
Now showing items 221-240 of 700
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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 ... -
Fabrication of affordable and sustainable solar cells using NiO/TiO2 P-N heterojunction.
(Hindawi., 2018)The need for affordable, clean, efficient, and sustainable solar cells informed this study. Metal oxide TiO²/NiO heterojunction solar cells were fabricated using the spray pyrolysis technique. The optoelectronic properties ... -
Fabrication of dye-sensitized solar cells using heteroatom-doped reduced graphene oxide, and metal oxide-based nanocomposites as a counter electrode or photoanode.
(2021)Recent advancements in technology have led to an exponential increase in global energy demand. Non-renewable energy sources have been widely used to meet this demand; however, they are prone to depletion ... -
Fabrication of high efficacy selective solar absobers.
(2012)High efficiency tandem selective solar absorber materials of carbon in nickel oxide (C-NiO) composite were fabricated on an aluminium substrate using a simple and cost effective sol-gel process. The process involved ... -
Fe Mossbauer investigations in diamond, SiGe and Ge single crystals.
(2006)Abstract available in PDF file. -
Feasibility study of ionospheric tomography using HF radar
(2010-09-09)This thesis gives an outline of the ionosphere and studies that were conducted to investigate -
Field and model studies of the nearshore circulation.
(1967)Investigations into the characteristics and underlying mechanism of the circulation of water near the shore are reported. The two main types of circulation, one a cellular system resulting from Haves propagated nearly ... -
Figure rotation of dark halos in cold dark matter simulations.
(2005)We have simulated structure formation on cosmological-scales using N-body simulations run on the University of KwaZulu-Natal's cluster of computers and have used these simulations to investigate aspects of galaxy evolution. ... -
First principles quantum mechanical studies of iridium : a focus on bulk and surface properties.
(2003)Recent high-pressure experiments on iridium show a transition to a 14 atomic layer superlattice structure. Since iridium has a high bulk modulus, it is used in many high-pressure applications, for instance as a gasket for ... -
The fluorescent tube-lamp integrating chamber.
(2008)The objective of this project is to design a facility that will characterize the electrical and optical properties of both tubular and the more recent compact fluorescent tubes. The first stage of this project, which is ... -
Formulation of the anisotropic coarsening theory and applications to the liquid-phase sintering of Si3N4.
(2002)We have developed a new coarsening theory that more completely describes grain growth of a system of anisotropic particles such as completely faceted crystals by Ostwald ripening. Our model takes the anisotropy of surface ... -
Free-space communication in quantum key distribution.
(2015)Quantum cryptography permits the sharing of a secret key hence information between authorized parties such that an unauthorized party is unable to obtain any useful information. A quantum and a classical authenticated ... -
The functionalisation of thenyl carbamates.
(1996)The carbamate functionality has always been associated with a major class of biocides because of its ability to function as an inhibitor of the enzyme acetylcholinetransferase. However, carbamates are not limited to ... -
Generalisation of theory and algorithms for the configurational temperature Nosé–Hoover thermostat.
(2015)In this dissertation we reformulate the configurational temperature Nos`e-Hoover thermostat proposed by Braga and Travis (C. Braga and K.P. Travis, 2005), using the antisymmetric matrix formalism found in (A. Sergi, ... -
Generation and detection of bessel beams.
(2015)In this dissertation we study the properties of Bessel-Gauss beams. Bessel-Gauss beams are created by the interference of plane waves lying on a cone, and have unique properties: they propagate without spreading and ... -
Globomycin: an interesting antimicrobial depsipeptide discovering new active analogues.
(2019)In South Africa and other African countries infectious diseases are reported to be the main health problem and results into death. This is the reason why the pharmaceutical industry has tried to develop new antibiotics to ... -
A green, solvent-free one-pot synthesis of disubstituted quinolines via A3-coupling using 1 mol% FeCl3.
(2016)Quinoline derivatives are important compounds due to their broad range of applications in medicinal, synthetic and industrial chemistry. However, current synthetic techniques such as the classical Skraup, Döebner-Miller, ... -
Growth and physical-chemical properties of carbon nanotube arrays for energy conversion devices.
(2015)Energy demand has been on the increase globally whilst there has been continuous depletion of energy sources. This has prompted investigative research towards sustainable energy through the synthesis of carbon nanotubes ... -
Heterogenisation of selective ethylene tetramerisation catalysts.
(2010)The aim of the study was to heterogenise existing tetramerisation catalysts by supporting the bis(diphenylphosphino)amine ligands on polymer. The polymer of choice was Merrifield’s resin which was functionalized to enable ...