Browsing Doctoral Degrees (Physics) by Title
Now showing items 29-48 of 93
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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 ... -
Fe Mossbauer investigations in diamond, SiGe and Ge single crystals.
(2006)Abstract available in PDF file. -
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 ... -
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 ... -
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 ... -
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 ... -
The influence of rotating and locked magnetic islands on edge transport in Tokoloshe tokamak.
(1993)The turbulence and fluctuation induced transport in the edge plasma of the Tokoloshe tokamak was studied using a Langmuir probe array. In this thesis three separate experiments are presented, each of which examines a ... -
Invariant multipole theory of induced macroscopic fields in homogenous dielectrics.
(2013)A harmonic plane electromagnetic wave incident on a molecule distorts its charge distribution, thereby producing an infinite series of induced multipole moments expressed in terms of contributions that are due to the ... -
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 ... -
Investigation of conceptual and language difficulties affecting the understanding of several mechanics concepts among some African teachers and students.
(1998)The results of national examination in matric and universities showed that African students were performing very poorly in their studies and examinations in science and in physics in particular. The objective in this ... -
An investigation of the nature of Pc5 pulsations using SuperDARN and magnetometer data.
Pc5 pulsations are global magnetohydrodynamic events in the magnetosphere. We employed an Automated Pulsation Finder program to identify significant Pc5 pulsation events in SuperDARN data. Those events for which a resonance ... -
Laser applications and refractive properties of non-homogeneous gas distributions.
(1995)No abstract available. -
Linear and nonlinear electron-acoustic waves in plasmas with two electron components.
(1991)Measurements of broadband electrostatic wave emIssons in conjunction with particle distributions in the earth's magnetosphere, have provided motivation for a number of studies of waves in plasmas with two electron components. ... -
Linear and nonlinear fluctuations in electron-positron plasmas.
(2009)The behaviour of both small amplitude and arbitrary amplitude nonlinear electrostatic fluctuations are studied in electron-positron plasmas. The propagation characteristics of associated linear modes are also examined ... -
Linear and nonlinear waves in space plasmas.
(2014)The work presented in this thesis is about a study of some linear and nonlinear plasma waves. Firstly, a kinetic-theoretical approach is used to study ion Bernstein waves in an electron-proton plasma with a kappa velocity ... -
Mass spectrometry characterisation of laser produced products.
(1999)Mass spectrometers are analytical instruments that convert neutral atoms and molecules into gaseous ions and separate those ions according to the ratio of their mass to charge, m/z. The measurement is reported as a ... -
The measurement of electric quadrupole moments of gas molecules by induced birefringence.
(1993)Determining the electric quadrupole moments of gas molecules from measurements of birefringence induced in the gas by an applied electric field gradient is widely recognised as being the most direct experimental technique ... -
Measurement of the temperature dependence of the Buckingham effect (electric-field-gradient-induced birefringence) in gases
(2009)The aim of this research project was to assemble an apparatus to measure the electric quadrupole moments of gas molecules using the technique of electricfield- gradient-induced birefringence, or the Buckingham effect. ...