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MECHANICAL AND ELECTRONIC PROPERTIES OF CUBIC BORON NITRIDE AND CARBON BORON NITRIDE: A QUANTUM MONTE CARLO STUDY
(University of Eldoret, 2013)Carbon Boron Nitride (BC2N) has attracted a lot of attention in research and industry since it was first synthesized and continues to maintain this interest due to the fascinating mechanical and electronic properties ... -
MID-GAP STATES IN DEFECTIVE ANATASE TiO2 : A DENSITY FUNCTIONAL THEORY STUDY PLUS A HUBBARD TERM (DFT+U)
(University of Eldoret, 2016)Motivated by the performance of reduced Titania in various important applications including photo-catalysis, photo-voltaics and CO2 reduction in hydrocarbon fuels, a systematic study of the structural properties and the ... -
MODELING OF RING RESONATOR AS AN OPTICAL FILTER USING MEEP SOFTWARE
(University of Eldoret, 2016)Ring resonators are key components in modern optical networks. Their small size allows high density integration in optical photonic circuits due to the use of high index contrast. Ring resonator filters based Optical Filters ... -
MODELLING AND OPTIMIZATION OF SUBTHRESHOLD LEAKAGE CURRENT IN LOW-POWER, SILICON-BASED, COMPLEMENTARY METAL OXIDE SEMICONDUCTOR (CMOS) DEVICES
(University of Eldoret, 2019)The trend of process scaling for CMOS technology has made subthreshold leakage reduction a growing concern for submicron circuit designers. Power consumption has become a principle design consideration as device sizes ... -
MODELLING OF OPTICAL FIBRE SENSOR BASED ON STIMULATEDBRILLOUIN SCATTERING
(University of Eldoret, 2014)Distributed fibre optic sensing presents unique features that have no match in conventional sensing techniques. The ability to measure temperatures and strain at thousands of points along a single mode fibre is ... -
A MODIFIED NUCLEAR MODEL FOR BINDING ENERGY OF NUCLEI AND THE ISLAND OF STABILITY
(University of Eldoret, 2021)A new nuclear model of quantifying binding energy of nuclei is proposed. The nucleus is assumed to be composed of two regions; the inner core region and surface region. The inner core is assumed to be composed of Z ... -
NUCLEATION OF SUPERCONDUCTING VORTICES BY EXCITING ACOUSTIC STANDING WAVES IN A TYPE - II SUPERCONDUCTOR
(University of Eldoret, 2014)Superconductivity nucleation phenomenon in superconductors under an applied magnetic field close to the upper critical field HC3 has been studied by many authors. Physicists Saint-James and De Gennes were the first to study ... -
NUCLEON-NUCLEON INTERACTION IN RHENIUM- 186Re.
(University of Eldoret, 2014)Properties of nuclear matter and large finite nuclei have been studied using different types of nucleon-nucleon (NN) interaction potential. In this study, focus is on the thermodynamic properties of a large nucleus of ... -
OPTICAL AND STRUCTURAL STUDIES OF ANODIC COPPER PIGMENTED TITANIUM PHOTOCATALYST
(University of Eldoret, 2020)Thousands of lives have been lost worldwide due to the shortage of clean water resources caused by waste water disposal challenges from manufacturing and processing industries, population growth and long-term droughts. ... -
OPTICAL NOISE PERFORMANCE IN SMF-REACH AND SMF-REDUCED SLOPE FOR RAMAN FIBRE AMPLIFICATION USING DIFFERENT PUMPING TECHNIQUES
(2016-05-19)Signal amplification in optical fibres during transmission has become one of the techniques in improving capacity and reach in telecommunication networks. Fibre Raman amplifiers (FRAs) are currently being adopted in many ... -
OPTICAL SIGNAL TRANSMISSION IN NEW GENERATION FIBRES USING ADVANCED MODULATION FORMATS AND VCSEL TRANSMITER
(University of Eldoret, 2021)In the current society, the data transmitted using the internet is tremendous and has been occasioned by the rapid broadening of communication infrastructure. The use of traditional NRZ format is becoming less applicable ... -
OPTIMAL DESIGN FOR SECOND-DEGREE KRONECKER MODEL MIXTURE EXPERIMENTS FOR MAXIMAL PARAMETER SUBSYSTEM
(University of Eldoret, 2014)Products in many disciplines frequently involve blending two or more ingredients together. The design factors in a mixture experiment are the proportions of the components of a blend, and the response variables vary ... -
PERFORMANCE OF VCSEL AT 10 Gb/s IN G.655 AND G.652 SSMF IN THE 1310 nm AND 1550 nm TRANSMISSION WINDOWS
(University of Eldoret, 2017)Vertical cavity surface emitting lasers (VCSELs) are now major optical sources in optical communication and technology. The VCSEL-based transmission systems satisfy the next generation optical fibre access networks ... -
PHASE TRANSITION IN SUPERCONDUCTORS
(University of Eldoret, 2015)Superconductivity is the disappearance of DC electrical resistance in a material when it is cooled to a certain critical temperature, when a material changes from normal state to superconducting state when it is cooled ... -
PROPERTIES OF A MIXTURE OF BOSONS AND FERMIONS AT ZERO KELVIN TEMPERATURE
(University of Eldoret, 2016)Quantum materials reveal unexpected and exotic behavour when subjected to extreme conditions such as low temperature and/or high pressure. Ultra cold gases provide a very powerful tool for simulation and study of ... -
PROPERTIES OF CESIUM IODIDEWITH INTRINSIC POINT DEFECTS : A DENSITY FUNCTIONAL THEORY STUDY
(University of Eldoret, 2016)Cesium Iodide is one of the fastest scintillators with a very short decay time of 16ns. This has made the material to attract a lot of attention in research and imaging industry especially regarding how to make it a ... -
ROLE OF LONG – RANGE ELECTRON - PHONON AND COULOMB INTERACTIONS IN HIGH - TC CUPRATE SUPERCONDUCTORS
(University of Eldoret, 2016)Superconductivity is the disappearance of the electrical resistance of certain materials at certain critical temperatures called transition temperatures. This phenomenon was discovered in 1911 and is one of the most ... -
ROTATING OPTICAL BEAMS: DIGITAL HOLOGRAPHIC GENERATION, PROPERTIES AND SELF-RECONSTRUCTION DYNAMICS
(2016-05-19)This thesis reports on an experimental investigation of rotating optical beams. Superpositions of higher-order Bessel beams with rotating intensity profiles were generated using a digital holographic experimental technique ... -
ROTATING OPTICAL BEAMS: DIGITAL HOLOGRAPHIC GENERATION, PROPERTIES AND SELF-RECONSTRUCTION DYNAMICS
(University of Eldoret, 2013)This thesis reports on an experimental investigation of rotating optical beams. Superpositions of higher-order Bessel beams with rotating intensity profiles were generated using a digital holographic experimental technique ... -
SIMULATION OF NOT-, AND- AND OR- OPTICAL GATES USING WIDEBAND TRAVELLING WAVE SEMICONDUCTOR OPTICAL AMPLIFIER
(University of Eldoret, 2016)All optical gates have received practical applications in the recent past. This is due to its high demand in optical communication networks in this age of Information Technology (IT). They have assisted in performance of ...
