Department of Physics: Recent submissions
Now showing items 41-60 ya 75
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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 ... -
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 ... -
THEORETICAL DETERMINATION OF SPECIFIC HEAT AND CRITICAL TEMPERATURE OF HIGH-TC CUPRATE SUPERCONDUCTORS BASED ON INTRALAYER AND INTERLAYER INTERACTIONS
(University of Eldoret, 2013)The role of attractive interlayer and intralayer interactions in layered high-Tc Cuprate superconductors was investigated using a two-layer Hamiltonian. The Hamiltonian was formulated and diagonalized using Bogoliubov ... -
MODELLING AND OPTIMIZATION OF SUBTHRESHOLD LEAKAGE CURRENT IN LOW-POWER, SILICON-BASED, COMPLEMENTARY METAL OXIDE SEMICONDUCTOR (CMOS) DEVICES
(International Journal of Engineering Applied Sciences and Technology, 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 ... -
THEORETICAL ANALYSIS OF A SOLAR AIR COLLECTOR WITH A RECTANGULAR AIR-DUCT PROFILE
(University of Eldoret, 2012)Any solar energy conversion system requires proper designing and sizing in order for it to be cost effective with respect to energy production under the prevailing climatic conditions and initial cost. Modelling and ... -
A DENSITY FUNCTIONAL THEORY STUDY OF COPPER OXIDES NANOWIRES AND CLUSTERS ON ANATASE TiO2 (101) SURFACE FOR PHOTOCATALYTIC WATER SPLITTING
(University of Eldoret, 2018)Copper oxides deposited at titania surfaces have a bene cial e ect on the photocatalytic activity of TiO2, particularly water splitting. However, the role of copper oxides and mechanisms of enhancement remains to be ... -
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 ... -
ALGEBRA OF COUPLED ELECTRONS IN THE CO-EXISTENCE OF SUPERCONDUTIVITY AND FERROMAGNETISM
(University of Eldoret, 2013)Superconductivity is a phenomenon in which the d.c electrical resistance of a material vanishes completely and instantly rather than gradually when it is cooled below a certain temperature called the superconducting ... -
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 ... -
FABRICATION AND CALIBRATION OF LOW COST CAPACITIVE SOIL HUMIDITY SENSOR
(University of Eldoret, 2013)Soil humidity is critical in crop production and its control is essential to water conservation. The knowledge of soil humidity to majority of farmers in Kenya is based on effects of weather on crops and soil texture. ... -
EFFECTS OF COULOMB AND PAIRING INTERACTIONS BETWEEN NUCLEONS IN DETERMINING NUCLEAR STABILITY OF FINITE NUCLEI
(University of Eldoret, 2021)From time to time, several nuclear models have been proposed by various research groups to explain the properties of finite nuclei and large nuclear systems in nuclear physics and astrophysics. However, no single model ... -
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. ... -
EFFECTS OF TEMPERATURE ON METAL OXIDE SEMICONDUCTOR FIELD EFFECT TRANSISTOR CHARACTERISTICS
(University of Eldoret, 2013)The metal-oxide-semiconductor field-effect transistor (MOSFET) is a transistor used for amplifying and switching on circuits. In this study, the MOSFET parameters were computationally modeled, analysed and presented. The ... -
STIMULATED BRILLOUIN SCATTERING (SBS) CHARACTERIZATION IN MODERN FIBRES AND A TECHNIQUE OF SLOW LIGHT GENERATION
(University of Eldoret, 2015)Stimulated Brillouin scattering (SBS) is one of the recent technology that is being developed to generate slow light in optical fibres. It is one of the simplest and most applicable methods of slow light production. Slow ... -
Impact of Temperature and Relative Humidity on PMD in Directly Buried Optical Fiber Cables in Semi-Arid and Tropical Highlands in Kenya
(Hindawi International Journal of Optics, 2019)The telecommunication industry has implemented fibre deployment guidelines that reliably safeguard cable health during installation in the field. While installed fibre cables remain buried in the field, temperature and ... -
Correlation between Nucleon-Nucleon Interaction, Pairing Energy Gap and Phase Shift for Identical Nucleons in Nuclear Systems
(Journal of High Energy Physics, Gravitation and Cosmology, 2019)Assuming some known nucleon-nucleon interactions, and using the relations between phase shift δ and nucleon-nucleon interaction potential()Vr; the relation between nucleon-nucleon interaction and scattering length ... -
Hardness characterization parameters of Niobium Carbide and Niobium Nitride: A first principles study
(Elsevier, 2019)Niobium carbides and nitrides have been proposed as potential candidates for hardness and related applications, however, comprehensive studies are still needed for better understanding that may pave way for their ... -
Ab-initio Simulations ofCopper Oxide Nanowires and Clusters on TiO2(101)Anatase Surface
(Journal of Physical Chemistry, 2017)Copper oxides deposited at titania surfaces have a beneficial effect on the photocatalytic activity of TiO2, but their role is not fully understood. In this work, possible nanostructures of copper oxide on TiO2 (101) have ... -
Correlation between Nucleon-Nucleon Interaction, Pairing Energy Gap and Phase Shift for Identical Nucleons in Nuclear Systems
(Journal of High Energy Physics, Gravitation and Cosmology, 2019)Assuming some known nucleon-nucleon interactions, and using the relations between phase shift δ and nucleon-nucleon interaction potential()Vr; the relation between nucleon-nucleon interaction and scattering length ... -
20 G bps Pulse Amplitude Modulation (PAM) Format for Capacity Upgrade in Optical Communications
(American Journal of Optics and Photonics., 2019)In the fast growing society, communication is broadening so rapidly such that internet users need to access information rapidly and amount of data flowing through internet is very huge. Various ...
