Browsing Theoretical Physics by Title
Now showing items 1-20 of 25
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Calculations Of Phonons And Phonon Dispersion In Lifep Pnictide Superconductor
(2010-12-15)Not too long ago(2008),a new pnictide Superconductor free from arsenic was discovered –LiFeP. It belongs to the family of the so called ‘111’ type iron Superconductor. It has unique characteristics in its normal state which ...
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Control Of Non Linear Oscillations In Plasma Governed By A Van Der Pol Equation
(2011-11-19)This thesis deals with the control of non linear oscillations in plasma governed by a classical Van der Pol equation . The main interest devoted to such an investigation is that non linear oscillations in plasma is essential ...
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The Design of an On-Chip Silicon Photonic Diode
(2013-05-28)This work presents numerical calculation of electromagnetic waves in unidirectional on-chip silicon optical diodes. An original optical diode, designed by Wang et. al. [Opt. Express. 19, 26948-26955 (2011)], is based on ...
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Development Of A Correction Term For The Kinetic Energy Density Functional
(2014-12-15)Density functional theory (DFT) is a useful theoretical and computational tool for electronic structure calculations, which form the basis for the classification of materials into conductors, semiconductors or insulators. ...
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Effects Of Bending On The Optoelectronic Properties And Failure Mechanism In Organic Photovoltaics
(2011-12-15)This research investigates the effects of bending on the electrical, optical, structural and mechanical properties of flexible organic photovoltaic (OPV) cells. Bulk heterojunction organic solar cells were fabricated on ...
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Effects Of Stretching On Flexible Organic Electronic Structures
(2011-12-15)This work presents the responses of optical properties and mechanical failure of layers of stretchable organic electronic structures under tension using analytical, simulations, and experimental techniques. The interfacial ...
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Electro-Magnetic Duality, Magnetic monopoles and Topological Insulators
(2013-05-28)The Maxwell equations of electrodynamics acquire an additional symmetry if one assumes the existence of hypothetical particles-magnetic monopoles, carrying a magnetic charge. The additional internal symmetry is the ...
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Exergy Analysis Of Hybrid Solar Pv- Diesel / Biofuel System For Cogeneration (ELECTRCITY And Cold)
(2011-01-15)In this study, Flexy energy analysis taking exergy analysis and heat recovery into account on performance has been performed. The effects of wasting heat on exhaust gas temperature and cooling engine, is analysed in terms ...
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Femtosecond Laser Surface Texturing of Materials for Various Applications
(2013-04-23)Femtosecond lasers represent an electromagnetic field with field intensities approaching and even exceeding atomic binding field. When irradiated on a target, the material responses change from linear to nonlinear within ...
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Fundamentals of Laser Dynamics
(2013-04-23)The thesis presents the modeling and simulation of three types of lasers namely; Semiconductor laser, Solid state laser and CO2 laser. The rate equations were derived and simulated to examine the dynamic behaviour of the ...
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Influence of Molecular Polarizability on the Active Layer of Organic Photovoltaic Cells: A case study of Poly(3-hexylthiophene)
(2013-05-23)The complexity of the microstructure of the active layer in organic photo-voltaics (OPVs) poses a unique challenge in improving the efficiency of OPV devices. Molecular dynamics (MD) simulation provides a direct route ...
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Limiting Efficiency Of Perovskite Solar Cells
(2014-12-15)The power conversion efficiency of perovskite solar cells has risen from as low as 3.8% to as high as 19.3% in just five years with yet a projected value of over 20% in the next few years by experimentalists. Such a ...
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Modelling Of Contact And Adhesion At Interfaces In Bulk Heterojunction Solar Cells
(2011-12-15)The study of the structures and properties of organic materials for organic photovoltaic (OPV) applications and their interrelationships is a rapidly growing field of research, involving interdisciplinary efforts at the ...
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Molecular Dynamics Simulation Of Transport Of Encapsulated Drug Through A Lipid Bilayer
(2014-12-15)Most anticancer drugs are polar, cytotoxic and have complicated structures which cause difficulty in their penetration through the cell membrane. This presents a serious problem in chemotherapy. Is it possible to use carbon ...
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Nonlinear Effects In Flow In Porous Duct
(2013-05-28)In general, it is assumed in some non viscous flows that the flow velocity is constant at a cross-section. In this thesis, If we impose more realistic boundary conditions by, for example, introducing viscosity,and suction ...
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Performance Optimization Of Tin Halide Perovskite Solar Cells Via Numerical Simulation
(2014-12-15)Organic-inorganic hybrid perovskite solar cells have attracted great attention in the photovoltaic research community in recent years due to its ease of processing, low cost of production, superb light-harvesting ...
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Qualitative Modelling And Simulation Of Free Running Semiconductor Laser
(2011-11-23)The thesis presents the modelling and simulation of free running semiconductor laser. The rate equations which were derived on the basis of the fact that there must be a balance between carriers that undergo transition and ...
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Quantum Simulation Of A Transverse-Field Ising Model
(2010-12-15)A popular model that have been used to study ferromagnetism is the Ising Model which is an arrangement of spins along a particular direction and with discrete values of +1. 1-D Ising model doesn't show a phase transition ...
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Simulation Of Carbon Nanotube Growth
(2013-05-28)The basic understanding of the underlying techniques of growing Carbon Nanotubes (CNTs) with a specific chirality is still obscure and needs to be understood so as to properly harness its potentials. Using both Classical ...
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Simulation-Based Model Of Thermal Ablation Of Prostate Cancer Using High Intensity Focused Ultrasound
(2014-12-15)The use of High Intensity Focused Ultrasound (HIFU) in the medical treatment of cancer has attracted scientists and engineers with interest in achieving the most financially affordable but yet curative methods of curing ...