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Effects of nano-second pulsed electric fields (nsPEF) on human prostate cancer cell line - LNCaP
(University of Missouri--Columbia, 2008)
The effects of Pulsed Electric Fields have been a period of study since past few decades, which was mainly on the electroporation, bacterial decontamination and biofouling. But the development of technology to produce nanosecond duration pulsed...
Effects of nano-second pulsed electric fields on human breast cancer cell line-MCF7
(University of Missouri--Columbia, 2011)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] Effects of nanosecond pulsed electric fields on the human breast cancer cell line MCF-7 have been investigated for changes in cell number, DNA concentration, DNA synthesis rate...
Characterizing carrier transport in silicon thin film metal semiconductor metal structures
(University of Missouri--Columbia, 2011)
with the photo-generation rate, conduction current density, and electric field. It was observed that the I-V characteristics of the scaled down structures depend greatly on the lateral and transverse electric field components in the channel, which eventually...
Design and analysis of a metamaterial with high refractive index at dual band frequencies
(University of Missouri--Columbia, 2012)
five unit-cells with a surface area of 250 um by 250 um and a thickness of 5 um. Each cell has metallic structures embedded in a polyimide substrate. The return loss (S-parameter) analysis show two strong electric responses at two frequency ranges...
Comparative study of ballistic transport in Si and GaAs using non equilibrium Green's function formalism
(University of Missouri--Columbia, 2012)
conceptual and computational framework for handling quantum transport in nano devices, and includes elastic scattering and strong correlation effects at atomic level. The comparative study of results obtained for Si and GaAs show that GaAs is not a better...
Maximizing terahertz pulse amplitude from low temperature gallium arsenide photo conductive semiconductor switch
(University of Missouri--Columbia, 2011)
and then for antenna analysis in two separate software. Results show that the 50 X 50 [mu]m PCSS material produces a central frequency of 1.75 Terahertz, and a pulse amplitude of approximately 0.22 A at an optimum bias voltage of 1100 Volts. The PCSS was illuminated...
Design and application of conformal patch antenna for near-field imaging and object detection
(University of Missouri--Columbia, 2013)
extensive data collection and processing computations. This technique is based on the analysis of the transmission and reflection signal from the targeted object. The antenna used in the scanning involves three operational modes, which include: planar scan...
Effects of front and bottom texturings on gallium arsenide solar cell characteristics
(University of Missouri--Columbia, 2012)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] The Gallium Arsenide solar cells are of particular interest in many applications due to its advantages over silicon. Its high absorptivity requires a ...
Comparison of substrate conditions in low-temperature gallium arsenide and semi-insulating gallium arsenide during terahertz pulse generation
(University of Missouri--Columbia, 2011)
The use of GaAs photoconductive semiconductor switches (PCSS) for generating THz radiation is well known. Both semi-insulating (SI) and Low-temperature (LT) grown Gallium Arsenide (GaAs) have been used. In this research ...
Wearable energy-harvesting micro devices /
(University of Missouri--Columbia, 2016)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] The focus of this dissertation is wearable energy-harvesting mircro devices. They are designed to harvest energy from the surrounding environment to ...
Design, simulation, and analysis of reconfigurable antennas in GHz regime
(University of Missouri--Columbia, 2013)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] This research focuses on the design and analysis of a reconfigurable antenna where the radiation pattern and its characteristics are altered in each ...
Design and analysis of CPW-fed compact planar antennas for ultra wideband communication systems
(University of Missouri--Columbia, 2016)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] In this research, three new designs of planar compact ultra-wideband (UWB) antennas have been studied, simulated, and experimentally measured. Their ...
Optimizing antenna gain with a metamaterial filter
(University of Missouri--Columbia, 2011)
Metamaterials are man-made structures, usually designed by placing electromagnetic resonators, such as split ring resonators (SRRs), in a periodic array. Metamaterials also exhibit lensing properties, and, when placed next ...
Performance analysis of high power photoconductive switch at elevated temperature
(University of Missouri--Columbia, 2005)
This project deals with the analysis of high power radio frequency effects on a non-linear opposed contact GaAs photoconductive semiconductor switch, used in high power microwave generation. Specifically, effects of heating ...
A TEM cell design to study electromagnetic radiation exposure from cellular phones
(University of Missouri--Columbia, 2008)
of the forward and backward travelling mode excitation and the input impedance of the signal leader were analyzed in the study. It showed good agreement with known results from other experiments and lab simulations. The electric field distribution was studied...
Optimization of charge collection efficiency in MSM photodetector
(University of Missouri--Columbia, 2005)
. Plots of the electric field amplitude as it propagates from the constricted grating region to a larger crosssection in the active region have been studied for comparison. This study shows that a hatched top cone shaped grating allows for maximum energy...
Charge collection mechanisms in a sub-micron grated MSM photodector: field analysis
(University of Missouri--Columbia, 2005)
Enhanced charge collection mechanisms due to sub-micron wall-like silicon structures on the active surface of a metal-semiconductor-metal (MSM) photodetector were studied through the analysis of transmitted electromagnetic ...
The study of single phase diode rectifiers with high power factor and low total harmonic distortion
(University of Missouri--Columbia, 2008)
The mains current in an ac/dc converter contains periodic current pulses due to the action of rectifier and output filter capacitor. The high current peaks cause harmonic distortion of the supply current and low power ...
Electromagnetic effects on soybeans
(University of Missouri--Columbia, 2007)
In this study we have exposed different varieties of soybean seeds to electromagnetic (EM) radiation at a frequency other than that of light. The objective was to determine changes in the germination rate, if any, under ...
Silicon carbide as a photoconductive switch material for high power applications
(University of Missouri--Columbia, 2006)
This research work discusses the effort at the Electrical and computer engineering (ECE) department at the University of Missouri Columbia (UMC) in developing this technology through simulation and experiments with SiC material. Specifically...