Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 35 for “"current response"”.
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Current flow in inhomogeneous superconductors
"The change of normal current flow into supercurrent flow is examined in a number of problems in which the pair potential of the superconductor can vary spatially. We examine approximate solutions to the Bogoliubov equations in the limits that the pair potential, ~('f), varies quickly or slowly …
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Empirically detecting colour: can we use solar cells as colour sensors?
… to see if a solar cell would create a unique current response to a specific monochromatic wavelength. We tested our solar cells by measuring their individual current response at different voltages with different monochromatic light inputs. We concluded that the use of a single solar cell is …
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The “Apparent” Diffusion Coefficient of Electrons Through a Nafion Membrane
… how this incorporated concentration affects the current response are discussed, concluding electron-hopping is the most plausible mechanism for the case at hand. The Tedford Equation was formulated model the hydrodynamic current response in the membrane taking into account rotation rate …
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Investigation of half-quantized fluxoid states in Sr2RuO4 mesoscopic superconducting rings
… can support exotic objects, such as chiral edge currents and half-quantum vortices (HQVs) characterized by the nontrivial winding of the spin structure. In this dissertation, we present cantilever magnetometry measurements performed on mesoscopic samples of Sr2RuO4, a spin-triplet superconductor. …
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Development and Mechanism of Oxygen Sensitivity in Caudal Hypothalamic Neurons
… were to elucidate the development of the hypoxic responses of rat caudal hypothalamic neurons and to determine the specific membrane properties responsible for these responses. Male Sprague-Dawley rats aged postnatal day 3 (P3) through P56 were exposed to hypoxia for a period of 3 hours. When …
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Kopplung von kollektiven Anregungen in einlagigen und doppellagigen quasi-zweidimensionalen Elektronensystemen
Gegenstand dieser Arbeit ist die Kopplung von kollektiven Anregungen in einlagigen und doppellagigen quasi-zweidimensionalen Elektronensystemen. Es wurden verschiedene modulationsdotierte Proben auf Basis von GaAs mit Gate-Elektrode und Gitterkoppler präpariert, um bei variabler Elektronendichte …
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The Effects of a Lag 5 Schedule of Reinforcement on Toy Play Response Variability
… with an autism spectrum diagnosis lack response variability in their behavioral repertoire, which leads to a lack of problem solving and adaptive skills. Rigid toy play is a common symptom of autism spectrum disorder and shows a larger lack of overall response variability. A lag schedule …
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The Trapped Charge Interfacial Modulation of the Electron Beam Induced Current in Metal Oxide Semiconductor Capacitors
… in the ERASE state, the electron beam induced current (EBIC) exhibits an abrupt reduction in the lateral current response--the trapped charge interfacial modulation (TCIM) of the EBIC. A new technique for extracting the Fu and Sah (23) device model parameters from a single spot-mode transient …
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Surface and Subsurface Application of Chemical Dispersants and Associated Ecosystem Impacts
… for the incident. They are considered to be a response method as opposed to a direct cleanup method, with the intended goals of reducing risk of exposure to sensitive shorelines, reducing environmental injury to surface-dwelling sea birds and marine mammals, and facilitating the biodegradation …
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Exploration of 3D Nanoscale Image Sensor to Enable Logic and Sensing in Single Chip
… Raytracing optical physics model, the optical response of the Nanowire Image sensor is simulated and photo-current response is observed. The measured optical generation and efficiency have been compared with PN Junction Photo detector and vertical Nanowire Image sensor for the same given device …
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Sub-10-nanometre metallic gaps for use in molecular electronics
… electron microscopy as well as probing the current response to an applied bias at low temperature. The empty gaps were fully characterised before self-assembling 7 nm CdSe nanocrystals onto the metal with the help of linker molecules. The I-V characteristics of the empty gaps showed a …
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Quantification of Effect of Solar Storms on TEC over U.S. sector Using Machine Learning
… intensity, and the rate of change of the ring current response. These parameters are inferred autonomously and compared to TEC values obtained from the CORS network of GPS stations. To quantify the effects we examine the difference between the storm-time TEC value and an average from 5 quiet …
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Nano Vacuum Channel Devices for Electronics and Ultrafast Nanophotonics
… has demonstrated a rectified, field driven current response from planar NVCs that extends to petahertz-scale frequencies. Such petahertz electronic devices enable field-resolved measurements of ultrafast phenomena and the capability to decode information stored directly on the optical field …
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Improvement of Sigma Voltage Regulator - A New Power Architecture
… output voltage (lower than 1V) and higher output current (more than 160A) required in the near future, the voltage regulators for the microprocessors, a kind of special power supplies are facing more and more critical challenges to achieve high efficiency and high power density. 90% plus …
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Development of Potential Remote Coal Mine Fire Response Measures: Use of Multiple Passive Source Tracers and Simulation of High Expansion Foam Flow in Simulated Gob Material
This thesis examines potential improvements to current coal mine fire response measures. In the event of a fire scenario, indirect testing and analysis of the exhausting air is needed to characterize changes in the fire. The application of multiple passive source tracers provides improved detail of …
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Ion Conducting Polyelectrolytes in Conductive Network Composites and Humidity Sensing Applications for Ionic Polymer-Metal Composite Actuators
… relative humidity (RH) dependent steady-state current. The detection range is at least 10-80%RH, with 5%RH increment differentiation and likely better resolution. Effects of CNC presence and thickness were studied, in conjunction with ionic liquid at a range of RH values. A thin CNC (pH 4 PAH) …
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A study of electrode-tissue impedances encountered in cardiac pacing
… to give rise to changes in pacemaker output and current response waveform. For certain pacers these externally observable parameters can enable the detection and classification of electrode failure, sometimes in a latent stage before failure to pace.
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Moving towards a strategy for the sustainable delivery of emergency housing and temporary residential accommodation in the City of Cape Town
This dissertation presents the current reality of a South African city, Cape Town. Based on the literature it has been established that a large proportion of South Africa’s population lives in urban areas. South African cities are centres of opportunities and have the promise of a better life but …
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Physical Models and Statistical Methods for Understanding Electrochemical Kinetics
… technique based on analysis of weakly nonlinear current response to a medium-amplitude oscillating voltage signal, which can serve as a complementary technique to cyclic voltammetry, a more traditional approach to electrochemical characterization.
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Design and Testing of a Hydrogel-Based Droplet Interface Lipid Bilayer Array System
… through visual observation and by recording the current response behavior. Arrays of varying sizes and dimensions and with different electrode patterns can be produced quickly and inexpensively using basic laboratory techniques. The designs and fabrication processes for both types of arrays are …
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