LOUIS University of Alabama in Huntsville
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Improvements of Radial Stretch System for the Mechanical Characterization of Flexible Electronics
Get PDFhttps://louis.uah.edu/research-horizons/1354/thumbnail.jp
Hit the Brakes for Goodness\u27 Sake: Quality Assurance for Preventing Automotive Brake Assembly Failures
Get PDFhttps://louis.uah.edu/research-horizons/1367/thumbnail.jp
Development of Clustering Methods for Unidirectional Weighted Graph Networks
Get PDFhttps://louis.uah.edu/research-horizons/1369/thumbnail.jp
Research Aircraft Optimization from generated Requirements For Use in AIAA DBF Competition
Get PDFhttps://louis.uah.edu/research-horizons/1371/thumbnail.jp
Cognitive Behavioral Therapy as a Treatment Method for ADHD
Get PDFhttps://louis.uah.edu/research-horizons/1373/thumbnail.jp
Special Effects via Volume Ray Casting CPU vs. GPU Performance
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Simulation of atmospheric pressure dielectric barrier discharges at low driving frequencies
Get PDFThis dissertation investigates the self-pulsing of Dielectric Barrier Discharges (DBDs) at low driving frequencies, in particular, (a) the dependence of current on the product pd of gas pressure p and the gas gap length d, (b) the effects of lossy dielectrics (in resistive discharges) and large dielectric permittivity (in ferroelectrics) on current dynamics, (c) the transition from Townsend to a dynamic Capacitively Coupled Plasma (CCP) discharge with changing pd values, and (d) the transition from Townsend to a high-frequency CCP regime with increasing the driving frequency. A one-dimensional fluid model of Argon plasma is coupled to an equivalent RC circuit for lossy dielectrics. Our results show multiple current pulses per AC period in Townsend and CCP discharge modes which are explained by uncoupled electron-ion transport in the absence of quasineutrality and surface charge deposition at dielectric interfaces. The number of current pulses decreases with an increasing applied frequency when the Townsend discharge transforms into the CCP discharge. The resistive barrier discharge with lossy dielectrics exhibits Townsend and glow modes for the same pd value (7.6 Torr cm) for higher and lower resistances, respectively. Finally, we show that ferroelectric materials can amplify discharge current in DBDs. Similarities between current pulsing in DBD, Trichel pulses in corona discharges, and subnormal oscillations in DC discharges are discussed
Influence of Pyocyanin Pigment on the Efectiveness of Non Thermal Argon Gas Plasma Sterilization
Get PDFhttps://louis.uah.edu/rceu-hcr/1445/thumbnail.jp