Prof. Massood Tabib-Azar
Visting Professor, Department of Electrical Engineering and Computer Sciences, UC Berkeley
Electrical and Computer Engineering Department and Biomedical Engineering Department, University of Utah
November 3, 2015 | 12:00 to 01:00 | 540 Cory Hall
Host: Ali Javey
Micro plasma devices (MPD) with power gain are of interest in many applications involving operations in environments with ionizing radiations, propulsion, control and amplification of electromagnetic waves, and in metamaterials for energy management. Here we review MPDs with an emphasis on new architectures that have evolved during the past 5 years. Devices with programmable ionization rates and boundaries are developed to control the plasma current and achieve power gain. Plasma devices with 1-10 mm gaps are shown to operate in the sub-Paschen regime in atmospheric pressures where ion-assisted field emission results in a breakdown voltage that linearly depends on the gap distance in contrast to the exponential dependence dictated by the Paschen curve. Small gap devices offer higher operation frequencies at low operation voltages with applications in metamaterial skins for energy management and in harsh environments in nuclear reactors and in space. In addition to analog plasma devices, logic gates, digital circuits, and distributed amplifiers are also discussed.
www.ece.utah.edu/amandaandfaculty.utah.edu/u0640514-Massood_Tabib-Azar
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