Gold and aluminum foils with nano-structured edges were investigated as electrodes for corona discharges in nitrogen and ambient air. Low onset voltages were observed due to the field enhancement near the edges of the foil. The lowest onset voltage was determined to be about 1.2 kV in ambient air ... [Appl. Phys. Lett. 103, 023114 (2013)] published Fri Jul 12, 2013.
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