Dust Hour Glass in a Capacitive RF Discharge

Iwashita, S. and Schüngel, Edmund and Schulze, Julian and Hartmann, Peter and Donkó, Zoltán and Uchida, G. and Koga, K. and Shiratani, M. and Czarnetzki, U. (2014) Dust Hour Glass in a Capacitive RF Discharge. IEEE Transactions on Plasma Science, 42. pp. 2672-2673. ISSN 0093-3813

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Abstract

Cyclic transport of dust particles (dust hour glass) in a capacitively coupled radio frequency discharge with horizon- tal electrodes is demonstrated. Dust transport toward the upper electrode is initiated by varying the electrical asymmetry of the discharge. A shaped upper electrode guides dust particles to move toward the center of the discharge. Subsequently, the dust drops through the plasma bulk spontaneously, this way returning to the starting location.

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