Dust as a surfactant

A.M. Ignatov; S.A. Trigger; P.P.J.M. Schram

doi:10.1088/1367-2630/5/1/334

Dust as a surfactant

A.M. Ignatov, S.A. Trigger, P.P.J.M. Schram

Fluids and Flows

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Abstract

We argue that dust immersed in a plasma sheath acts as a surfactant. By considering the momentum balance in a plasma sheath, we evaluate the dependence of the plasma surface pressure on the dust density. It is shown that the dust may reduce the surface pressure, giving rise to a sufficiently strong tangential force. The latter is capable of confining the dust layer inside the sheath in the direction perpendicular to the ion flow.

Original language	English
Article number	34
Pages (from-to)	34-1/9
Number of pages	6
Journal	New Journal of Physics
Volume	5
Issue number	1
DOIs	https://doi.org/10.1088/1367-2630/5/1/334
Publication status	Published - 2003

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