Dust as a surfactant

Details Dust as a surfactant Dust as a surfactant

Apr 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003njph....5...34i&link_type=abstract

New Journal of Physics, Volume 5, Issue 1, pp. 34 (2003).

Physics

2

Scientific paper

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.

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