Dust as a surfactant

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

Research output: Contribution to journalArticleAcademicpeer-review

1 Citation (Scopus)
81 Downloads (Pure)


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 languageEnglish
Article number34
Pages (from-to)34-1/9
Number of pages6
JournalNew Journal of Physics
Issue number1
Publication statusPublished - 2003


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