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Electrohydrodynamic instability of a charged membrane

Kumaran, V (2001) Electrohydrodynamic instability of a charged membrane. In: Physical Review E (Statistical, Nonlinear, and Soft Matter Physics), 64 (1). 011911/1-8.


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The stability of shape fluctuations of a flat charged membrane immersed in a fluid is analyzed using a linear stability analysis. A displacement of the membrane surface causes a fluctuation in the conterion density at the surface. This in turn causes an additional contribution to the force density in the momentum equation for the fluid, which results in a normal stress at the surface which is opposite in direction to the stress caused by surface tension. This electrohydrodynamic effect destabilizes fluctuations when the surface potential exceeds a critical value.

Item Type: Journal Article
Publication: Physical Review E (Statistical, Nonlinear, and Soft Matter Physics)
Publisher: American Physical Society (APS)
Additional Information: The DOI is currently only displayed. Copyright for this article belongs to American Physical Society (APS)
Department/Centre: Division of Mechanical Sciences > Chemical Engineering
Date Deposited: 21 Jul 2004
Last Modified: 19 Sep 2010 04:14
URI: http://eprints.iisc.ac.in/id/eprint/1081

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