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Nonequilibrium noise and instabilities in membranes with active pumps

Ramaswamy, Sriram and Toner, John and Prost, Jacques (1999) Nonequilibrium noise and instabilities in membranes with active pumps. In: Pramana Journal of Physics, 53 (1). pp. 237-242.


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We study the statistical properties and dynamics of flexible fluid membranes containing active transmembrane proteins and find that such active membranes can be either stable or unstable to small disturbances, depending on the signs of certain crucial parameters characterising the protein-membrane interaction. A major finding is that the shape-fluctuation spectrum in the stable case for a zero-tension active membrane has the same form over a large range of length scales as at equilibrium, but with a nonequilibrium "noise temperature" determined by the activity.

Item Type: Journal Article
Publication: Pramana Journal of Physics
Publisher: Indian Academy of Sciences
Additional Information: Copyright for this article belongs to Indian Academy of Sciences.
Keywords: Nonequilibrium noise;Membranes;Active pumps
Department/Centre: Division of Physical & Mathematical Sciences > Physics
Date Deposited: 13 Sep 2004
Last Modified: 19 Sep 2010 04:15
URI: http://eprints.iisc.ac.in/id/eprint/1611

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