• Sriram Ramaswamy

      Articles written in Pramana – Journal of Physics

    • Nonequilibrium noise and instabilities in membranes with active pumps

      Sriram Ramaswamy John Toner Jacques Prost

      More Details Abstract Fulltext PDF

      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.

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