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A drop of active matter

Published online by Cambridge University Press:  26 April 2012

Jean-François Joanny and
Sriram Ramaswamy
Jean-François Joanny
Affiliation:
Physicochimie Curie (CNRS-UMR168, UPMC Université Paris VI), Institut Curie, Section de Recherche 26 rue d’Ulm, 75248 Paris CEDEX 05, France
Sriram Ramaswamy*
Affiliation:
Centre for Condensed Matter Theory, Department of Physics, Indian Institute of Science, Bangalore 560 012, India
*
†Email address for correspondence: sriram@physics.iisc.ernet.in
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Abstract

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We study theoretically the hydrodynamics of a fluid drop containing oriented filaments endowed with active contractile or extensile stresses and placed on a solid surface. The active stresses alter qualitatively the wetting properties of the drop, leading to new spreading laws and novel static drop shapes. Candidate systems for testing our predictions include cytoskeletal extracts with motors and ATP, suspensions of bacteria or pulsatile cells, or fluids laden with artificial self-propelled colloids.

JFM classification

Complex Fluids: Complex FluidsBiological Fluid Dynamics: Micro-organism dynamics

Information

Type
Papers
Information
Journal of Fluid Mechanics , Volume 705: Special issue dedicated to Professor T. J. Pedley on his 70th birthday , 25 August 2012, pp. 46 - 57
Copyright
Copyright © Cambridge University Press 2012

Footnotes

‡

Also at JNCASR, Bangalore 560 064, India.

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