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The mechanics of active matter: Broken-symmetry hydrodynamics of motile particles and granular layers

Ramaswamy, Sriram and Simha, Aditi R (2006) The mechanics of active matter: Broken-symmetry hydrodynamics of motile particles and granular layers. In: Solid State Communications, 139 (11-12). pp. 617-622.

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Abstract

This articles reviews briefly our recent theoretical results on order, fluctuations and flow in collections of self-driven particles, in suspension or on a solid surface. The theoretical approach we have developed applies not only to collections of organisms such as schools of fish or collectively swimming bacteria, but also to motor-microtubule extracts with ATP and, most surprisingly, to agitated monolayers of orientable granular particles. We contrast the behaviour of these active systems with that of thermal equilibrium systems with the same symmetry. As an illustration of the role of activity we show that active smectics in three dimensions show true long-range order, unlike their thermal equilibrium counterparts.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Elsevier.
Keywords: A. Self-propelled particles;A. Active particles;D. Biological physics;D. Driven systems
Department/Centre: Division of Physical & Mathematical Sciences > Physics
Date Deposited: 10 Apr 2007
Last Modified: 19 Sep 2010 04:36
URI: http://eprints.iisc.ernet.in/id/eprint/10524

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