Author： Chakrabarti J. Dzubiella J. Löwen H.
Publisher： Edp Sciences
E-ISSN： 1286-4854|61|3|415-421
ISSN： 0295-5075
Source： EPL (EUROPHYSICS LETTERS), Vol.61, Iss.3, 2010-03, pp. : 415-421
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Abstract
Brownian-dynamics computer simulations show a dynamical crossoverin a strongly interacting colloidal suspension consisting ofoppositely driven particles, wherein a uniform state transforms,with increasing driving force, into a locally demixed statecharacterized by strongly anisotropic stripe-like domains whichare homogeneous in the direction parallel to the drive but havefinite spatial extent of a double-correlation length in thetransverse direction. A phenomenological dynamicdensity-functional theory has been proposed which accounts forsuch a strongly anisotropic state as arising from an instabilityof a homogeneous state.
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