Spontaneous flow transition in active polar gels

R. Voituriez; J. F. Joanny; J. Prost

doi:10.1209/epl/i2004-10501-2

Spontaneous flow transition in active polar gels

R. Voituriez, J. F. Joanny, J. Prost

Research output: Contribution to journal › Article › peer-review

Abstract

We study theoretically the effects of confinement on active polar gels such as the actin network of eukaryotic cells. Using generalized hydrodynamics equations derived for active gels, we predict, in the case of quasi-one-dimensional geometry, a spontaneous flow transition from a homogeneously polarized immobile state for small thicknesses, to a perturbed flowing state for larger thicknesses. The transition is not driven by an external field but by the activity of the system. We suggest several possible experimental realizations.

Original language	English
Pages (from-to)	404-410
Number of pages	7
Journal	EPL
Volume	70
Issue number	3
DOIs	https://doi.org/10.1209/epl/i2004-10501-2
Publication status	Published - 1 May 2005
Externally published	Yes

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title = "Spontaneous flow transition in active polar gels",

abstract = "We study theoretically the effects of confinement on active polar gels such as the actin network of eukaryotic cells. Using generalized hydrodynamics equations derived for active gels, we predict, in the case of quasi-one-dimensional geometry, a spontaneous flow transition from a homogeneously polarized immobile state for small thicknesses, to a perturbed flowing state for larger thicknesses. The transition is not driven by an external field but by the activity of the system. We suggest several possible experimental realizations.",

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AU - Joanny, J. F.

AU - Prost, J.

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N2 - We study theoretically the effects of confinement on active polar gels such as the actin network of eukaryotic cells. Using generalized hydrodynamics equations derived for active gels, we predict, in the case of quasi-one-dimensional geometry, a spontaneous flow transition from a homogeneously polarized immobile state for small thicknesses, to a perturbed flowing state for larger thicknesses. The transition is not driven by an external field but by the activity of the system. We suggest several possible experimental realizations.

AB - We study theoretically the effects of confinement on active polar gels such as the actin network of eukaryotic cells. Using generalized hydrodynamics equations derived for active gels, we predict, in the case of quasi-one-dimensional geometry, a spontaneous flow transition from a homogeneously polarized immobile state for small thicknesses, to a perturbed flowing state for larger thicknesses. The transition is not driven by an external field but by the activity of the system. We suggest several possible experimental realizations.

U2 - 10.1209/epl/i2004-10501-2

DO - 10.1209/epl/i2004-10501-2

M3 - Article

AN - SCOPUS:18444367094

SN - 0295-5075

VL - 70

SP - 404

EP - 410

JO - EPL

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Spontaneous flow transition in active polar gels

Abstract

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