Spontaneous flow transition in active polar gels

被引：302
作者：
Voituriez, R
Joanny, JF
Prost, J
机构：
[1] Inst Curie, CNRS, UMR168, Sect Rech,Physicochim Curie, F-75248 Paris, France
[2] Ecole Super Phys & Chim Ind Ville Paris, F-75231 Paris, France
来源：
EUROPHYSICS LETTERS | 2005年 / 70卷 / 03期
关键词：
D O I：
10.1209/epl/i2004-10501-2
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
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. owing 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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页码：404 / 410
页数：7
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