Velocity Correlations in an Active Nematic

被引：178

作者：

Thampi, Sumesh P. ^{[1
]}

Golestanian, Ramin ^{[1
]}

Yeomans, Julia M. ^{[1
]}

机构：

[1] Rudolf Peierls Ctr Theoret Phys, Oxford OX1 3NP, England

来源：

PHYSICAL REVIEW LETTERS | 2013年 / 111卷 / 11期

关键词：

HYDRODYNAMICS; DYNAMICS;

D O I：

10.1103/PhysRevLett.111.118101

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The flow properties of a continuum model for an active nematic are studied and compared with recent experiments on suspensions of microtubule bundles and molecular motors. The velocity correlation length is found to be independent of the strength of the activity while the characteristic velocity scale increases monotonically as the activity is increased, both in agreement with the experimental observations. We interpret our results in terms of the creation and annihilation dynamics of a gas of topological defects.

引用

页数：5

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