Hydrodynamic regimes of active rotators at fluid interfaces

被引：28

作者：

Llopis, I. ^{[1
]}

Pagonabarraga, I. ^{[1
]}

机构：

[1] Univ Barcelona, Dept Fis Fonamental, E-08028 Barcelona, Spain

来源：

EUROPEAN PHYSICAL JOURNAL E | 2008年 / 26卷 / 1-2期

关键词：

D O I：

10.1140/epje/i2007-10295-y

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We analyze the collective motion of suspensions of active rotators at low Reynolds numbers which interact hydrodynamically. We introduce a simple model for a rotator which allows us to classify the relevant dynamical regimes of the suspension. We characterize the collective velocity at which rotators displace and analyze its implications at long times, when these rotator suspensions diffuse. We analyze the differences with respect to diffusion in suspensions of passive particles, and assess the relevance of the Stokes-Einstein relation on rotators' diffusivity.

引用

页码：103 / 113

页数：11

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