Swarming and swirling in self-propelled polar granular rods

被引：314

作者：

Kudrolli, Arshad ^{[1
]}

Lumay, Geoffroy ^{[1
,2
]}

Volfson, Dmitri ^{[3
]}

Tsimring, Lev S. ^{[3
]}

机构：

[1] Clark Univ, Dept Phys, Worcester, MA 01610 USA

[2] Univ Liege, Dept Phys, GRASP, B-4000 Liege, Belgium

[3] Univ Calif San Diego, Inst Nonlinear Sci, La Jolla, CA 92093 USA

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 100卷 / 05期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevLett.100.058001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Using experiments with anisotropic vibrated rods and quasi-2D numerical simulations, we show that shape plays an important role in the collective dynamics of self-propelled (SP) particles. We demonstrate that SP rods exhibit local ordering, aggregation at the side walls, and clustering absent in round SP particles. Furthermore, we find that at sufficiently strong excitation SP rods engage in a persistent swirling motion in which the velocity is strongly correlated with particle orientation.

引用

页数：4

共 26 条

[21] Nonequilibrium clustering of self-propelled rods [J].