Biphasic, Lyotropic, Active Nematics

被引：104

作者：

Blow, Matthew L. ^{[1
,2
]}

Thampi, Sumesh P. ^{[3
]}

Yeomans, Julia M. ^{[3
]}

机构：

[1] Ctr Fis Teor & Computac, P-1649003 Lisbon, Portugal

[2] Univ Lisbon, Dept Fis, Fac Ciencias, P-1749016 Lisbon, Portugal

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

来源：

PHYSICAL REVIEW LETTERS | 2014年 / 113卷 / 25期

关键词：

COMPLEX FLUIDS; MATTER; MOTILITY; MODEL;

D O I：

10.1103/PhysRevLett.113.248303

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We perform dynamical simulations of a two-dimensional active nematic fluid in coexistence with an isotropic fluid. Drops of active nematic become elongated, and an effective anchoring develops at the nematic-isotropic interface. The activity also causes an undulatory instability of the interface. This results in defects of positive topological charge being ejected into the nematic, leaving the interface with a diffuse negative charge. Quenching the active lyotropic fluid results in a steady state in which phase-separating domains are elongated and then torn apart by active stirring.

引用

页数：5

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