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

共 30 条

[21]

Ramaswamy S., 2010, ANNU REV CONDEN MA P, V1, P323, DOI [DOI 10.1146/annurev-conmatphys-070909-104101, DOI 10.1146/ANNUREV-CONMATPHYS-070909-104101]

[22] Spontaneous motion in hierarchically assembled active matter [J].

Sanchez, Tim ;

Chen, Daniel T. N. ;

DeCamp, Stephen J. ;

Heymann, Michael ;

Dogic, Zvonimir .

NATURE, 2012, 491 (7424) :431-+

[23] Hydrodynamic fluctuations and instabilities in ordered suspensions of self-propelled particles [J].

Simha, RA ;

Ramaswamy, S .

PHYSICAL REVIEW LETTERS, 2002, 89 (05) :058101

[24] Lattice Boltzmann algorithm to simulate isotropic-nematic emulsions [J].

Sulaiman, N. ;

Marenduzzo, D. ;

Yeomans, J. M. .

PHYSICAL REVIEW E, 2006, 74 (04)

[25] Velocity Correlations in an Active Nematic [J].

Thampi, Sumesh P. ;

Golestanian, Ramin ;

Yeomans, Julia M. .

PHYSICAL REVIEW LETTERS, 2013, 111 (11)

[26] Spontaneous symmetry breaking in active droplets provides a generic route to motility [J].

Tjhung, Elsen ;

Marenduzzo, Davide ;

Cates, Michael E. .

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2012, 109 (31) :12381-12386

[27] Spontaneous flow transition in active polar gels [J].

Voituriez, R ;

Joanny, JF ;

Prost, J .

EUROPHYSICS LETTERS, 2005, 70 (03) :404-410

[28] Biomechanical ordering of dense cell populations [J].

Volfson, Dmitri ;

Cookson, Scott ;

Hasty, Jeff ;

Tsimring, Lev S. .

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2008, 105 (40) :15346-15351

[29] Meso-scale turbulence in living fluids [J].

Wensink, Henricus H. ;

Dunkel, Joern ;

Heidenreich, Sebastian ;

Drescher, Knut ;

Goldstein, Raymond E. ;

Loewen, Hartmut ;

Yeomans, Julia M. .

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2012, 109 (36) :14308-14313

[30] Biofilms as complex fluids [J].

Wilking, James N. ;

Angelini, Thomas E. ;

Seminara, Agnese ;

Brenner, Michael P. ;

Weitz, David A. .

MRS BULLETIN, 2011, 36 (05) :385-391

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