Defect dynamics in active nematics

被引：209

作者：

Giomi, Luca ^{[1
,2
]}

Bowick, Mark J. ^{[3
,4
]}

Mishra, Prashant ^{[3
]}

Sknepnek, Rastko ^{[5
]}

Marchetti, M. Cristina ^{[3
,4
]}

机构：

[1] Scuola Int Super Studi Avanzati, SISSA, I-34136 Trieste, Italy

[2] Leiden Univ, Inst Lorentz, NL-2300 RA Leiden, Netherlands

[3] Syracuse Univ, Dept Phys, Syracuse, NY 13244 USA

[4] Syracuse Univ, Syracuse Biomat Inst, Syracuse, NY 13244 USA

[5] Univ Dundee, Sch Engn Phys & Math, Dundee DD1 4HN, Scotland

来源：

PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES | 2014年 / 372卷 / 2029期

基金：

美国国家科学基金会;

关键词：

active liquid crystals; topological defects; self-propelled particles; chaotic dynamics; GIANT NUMBER FLUCTUATIONS; LIQUID-CRYSTALS; TOPOLOGICAL DEFECTS; SELF-ORGANIZATION; HYDRODYNAMICS; FLOW; POINT;

D O I：

10.1098/rsta.2013.0365

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Topological defects are distinctive signatures of liquid crystals. They profoundly affect the viscoelastic behaviour of the fluid by constraining the orientational structure in a way that inevitably requires global changes not achievable with any set of local deformations. In active nematic liquid crystals, topological defects not only dictate the global structure of the director, but also act as local sources of motion, behaving as self-propelled particles. In this article, we present a detailed analytical and numerical study of the mechanics of topological defects in active nematic liquid crystals.

引用

页数：23

共 65 条

[1]

[Anonymous], 1945, Hydrodynamics

[2] Anchoring screening of defects interaction in a nematic liquid crystal [J].

Bogi, A ;

Martinot-Lagarde, P ;

Dozov, I ;

Nobili, M .

PHYSICAL REVIEW LETTERS, 2002, 89 (22) :225501-225501

[3] Theory of phase-ordering kinetics [J].

Bray, AJ .

ADVANCES IN PHYSICS, 2002, 51 (02) :481-587

[4] Spatiotemporal rheochaos in nematic hydrodynamics [J].

Chakrabarti, B ;

Das, M ;

Dasgupta, C ;

Ramaswamy, S ;

Sood, AK .

PHYSICAL REVIEW LETTERS, 2004, 92 (05) :4

[5] Banded spatiotemporal chaos in sheared nematogenic fluids [J].

Chakraborty, Debarshini ;

Dasgupta, Chandan ;

Sood, A. K. .

PHYSICAL REVIEW E, 2010, 82 (06)

[6] COARSENING DYNAMICS IN UNIAXIAL NEMATIC LIQUID-CRYSTALS [J].

CHUANG, I ;

YURKE, B ;

PARGELLIS, AN ;

TUROK, N .

PHYSICAL REVIEW E, 1993, 47 (05) :3343-3356

[7]

de Gennes P. G., 1993, The Physics of Liquid Crystals, V2nd ed

[8] Transformation from walls to disclination lines:: Statics and dynamics of the pincement transition -: art. no. 051713 [J].

de Lózar, A ;

Schöpf, W ;

Rehberg, I ;

Svensek, D ;

Kramer, L .

PHYSICAL REVIEW E, 2005, 72 (05)

[9] Disclination dynamics in nematic liquid crystals [J].

Denniston, C .

PHYSICAL REVIEW B, 1996, 54 (09) :6272-6275

[10] Hydrodynamic interactions in two dimensions [J].

Di Leonardo, R. ;

Keen, S. ;

Ianni, F. ;

Leach, J. ;

Padgett, M. J. ;

Ruocco, G. .

PHYSICAL REVIEW E, 2008, 78 (03)

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