Supersoft Elasticity in Polydomain Nematic Elastomers

被引：76

作者：

Biggins, J. S. ^{[1
]}

Warner, M. ^{[1
]}

Bhattacharya, K. ^{[2
]}

机构：

[1] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England

[2] CALTECH, Div Engn & Appl Sci, Pasadena, CA 91125 USA

来源：

PHYSICAL REVIEW LETTERS | 2009年 / 103卷 / 03期

基金：

英国工程与自然科学研究理事会;

关键词：

LIQUID-CRYSTAL ELASTOMERS; MONODOMAIN TRANSITION;

D O I：

10.1103/PhysRevLett.103.037802

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We consider the equilibrium stress-strain behavior of polydomain liquid crystal elastomers (PLCEs). We show that there is a fundamental difference between PLCEs cross-linked in the high temperature isotropic and low temperature aligned states. PLCEs cross-linked in the isotropic state then cooled to an aligned state will exhibit extremely soft elasticity (confirmed by recent experiments) and ordered director patterns characteristic of textured deformations. PLCEs cross-linked in the aligned state will be mechanically much harder and characterized by disclination textures.

引用

页数：4

共 18 条

[1]

BHATTACHARYA K, 2003, MICROSTRUCTURE MARTE, P80401

[2] Semisoft elastic response of nematic elastomers to complex deformations [J].

Biggins, J. S. ;

Terentjev, E. M. ;

Warner, M. .

PHYSICAL REVIEW E, 2008, 78 (04)

[3] TRANSITIONS AND INSTABILITIES IN LIQUID-CRYSTAL ELASTOMERS [J].

BLADON, P ;

TERENTJEV, EM ;

WARNER, M .

PHYSICAL REVIEW E, 1993, 47 (06) :R3838-R3840

[4] Effect of cross-linker geometry on equilibrium thermal and mechanical properties of nematic elastomers [J].

Clarke, SM ;

Hotta, A ;

Tajbakhsh, AR ;

Terentjev, EM .

PHYSICAL REVIEW E, 2001, 64 (06) :8

[5] Texture evolution during the polydomain-monodomain transition in nematic elastomers [J].

Clarke, SM ;

Terentjev, EM ;

Kundler, I ;

Finkelmann, H .

MACROMOLECULES, 1998, 31 (15) :4862-4872

[6] Macroscopic response of nematic elastomers via relaxation of a class of SO(3)-invariant energies [J].

DeSimone, A ;

Dolzmann, G .

ARCHIVE FOR RATIONAL MECHANICS AND ANALYSIS, 2002, 161 (03) :181-204

[7]

Finkelmann H, 1997, J PHYS II, V7, P1059, DOI 10.1051/jp2:1997171

[8] Polydomain-monodomain transition in nematic elastomers [J].

Fridrikh, SV ;

Terentjev, EM .

PHYSICAL REVIEW E, 1999, 60 (02) :1847-1857

[9] Order-disorder transition in an external field in random ferromagnets and nematic elastomers [J].

Fridrikh, SV ;

Terentjev, EM .

PHYSICAL REVIEW LETTERS, 1997, 79 (23) :4661-4664

[10] Incompatible strains associated with defects in nematic elastomers [J].

Fried, E ;

Sellers, S .

JOURNAL OF CHEMICAL PHYSICS, 2006, 124 (02)

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