Supersoft Elasticity in Polydomain Nematic Elastomers
Supersoft Elasticity in Polydomain Nematic Elastomers
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DOI：
10.1103/physrevlett.103.037802
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发表时间：
2009-07-17
影响因子：
8.6
通讯作者：
Bhattacharya, K.
中科院分区：
文献类型：
--
作者：
Biggins, J. S.;Warner, M.;Bhattacharya, K.
我们考虑多域液晶弹性体（PLCE）的平衡应力-应变行为。我们表明，在高温各向同性和低温排列状态下交联的 PLCE 之间存在根本差异。 PLCE 在各向同性状态下交联，然后冷却到排列状态，将表现出极其柔软的弹性（最近的实验证实）和纹理变形的有序导向图案特征。在排列状态下交联的 PLCE 在机械上会更加坚硬，并且具有向错纹理的特征。
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.