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arXiv 0705.1666cond-mat.soft
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半软向列型弹性体及交叉电场和磁场中的向列相

Semi-soft Nematic Elastomers and Nematics in Crossed Electric and Magnetic Fields

Fangfu Ye, Ranjan Mukhopadhyay, Olaf Stenull, T. C. Lubensky

摘要:

具有锁定各向异性方向的向列型弹性体表现出半软弹性响应,其特征在于应力-应变曲线中的平台,其中应力不随应变变化。我们计算的全球相图的极小模型,这是相当于一个描述一个在交叉电场和磁场,并表明,半软行为与对称性破缺双轴相,它持续到超临界状态。我们还考虑了超越极小模型的推广,并发现了类似的结果。

英文摘要:

Nematic elastomers with a locked-in anisotropy direction exhibit semi-soft elastic response characterized by a plateau in the stress-strain curve in which stress does not change with strain. We calculate the global phase diagram for a minimal model, which is equivalent to one describing a nematic in crossed electric and magnetic fields, and show that semi-soft behavior is associated with a broken symmetry biaxial phase and that it persists well into the supercritical regime. We also consider generalizations beyond the minimal model and find similar results.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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