Electrothermal effect in nematic liquid crystal

被引：23

作者：

Lelidis, I

Durand, G

机构：

[1] Laboratoire de Physique des Solides, 91405 Orsay Cedex

来源：

PHYSICAL REVIEW LETTERS | 1996年 / 76卷 / 11期

关键词：

D O I：

10.1103/PhysRevLett.76.1868

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We measure optically the dynamics of the nematic order parameter S induced by an electric field in the isotropic phase of the nematogenic 4'-n-pentyl-4-cyanobiphenyl. Using S as a thermometer, we observe transient heating and cooling when orientational order is induced, or decays. This electrothermal effect is quantitatively explained by the reversible entropy exchanges between the orientational degree of freedom and the bulk.

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页码：1868 / 1871

页数：4

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