Measurement of the difference in flexoelectric coefficients of nematic liquid crystals using a twisted nematic geometry

被引：22

作者：

Ewings, RA ^{[1
]}

Kischka, C ^{[1
]}

Parry-Jones, LA ^{[1
]}

Elston, SJ ^{[1
]}

机构：

[1] Univ Oxford, Dept Engn Sci, Oxford OX1 3PJ, England

来源：

PHYSICAL REVIEW E | 2006年 / 73卷 / 01期

关键词：

D O I：

10.1103/PhysRevE.73.011713

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

A technique for measuring the difference between the splay and bend flexoelectric coefficients in a nematic liquid crystal is demonstrated. The method uses the flexoelectric-optic effect, but instead of a uniform lying helix structure, a TN cell geometry with an in-plane electric field is used. This has the advantage of avoiding difficulties associated with aligning the helix and can be used to measure achiral materials. The effects due to ionic screening are also taken into account.

引用

页数：6

共 10 条

[1] Comment on "Optical determination of flexoelectric coefficients and surface polarization in a hybrid aligned nematic cell" [J].