VANISHING FREEDERICKSZ TRANSITION THRESHOLD VOLTAGE IN A CHIRAL NEMATIC LIQUID-CRYSTAL

被引：29

作者：

CRANDALL, KA ^{[1
]}

FISCH, MR ^{[1
]}

PETSCHEK, RG ^{[1
]}

ROSENBLATT, C ^{[1
]}

机构：

[1] JOHN CARROLL UNIV,DEPT PHYS,CLEVELAND,OH 44118

来源：

APPLIED PHYSICS LETTERS | 1994年 / 64卷 / 13期

关键词：

D O I：

10.1063/1.111796

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A negative dielectric anisotropy cholesteric liquid crystal, oriented homeotropically in a wedged capacitance cell, was subjected to an applied electric field. The Freedericksz transition threshold voltage was found to depend on the local thickness of the sample, and was found to vanish at a thickness of order 3/2 P, where P is the pitch of the cholesteric in the bulk. The results are consistent with a continuum elastic theory. A discussion of the technological ramifications is presented.

引用

页码：1741 / 1743

页数：3

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