Time dependence of impedance characteristic of nematic liquid crystal cell

被引：8

作者：

Mada, H ^{[1
]}

Ohnoya, S ^{[1
]}

Endoh, H ^{[1
]}

Fukuro, H ^{[1
]}

机构：

[1] NISSAN CHEM IND CO LTD, FUNABASHI, CHIBA 274, JAPAN

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS | 1996年 / 35卷 / 9A期

关键词：

liquid crystal; impedance; ion; resistivity; electric double layer;

D O I：

10.1143/JJAP.35.L1114

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The frequency dependence of the impedance of a liquid crystal cell was measured for 4-n-pentyl-4'-cyanobiphenyl. The resistivity of a liquid crystal layer decreases due to two relaxation processes. The relaxation time for the slow process is about 4000 h, and that for the fast process is of the order of 100 h. This implies that the carrier ion concentration increases over a long period of time. A surface double layer was detected at the polyimide in the low frequency region, the thickness of which tends to decrease with time.

引用

页码：L1114 / L1115

页数：2

共 11 条

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