Morphology and electro-optical properties of reverse mode polymer dispersed liquid crystals

被引：35

作者：

Macchione, M ^{[1
]}

Cupelli, D ^{[1
]}

De Filpo, G ^{[1
]}

Nicoletta, FP ^{[1
]}

Chidichimo, G ^{[1
]}

机构：

[1] Univ Calabria, Dipartimento Chim, I-87036 Rende, CS, Italy

来源：

LIQUID CRYSTALS | 2000年 / 27卷 / 10期

关键词：

D O I：

10.1080/026782900423395

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We have investigated the morphology and electro-optical properties of reverse mode polymer dispersed liquid crystals as a function of liquid crystal loading. Reverse mode shutters have been obtained by a polymerization-induced phase separation of mixtures, consisting of a liquid crystalline monomer and a non-reactive nematic liquid crystal, placed between rough conductive surfaces. Such surfaces are able to keep the photopolymerizable mixtures homeotropically aligned without the use of any aligning polymer substrate. OFF state transmittances are always larger than 80% and the switching fields decrease if the non-reactive liquid crystal percentage is increased. Both rise and decay times are always lower than 10 ms. The electro-optical properties have been related to the sample morphology and a simple mode is proposed.

引用

页码：1337 / 1341

页数：5

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