作者
I Dierking, LL Kosbar, AC Lowe, GA Held
发表日期
1998/3/1
期刊
Liquid crystals
卷号
24
期号
3
页码范围
397-406
出版商
Taylor & Francis Group
简介
The effect of UV curing intensity and curing time on the electro-optic behaviour and network morphology of reverse mode polymer stabilized cholesteric textures (PSCTs) has been studied. Scanning electron micrographs indicate that increasing the curing intensity generally results in a more open polymer network characterized by a larger average void size, while the morphology of the individual strands remains largely unchanged. In addition, as the polymerization process proceeds, voids within the network are observed to decrease in size. PSCTs with sufficiently large network voids exhibit a two-stage switching behaviour consistent with a model in which the cholesteric liquid crystal is divided between two distinct environments one in which the liquid crystal is strongly dominated by the polymer network, the other in which a bulk-like behaviour, comparable to the unstabilized cholesteric material, is observed.
引用总数
学术搜索中的文章
I Dierking, LL Kosbar, AC Lowe, GA Held - Liquid crystals, 1998