Light Switching Effects of Polymer/(Liquid Crystal) Composite Systems
Light Switching Effects of Polymer/(Liquid Crystal) Composite Systems
复制标题
聚合物/（液晶）复合系统的光开关效应
DOI：
10.1007/978-3-642-84115-6_41
复制
发表时间：
1991
期刊：
影响因子：
--
通讯作者：
Y. Morimura
中科院分区：
文献类型：
--
作者：
T. Kajiyama;H. Kikuchi;J. Hwang;S. Moritomi;Y. Morimura
利用光散射技术研究了聚合物/液晶复合膜的聚集态和电光效应。连续液晶域嵌入在三维海绵状聚合物基质中。由聚甲基丙烯酸甲酯（PMMA）和具有正介电各向异性的液晶（LC）组成的复合膜在交流开关时表现出可逆的（光散射）-（光透射）转换。电场，分别。光散射状态取决于光学不均匀性，例如指向矢的空间畸变和/或组分折射率的失配。由液晶聚合物（LCP）和非液晶聚合物组成的二元复合体系的近晶相也被认为是可逆的和非可逆的电光效应。在近晶中间相的情况下，混浊和透明状态保持不变，因为它是，即使在关闭电场（记忆效应）。
Aggregation states and electro-optical effects based on light scattering have been investigated for polymer/(liquid crystal) composite films. A continuous liquid crystalline domain is embedded in a three-dimensional spongy polymer matrix. The composite film composed of poly(methyl methacrylate)(PMMA) and nematic liquid crystal (LC) with positive dielectric anisotropy exhibited reversible (light scattering)—(light transmission) switching upon off- and on-a.c. electric fields, respectively. A light scattering state was dependent on optical heterogeneities such as a spatial distortion of nematic directors and/or mismatching in refractive indices of the components. Reversible and bistable electro-optical effects were also recognized for a smectic phase of a binary composite system composed of liquid crystalline polymer (LCP) and nematic LC. In the case of a smectic mesophase, turbid and transparent states remained unchanged as it was, even though after turning off an electric field (memory effect).