Improvement in Response Speed for Bistable Light Switching of (Liquid Crystalline Polymer/Low Molecular Weight Liquid Crystals) Ternary Composite System in Induced Smectic State
Improvement in Response Speed for Bistable Light Switching of (Liquid Crystalline Polymer/Low Molecular Weight Liquid Crystals) Ternary Composite System in Induced Smectic State
复制标题
诱导层列态（液晶聚合物/低分子液晶）三元复合体系双稳态光开关响应速度的提高
DOI：
10.1295/polymj.27.292
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发表时间：
1995
期刊：
影响因子：
2.8
通讯作者：
T. Kajiyama
中科院分区：
文献类型：
--
作者：
J. Hwang;H. Kikuchi;T. Kajiyama
研究了侧链型液晶聚合物（LCP）与两种低分子量液晶（LC）组成的复合体系的双稳态光开关特性。各组分均处于分散状态，但三元复合材料在较宽的混合浓度和温度范围内均表现出诱导近晶相。观察到可逆的混浊（光散射）透明开关后，分别与低和高频率的电场的应用。即使关闭电场，三元复合物的透明和浑浊状态也可以稳定地保持。该三元复合体系在光开关和可逆光开关方面表现出了新的特性。通过降低液晶组分，保持诱导近晶态，可以显著提高光开关的响应速度。在此基础上，实现了一种新型的室温响应时间短的液晶/液晶复合体系，该体系具有光开关和可逆光开关特性。
Bistable light switching characteristics of the composite system composed of side chain type liquid crystalline polymer (LCP) and two kinds of low molecular weight liquid crystals (LCs) have been investigated. Each component was in a nematic state but the ternary composite showed an induced smectic phase over the wide ranges of both mixing concentration and temperature. The reversible turbid (light scattering)-transparent switching was observed upon the application of electric fields with low and high frequencies, respectively. Both transparent and turbid states of the ternary composite could be maintained stably, even though an electric field was turned off. The ternary composite system exhibited novel characteristics on bistable and reversible light switching. The response speed for bistable light switching could be remarkably improved by reducing the LCP fraction, maintaining an induced smectic state. Then, a novel type of the (LCP/LCs) composite system with a short response time at room temperature was realized for that with bistable and reversible light switching.