液晶
材料科学
大气温度范围
各向同性
蓝光
蓝移
格子(音乐)
相(物质)
聚合物
光学
光子晶体
光电子学
化学
热力学
有机化学
复合材料
物理
声学
光致发光
作者
Hirotsugu Kikuchi,Masayuki Yokota,Yoshiaki Hisakado,Huai Yang,Tisato Kajiyama
出处
期刊:Nature Materials
[Springer Nature]
日期:2002-09-01
卷期号:1 (1): 64-68
被引量:1251
摘要
Blue phases are types of liquid crystal phases that appear in a temperature range between a chiral nematic phase and an isotropic liquid phase. Because blue phases have a three-dimensional cubic structure with lattice periods of several hundred nanometres, they exhibit selective Bragg reflections in the range of visible light corresponding to the cubic lattice. From the viewpoint of applications, although blue phases are of interest for fast light modulators or tunable photonic crystals, the very narrow temperature range, usually less than a few kelvin, within which blue phases exist has always been a problem. Here we show the stabilization of blue phases over a temperature range of more than 60 K including room temperature (260-326 K). Furthermore, we demonstrate an electro-optical switching with a response time of the order of 10(-4) s for the stabilized blue phases at room temperature.
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