Photoinduced isotropic state of cholesteric liquid crystals: Novel dynamic photonic materials

被引：81
作者：
Hrozhyk, Uladzimir A.
Serak, Svetlana V.
Tabiryan, Nelson V.
Bunning, Timothy J.
机构：
[1] Beam Engn Adv Measurements Co, Winter Pk, FL 32789 USA
[2] USAF, Res Lab, Wright Patterson AFB, OH 45433 USA
来源：
ADVANCED MATERIALS | 2007年 / 19卷 / 20期
关键词：
D O I：
10.1002/adma.200700209
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The photoinduced isotropic (PHI) state of cholesteric liquid crystals (CLCs) induced by the UV irradiation of a highly doped (azobenzene liquid crystal) CLC can be stable for tens of hours dominated by the lifetime of the cis isomers. Low-power laser light can be used to write complex 2D images (a car is shown), where the contrast arises from restoration of the reflective cholesteric phase.
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页码：3244 / +
页数：5
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