PHOTOINDUCED BENDING UPON PULSED IRRADIATION IN AZOBENZENE-CONTAINING CROSSLINKED LIQUID-CRYSTALLINE POLYMERS

被引：7
|
作者：
Shimamura, Aki [1 ]
Priimagi, Arri [1 ,2 ]
Mamiya, Jun-Ichi [1 ]
Kinoshita, Motoi [1 ]
Ikeda, Tomiki [1 ]
Shishido, Atsushi [1 ]
机构：
[1] Tokyo Inst Technol, Chem Resources Lab, Midori Ku, Yokohama, Kanagawa 2268503, Japan
[2] Aalto Univ, Dept Appl Phys, FI-00076 Aalto, Finland
来源：
JOURNAL OF NONLINEAR OPTICAL PHYSICS & MATERIALS | 2011年 / 20卷 / 04期
关键词：
Azobenzene; liquid crystal; photomobile materials; photocontraction; pulsed irradiation; NETWORK; LIGHT; FILMS; ELASTOMERS; ACTUATORS; ALIGNMENT; DYNAMICS; BEHAVIOR; FIBERS; DRIVEN;
D O I：
10.1142/S0218863511006200
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We have investigated the photoresponsive behavior of homogeneously aligned low-azobenzene-concentration crosslinked liquid-crystalline polymers. We compared the thermal contraction and photocontraction of the films, and show that upon UV irradiation, they bend efficiently towards the actinic light source. The photoinduced bending is studied both under continuous-wave irradiation and irradiation with nanosecond pulses. Pulsed irradiation revealed that the photomechanical response can take place within sub-millisecond time scale, and that even a single laser pulse can cause the sample to bend.
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页码：405 / 413
页数：9
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