Image Storage Based on Photoinduced Alignment in Azobenzene Liquid-Crystalline Films
WANG Chang-shun1,2, CHEN Guo-jian2, CHEN Yong-mei3, WEI Zhen-qian1, YANG Yan-qiang1, FEI Hao-sheng1
1Department of Physics, Jilin University, Changchun 130023
2Department of Physics, Henan University, Kaifeng 475001
3Department of Applied Chemistry, Beijing University of Chemical Technology, Beijing 100029
Image Storage Based on Photoinduced Alignment in Azobenzene Liquid-Crystalline Films
WANG Chang-shun1,2;CHEN Guo-jian2;CHEN Yong-mei3;WEI Zhen-qian1;YANG Yan-qiang1;FEI Hao-sheng1
1Department of Physics, Jilin University, Changchun 130023
2Department of Physics, Henan University, Kaifeng 475001
3Department of Applied Chemistry, Beijing University of Chemical Technology, Beijing 100029
Abstract： Image storage based on photoinduced alignment in azobenzene liquid-crystalline films is reported. Measurements reveal that the liquid-crystalline film possesses large photoinduced birefringence (Δn~10-2 and permanent optical storage characteristics. The photoinduced alignment process is used for storing images. It is clearly demonstrated that the alignment of the azo chromophores as well as the stored image can be controlled by choosing the appropriate polarization of the irradiating light.
1999, Vol. 16 
