화학공학소재연구정보센터
Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals, Vol.359, 477-486, 2001
Photoinduced surface alignment: The role of liquid-crystalline order
The optical control of surface alignment was investigated, using ate-dye doped polyimide films as photosensitive material. The kinetics of the realignment of the easy axis was measured in isotropic, nematic and smectic A phases, It is demonstrated that the light-induced realignment of the dye molecules at the polymer-liquid crystal interface is strongly influenced by the presence of the liquid-crystalline order. A simple model is presented, which accounts qualitatively for the experimental observations.