主催: 日本液晶学会
会議名: 1999年 日本液晶学会討論会
開催地: 富山大学 五福キャンパス
開催日: 1999/09/29 - 1999/10/01
p. 160-161
We propose a new alignment method of liquid crystal (LC) utilizing polarized pulsed Nd:YAG laser. The LC alignment was obserbed on the surface of polimide (PMDA/ODA) film, irradiated by 4^<th> harmonic wave (266nm) of Nd:YAG laser. The polyimide film exhibited LC alignment capability perpendicular to the electric vector of polarization plane (perpendicular alignment) at small fluence, while at large fluence parallel alignment was observed. We evaluated that the perpendicular alignment at small fluence was caused by the orientation of polymer chains, rather than by the photo-decomposition, and parallel alignment was ascribed to the fabrication of LIPSS (Laser Induced Periodic Surface Structure).