[21a-S224-1~6] 3.3 Information photonics and image engineering

[21a-S224-6] Evaluation of Schlieren Texture in Patterned Nematic Liquid Crystal for Application to Security Devices

〇Keizo Nakayama¹, Junji Ohtsubo² (1.Kinki Univ., 2.Shizuoka Univ.)

Keywords:security,liquid crystal

A UV-curable liquid crystal and the photopolymerization with a photomask can make a patterned liquid crystal cell composed of polymerized isotropic phase and liquid crystal phase areas. Random optical textures in a liquid crystal phase can be applied to security devices as unique information. In this study, evaluation of patterns of schlieren texture in patterned nematic liquid crystal cells has been studied.