くさび型セルを用いたコレステリックブルー相の相転移挙動に及ぼす界面効果に関する研究

抄録

Blue phase (BP) is expected to be used as electro-optic devices because of its fast response to electric field and characteristic optical properties. The phase transition behavior and the molecular and lattice orientations of BP are seemed to be affected by the device surface, but there are many unclear points. In this study, we investigated the phase transition behavior of BP by polarizing microscope observation and reflection spectra measurements using a wedge-cell. We found that the phase transition from cholesteric to BP I phases occurs preferentially in the vicinity of Grandjean defects of cholesteric phase in wedge-cell upon heating temperature.