配向壁に安定化されるヘルフリッヒ変形とその電気光学効果

抄録

Cholesteric liquid crystals (ChLCs) exhibit a selective reflection band originating from one dimensional helical structure, and thus is expected to be used in practical application such as reflective displays. In this study, we focus on Helfrich deformation in ChLCs, which causes an undulation of a helical structure. Usually, the Helfrich deformation can be obtained only in a short time (less than 10 s) while applying an electric field, and therefore have had a serious drawback in device application. Here, we demonstrated a sustainable Helfrich deformation in a ChLC with a partially polymerized region, leading to the wide-range tuning of the SR band covering red-green-blue reflection.