1c06 光学的に等方な屈曲型液晶への電場印加により誘起されるキラル領域(物理・物性,口頭発表,2012年日本液晶学会討論会)

抄録

We have found that large optically isotropic chiral domains can be generated in the optically isotropic phase of an oxadiazole material (C5-Ph-ODBP-Ph-OC12) by applying an electric field. The optically isotropic phase exists below the nematic phase. We applied a triangular electric field to C5-Ph-ODBP-Ph-OC12 cells (thickness: 〜5μm) in the optically isotropic phase. The amplitude was varied to 400 V_pp. We found that the domain size depends on both the amplitude and frequency of the applied field. Our results suggest that the phase of the optically isotropic chiral domains induced by the electric field is a B2 dark conglomerate phase.