ラビング処理による双安定アンカリング界面の形成とその表面自由エネルギー関数の決定

概要

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In this paper, a novel method is proposed to adapt bi-stable anchoring properties on the substrate. A mixed solution of PVCi and PI in same weight was used as an alignment material. It has been confirmed that two types of domains coexist in the sample cell, and molecules of liquid crystal align with the angle of ±45 degree with respect to the rubbing direction. When an electric field parallel to the electrode plane was applied using interdigital electrode, a homogeneous state of alignment changed to a twisted alignment. The twisted state was kept throughout over 50 h after the transition. Furthermore, the surface free energy density function of liquid crystal was determined for the bistable anchoring substrate.