[20a-P7-1~37] 12.1 Fabrications and Structure Controls

[20a-P7-11] Electroclinic and Flexoelectric Effects in Side-Chain Type Liquid-Crystalline Elastomers Composed of Cholesterol Derivative Mesogens

〇Kazuyuki Hiraoka¹, Shiori Taira¹, Yuka Hoshino¹ (1.Tokyo Polytech. Univ.)

Keywords:liquid-crystalline elastomers, flexoelectric effect, electroclinic effect

Mechanical responses to electric stimulation in a side-chain chiral smectic A elastomer composed of cholesterol derivative mesogens were investigated. Electric-field-induced shear deformation, caused by the electroclinic effect, was observed in the chiral smectic A phase with a wide temperature range between 40°C and 120°C. In addition, electric-field-induced bend deformation was recognized in the temperature region of the isotropic state.