Phase Transition and Electro-Mechanics of Side-Chain Chiral Smectic A Elastomer Composed of Cholesterol Derivative Mesogens

Abstract

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