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Electro-Optical and Thermodynamic Studies on Induced Reentrant Smectic-A Phase in Binary Mixture of Liquid Crystalline Materials

Govindaiah TN

In the present work, our investigation is to study on the optical and electrical properties of binary mixture of cholesteryl nonanoate (CN) and 4-(trans-4’-hexylcyclohexyl) isothiocyanatobenzenes (6CHBT). Mixtures of these molecules exhibits cholesteric and induced reentrant smectic-A phases sequentially when the specimen cooled from its isotropic phase. These phases have been characterized by using microscopic technique. Thermodynamical response of optical anisotropy of electrical susceptibilities of reentrant smectic-A phase has been discussed. Temperature dependent electro-optical phase transition behaviors of the given molecules have also been discussed.