P-53: Temperature Dependence of the Pretilt Angle of Nematic Liquid-Crystal Molecules Aligned on Rubbed Side-Chain Liquid-Crystalline Polymer Surface

摘要

The present investigation is on the thermal variation of the pretilt angle (θ) of nematic liquid crystal molecules aligned on treated substrates. An unusual temperature behavior is seen in way of two stable values for θ. As the temperature is increased θ changed from one stable value to another. On cooling the sample from the isotropic phase θ increased from aero to a second stable value and remained as a temperature invariant