Optical density and ultrasonic measurements of lyotropic chromonic phase of liquid crystalline materials

摘要

We report the results of our studies on optical and thermal properties of binary mixture of compounds, viz. Berberine (BBE) and glacial acetic acid (GAA). The mixture exhibits a very interesting coexistent nematic biphase (N+I) and nematic (N) phase for different concentrations of BBE sequentially when the specimen is cooled from its isotropic phase. Temperature variations in optical density and ultrasonic measurements have been discussed.