Effect of Temperature on the Columnar Tilt of Discotic Liquid Crystals

Abstract:

The effect of temperature on the tilt of discotic columns in a columnar phase has been studied. The homogenous alignment of discotic columns is achieved by applying a mechanical shearing. In the columnar phase, the tilt of the discotic columns at substrate surface is found to change with temperature. A decrease in the temperature of the substrates causes an increase in the pretilt of the discotic columns. The phenomenon is explained based on the consideration of surface free energy at the interface of the substrate.

• Periodical: Key Engineering Materials (Volumes 428-429)
• Pages: 186-193
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.428-429.186
• Online since: January 2010
• Authors: Wen Jun Zheng, Chen Yan Chiang, Chi Wi Ong
• Keywords: Columnar Phase, Discotic Column Alignment, Discotic Liquid Crystal, Surface Free Energy

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