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Title: Experimental determination of the surface tension of nematic liquid crystals
Authors: Krishnaswamy, S.
Shashidhar, R.
Issue Date: 1975
Publisher: Indian Academy of Sciences, Bangalore, India.
Citation: Pramana Supplement, 1975, Vol. 1, p247-252.
Abstract: Equilibrium measurements of surface tension have been carried out on p-anisaldazine and p-azoxyanisole in the nematic and isotropic phases using the pendaot drop method. The drop was completely enclosed in a chamber filled with inert atmosphere and maintained at all times in equilibrium with its saturated vapour. The surface tension-temperature characteristic shows a marked anomaly for both compounds ; the slope in the nematic phase is initially negative and then reverses sign as the temperature approaches the nematic-isotropic transition point. For p-anisaldazine the slope again becomes negative immediately after the transition whereas for p-azoxyanisole the positive slope extends for a few degrees in the isotropic phase before changing sign at higher temperatures. The observed features are in qualitative agreement with the theoretical predictions of Croxton and Chandrasekhar.
Description: Proceedings of the international liquid crystal conference, Bangalore, 1973.
ISSN: 0304-4289
Copyright: Indian Academy of Sciences, Bangalore, India.
Appears in Collections:Research Papers (SCM)

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