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http://hdl.handle.net/2289/901
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. |
URI: | http://hdl.handle.net/2289/901 |
ISSN: | 0304-4289 |
Copyright: | Indian Academy of Sciences, Bangalore, India. |
Appears in Collections: | Research Papers (SCM) |
Files in This Item:
File | Description | Size | Format | |
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1975 Pramana supp. No.1 p247.pdf | 6p. | 230.95 kB | Adobe PDF | View/Open |
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