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http://hdl.handle.net/2289/326| Title: | Electroclinic measurement of the coefficients of Landau expansion of some ferroelectric liquid crystals |
| Authors: | Padmini, H.P. Madhusudana, N.V. Shivkumar, B. |
| Keywords: | Ferroelectric liquid crystals Electroclinic effect Soft mode |
| Issue Date: | 1994 |
| Publisher: | Indian Academy of Sciences, Bangalore, India. |
| Citation: | Bulletin of Materials Science, 1994, Vol.17, p1119-1129. |
| Abstract: | The electroclinic effect in the smectic A phase of ferroelectric liquid crystals is a sensitive probe for measuring the soft mode response near the A-C* transition point. It is possible to evaluate several coefficients of the Landau theory describing the A-C* transition by simultaneously measuring the frequency dependence of both the optical signal and the current through the sample. We have made such measurements on a couple of homologous series [2S,3S]-4′-(2-chloro-3-methyl pentanoyloxy) phenyl-trans-4″-n alkoxy cinnamates synthesized in our laboratory. The results show that the Landau meanfield theory is adequate to describe the A-C* phase transition in these compounds. |
| Description: | Presented at the 15th International Liquid Crystal Conference, Budapest, 3-8 July 1994. |
| URI: | http://hdl.handle.net/2289/326 |
| ISSN: | 0250-4707 |
| Appears in Collections: | Research Papers (SCM) |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| 1994 Bul. of Mat Sci. V17 p1119.pdf | 11 pages | 276.71 kB | Adobe PDF | View/Open |
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