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http://hdl.handle.net/2289/2879
Title: | Experimental determination of the flexoelectric coefficients of some nematic liquid crystals |
Authors: | Maheswara Murthy, P.R. Raghunathan, V.A. Madhusudana, N.V. |
Issue Date: | 1993 |
Publisher: | Taylor & Francis |
Citation: | Liquid Crystals, 1993, Vol.14, p483 - 496 |
Abstract: | We report measurements of the temperature variation of the flexoelectric coefficient (e1-e3) of a number of nematic liquid crystals like phenylcyclohexanes, cyanobiphenyls, etc. We have also measured (e1+e3) of a few systems using appropriate methods of applying an electric field gradient to the sample. In most of the systems, (e1-e3)/k, where k is a curvature elastic constant, is found to be positive and independent of temperature, as expected. However, in 4-heptyl-1-(4-cyanocyclohexyl)cyclohexane and a few other compounds with relatively flexible parts, |(e1-e3)/k| increases with temperature. We discuss the possible molecular origin of the sign and temperature dependence of the flexoelectric coefficients of the systems studied. |
Description: | Restricted Access. |
URI: | http://hdl.handle.net/2289/2879 |
ISSN: | 0267-8292 1366-5855 (Online) |
Alternative Location: | http://dx.doi.org/10.1080/02678299308027664 |
Copyright: | 1993 Taylor & Francis |
Appears in Collections: | Research Papers (SCM) |
Files in This Item:
File | Description | Size | Format | |
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1993 LC V14 p483.pdf Restricted Access | Restricted Access | 708.45 kB | Adobe PDF | View/Open Request a copy |
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