The effect of dopants on the twist elastic constant and the rotational viscosity coefficient for nematics


Coles, H. J., Dunmur, D. A., Kagawa, H., Kondo, K., Kunimatsu, N., Luckhurst, G. R. and Schott, C. (2000) The effect of dopants on the twist elastic constant and the rotational viscosity coefficient for nematics. Molecular Crystals and Liquid Crystals, 347, 401-410.

Download

Full text not available from this repository.

Description/Abstract

The twist elastic constant, K-2, and the rotational viscosity coefficient, gamma (1), are of importance when the response time for the in-plane switching mode is studied. Since adding dopants is one technique to improve the response characteristics, the effect of dopants on these physical properties is significant. The effect on K-2, and gamma (1) of adding alkyl(alkoxy) phenylcyclopentenones and alkyl(alkoxy) cyanobiphenyls to the base mixture ZLI-4792 together with their temperature dependence have been investigated using different temperature scales. The reduced temperature scale showed the effect of these dopants on K-2 is small. On the other hand, the temperature dependence of gamma (1) depends on both the absolute temperature scale and the reduced temperature scale. Therefore, it is clear that the choice of temperature scale with which to compare gamma (1) for different systems raises fundamental questions which way not have a unique answer.

Item Type: Article
Related URLs:
Keywords: rotational viscosity coefficient, twist elastic constant, in-plane switching mode, liquid crystal displays, dynamic light scatteringlight-scattering, liquid-crystals, electric-field
Subjects: Q Science
Q Science > QD Chemistry
Divisions: University Structure - Pre August 2011 > School of Chemistry
ePrint ID: 19036
Date Deposited: 18 Jan 2006
Last Modified: 27 Mar 2014 18:08
URI: http://eprints.soton.ac.uk/id/eprint/19036

Actions (login required)

View Item View Item