The University of Southampton
University of Southampton Institutional Repository

Molecular theory of helical sense inversions in chiral nematic liquid crystals

Emelyanenko, A. V., Osipov, M. A. and Dunmur, D. A. (2000) Molecular theory of helical sense inversions in chiral nematic liquid crystals Physical Review E, 62, (2), pp. 2340-2352. (doi:10.1103/PhysRevE.62.2340).

Record type: Article


A molecular theory of the helical twisting in chiral liquid crystals is developed, which provides an explanation for the experimentally observed helical sense inversion induced by a change of concentration in binary mixtures of chiral and nonchiral nematic liquid crystals. The theory also describes the sense inversion induced by a change of temperature observed in some single component nematics. The theory present is based on a simple model of a chiral rigid molecule, composed of several equivalent nonchiral sites, which are arranged in the molecule to form a chiral configuration. The macroscopic helical pitch in the chiral nematic phase, twist elastic constant, and nematic order parameters are calculated using the same molecular model. It is shown that the helical sense inversion can be determined by a large biaxiality of chiral molecules, it is also demonstrated that the biaxiality is important in determining the variation of the helical pitch with temperature and concentration.

Full text not available from this repository.

More information

Published date: 1 August 2000
Keywords: twisting power, cholesteric phase, shape model, pitch, derivatives, dopants


Local EPrints ID: 18960
ISSN: 1539-3755
PURE UUID: bd0e6ce8-aa14-4579-97c1-ee79361c1fbd

Catalogue record

Date deposited: 19 Jan 2006
Last modified: 17 Jul 2017 16:34

Export record



Author: A. V. Emelyanenko
Author: M. A. Osipov
Author: D. A. Dunmur

University divisions

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton:

ePrints Soton supports OAI 2.0 with a base URL of

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.