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Bent core molecules and the biaxial nematic phase: A transverse dipole widens the optimal angle

Bates, M.A. (2007) Bent core molecules and the biaxial nematic phase: A transverse dipole widens the optimal angle. Chemical Physical Letters, 437 (4-6). pp. 189-192. ISSN 0009-2614

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Abstract

Recent claims that bent core molecules can exhibit the elusive biaxial nematic phase reveal a molecular structure that differs significantly from the geometry predicted by theory. One proposed reason for this is the large transverse dipole. We have used computer simulations to investigate this using a simple lattice model for a bent core mesogen. We observe that the biaxial nematic to isotropic phase transition is no longer restricted to a single angle. Instead the Landau point splits into a Landau line and this transition can occur for a range of angles. The transition also becomes first order rather than continuous.

Item Type: Article
Institution: The University of York
Academic Units: The University of York > Chemistry (York)
Depositing User: York RAE Import
Date Deposited: 23 Jun 2009 13:49
Last Modified: 23 Jun 2009 13:49
Published Version: http://dx.doi.org/10.1016/j.cplett.2007.02.025
Status: Published
Publisher: Elsevier Science B.V., Amsterdam
Identification Number: 10.1016/j.cplett.2007.02.025
URI: http://eprints.whiterose.ac.uk/id/eprint/5859

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