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Issue 24, 2011

Does the isotropic–biaxial nematic transition always exist? A new topology for the biaxial nematic phase diagram

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Abstract

The biaxial nematic phase diagram for the second rank Straley quadrupolar pair potential, as explored until now, implies that a direct transition from a biaxial nematic to an isotropic phase can occur, either at a single Landau point or even, as recently shown using mean field theory, along a line. We show by an extensive Monte Carlo investigation that a different topology can be found in a wide region of parameter space, with the passage from biaxial to isotropic always going through a uniaxial phase. We argue that this may hint in part at the difficulty in realising a biaxial nematic phase.

Graphical abstract: Does the isotropic–biaxial nematic transition always exist? A new topology for the biaxial nematic phase diagram

Article information


Submitted
29 Jun 2011
Accepted
01 Sep 2011
First published
24 Oct 2011

Soft Matter, 2011,7, 11483-11487
Article type
Paper

Does the isotropic–biaxial nematic transition always exist? A new topology for the biaxial nematic phase diagram

G. S. Preeti, K. P. N. Murthy, V. S. S. Sastry, C. Chiccoli, P. Pasini, R. Berardi and C. Zannoni, Soft Matter, 2011, 7, 11483 DOI: 10.1039/C1SM06214J

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