Publication Title

Physical Review E

Publication Date

12-26-2002

Document Type

Article

DOI

10.1103/PhysRevE.66.060701

Keywords

banana-shaped compounds, achiral molecules, field, transition

Disciplines

Physics

Abstract

The dielectric fluctuations in the uniaxial nematic phase of a bent-core liquid crystal have been studied by dynamic light scattering. Polarization selection of the scattering cross-section reveals one mode due to ordinary director fluctuations and, in the lower part of the nematic phase, a second mode attributable to fluctuations of the biaxial order parameter. The director fluctuations are similar to100 times slower than observed in typical nematics based on straight-core molecules, suggesting that the bent core nematogenic units may be microscopic smectic domains ("cybotactic" clusters).

Comments

Copyright 2002 American Physical Society. Available on publisher's site at http://dx.doi.org/10.1103/PhysRevE.66.060701


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