Publication Title

Physical Review E

Publication Date

3-24-2010

Document Type

Article

DOI

10.1103/PhysRevE.81.031711

Keywords

nematic phase, smectic-a, relaxation, spectroscopy, viscosity, molecules, dimers

Disciplines

Physics

Abstract

Dielectric spectroscopy measurements have been performed on a bent-core nematic liquid crystal and on its binary mixtures with a calamitic nematic. We have detected more dispersions in the bent-core compound than in the calamitic one, including one at an unusually low frequency of a few kilohertz. The dispersions detected in the mixtures have been identified and the spectra have been split into contributions of the constituents. In order to connect the dielectric increment with the molecular dipole moment we have applied a sophisticated conformational calculation not performed before for a large, flexible mesogen molecule with numerous polar groups.

Comments

Copyright 2010 American Physical Society. Available on publisher's site at http://dx.doi.org/10.1103/PhysRevE.81.031711


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