Dynamic Properties near the Nematic-Isotropic Transition of a Liquid Crystal

P. Martinoty, S. Candau, and F. Debeauvais
Phys. Rev. Lett. 27, 1123 – Published 25 October 1971
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Abstract

We have measured the temperature dependence of the flow birefringence in the isotropic phase of p-methoxybenzylidene pn-butylaniline. We have observed a divergence as the phase transition is approached. We have determined the steady shear viscosity η0 and the coupling coefficient μ between velocity shear and the order parameter as a function of temperature. We have also measured the real part of the shear impedance and compared the results with light-scattering data. Our results are well described by de Gennes's theory.

  • Received 17 June 1971

DOI:https://doi.org/10.1103/PhysRevLett.27.1123

©1971 American Physical Society

Authors & Affiliations

P. Martinoty and S. Candau

  • Laboratoire d' Acoustique Moléculaire, Equipe de Recherche Associée du Centre National de la Recherche Scientifique, Strasbourg, France

F. Debeauvais

  • Centre de Recherches sur les Macromolécules, Strasbourg, France

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Issue

Vol. 27, Iss. 17 — 25 October 1971

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