Thermal conductivity of the nematic liquid crystal 4-n-pentyl-4-cyanobiphenyl

Guenter Ahlers, David S. Cannell, Lars Inge Berge, and Shinichi Sakurai
Phys. Rev. E 49, 545 – Published 1 January 1994
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Abstract

We report experimental results for the thermal conductivities of 4-n-pentyl-4-cyanobiphenyl (5CB) for 19 °C<T<48 °C. For T<TNI=35.17 °C this substance is a nematic liquid crystal, where TNI is the nematic-isotropic transition temperature. The conductivities were determined by measuring the temperature difference across a horizontal layer of the fluid heated from below in magnetic fields either parallel or perpendicular to the heat current. The field magnitude was much larger than the Fréedericksz field. For T<TNI, this yielded monodomain samples with the director oriented parallel to the field, and thus the conductivities λ and λ with the director parallel and perpendicular to the heat current, respectively.

  • Received 26 July 1993

DOI:https://doi.org/10.1103/PhysRevE.49.545

©1994 American Physical Society

Authors & Affiliations

Guenter Ahlers, David S. Cannell, Lars Inge Berge, and Shinichi Sakurai

  • Department of Physics and Center for Nonlinear Science, University of California, Santa Barbara, California 93106

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Vol. 49, Iss. 1 — January 1994

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