Influence of Pressure on Pretransitional Phenomena in the Isotropic Liquid of a Chiral Liquid Crystal

E. Demikhov; J. Hollmann; P. Pollmann

doi:10.1209/0295-5075/21/5/013

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Influence of Pressure on Pretransitional Phenomena in the Isotropic Liquid of a Chiral Liquid Crystal

E. Demikhov¹, J. Hollmann and P. Pollmann

EPL (Europhysics Letters), Volume 21, Number 5

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Author affiliations

Institute of Physical Chemistry, University Paderborn, POB 1621, D-4790 Paderborn, Germany

¹ Institute of Solid State Physics, Academy of Sciences, 142432 Chernogolovka, Russia

Dates

Received 2 July 1992

Citation

E. Demikhov et al 1993 EPL 21 581

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DOI

https://doi.org/10.1209/0295-5075/21/5/013

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Abstract

First investigation of the pressure dependence of the pretransitional optical activity in the isotropic liquid of highly chiral liquid crystal CE2 in isothermal regime is reported. The inversion of sign of the solpe of the dependence of the optical rotation on pressure in the isotropic liquid is observed. The experimental data agree well with the theory of the effect, developed in terms of the Landau-de Gennes approach to the description of flucturational phenomena in liquid crystals. Theoretical parameters, describing the process of orientational correlations in the isotropic liquid, are determined.

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