Rotational viscosity in ferroelectric liquid crystal dobambc determined by dielectric method
- 1 September 1990
- journal article
- Published by Taylor & Francis in Ferroelectrics
- Vol. 109 (1) , 267-272
- https://doi.org/10.1080/00150199008211424
Abstract
Spontaneous polarization, tilt, pitch of the helix, and low frequency dielectric dispersion were measured as functions of temperature in the smectic C* phase of the DOBAMBC. It is shown that measured thermodynamic quantities satisfy simple relations, predicted by a phenomenological model for ferroelectric liquid crystals. These relations allow the evaluation of the rotational viscosity, which temperature dependence is of Arrhenius type with an activation energy of 0.51 eV.Keywords
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