Abstract
The unified hydrodynamic theory for systems with a liquid crystalline phase is generalized to include a frequency dependence of the elastic and dissipative parameters of the system. Application is made to nematics for which the frequency dependent anisotropies of the velocity and absorption of sound are calculated. It is shown that the relaxation approximation for the dispersion leads to reasonable results.
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I would like to thank H. Schmidt for many helpful discussions and criticism.
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Jähnig, F. Dispersion and absorption of sound in nematics. Z. Physik 258, 199–208 (1973). https://doi.org/10.1007/BF01392830
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DOI: https://doi.org/10.1007/BF01392830