Propagation of acoustic waves in nematic elastomers

E M Terentjev, I V Kamotski, D D Zakharov, L J Fradkin

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We develop a theory of elastic waves in oriented monodomain nematic elastomers. The effect of soft elasticity, combined with the Leslie-Ericksen version of dissipation function, results in an unusual dispersion and anomalous anisotropy of shear acoustic waves. A characteristic time scale of nematic rotation determines the crossover frequency, below which waves of some polarizations have a very strong attenuation while others experience no dissipation at all. We study the anisotropy of low-frequency Poynting vectors and wave fronts, and discuss a "squeeze" effect of energy transfer nonparallel to the wave vector. Based on these theoretical results, an application, the acoustic polarizer, is proposed.
Original languageEnglish
JournalPhysical Review E
Issue number5
Publication statusPublished - 2002

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    Terentjev, E. M., Kamotski, I. V., Zakharov, D. D., & Fradkin, L. J. (2002). Propagation of acoustic waves in nematic elastomers. Physical Review E, 66(5).