Propagation of acoustic waves in nematic elastomers

Авторы: Terentjev E.M., Kamotski I.V., Zakharov D.D., Fradkin L.J.
Журнал: Physical Review E - Statistical, Nonlinear, and Soft Matter Physics
Том: 66
Номер: 5
Год издания: 2002
Издательство: American Physical Society
Местоположение издательства: United States
Номер статьи: 052701
DOI: 10.1103/physreve.66.052701
Аннотация: 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
Добавил в систему: Захаров Дмитрий Дмитриеич

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