Propagation of acoustic waves in nematic elastomers


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

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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.


Item Type Articles
CreatorsTerentjev, E. M., Kamotski, I. V., Zakharov, D. D. and Fradkin, L. J.
DepartmentsFaculty of Science > Mathematical Sciences
ID Code7368
Additional InformationID number: ISI:000179630800085


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