Pillar-type acoustic metasurface

Abstract : We theoretically investigate acoustic metasurfaces consisting of either a single pillar or a line of identical pillars on a thin plate, and we report on the dependence on the geometrical parameters of both the monopolar compressional and dipolar bending modes. We show that for specific dimensions of the resonators, a bending and a compressional modes may be simultaneously excited. We study their interaction with an anti-symmetric Lamb wave, whether or not they occur at the same frequency, with particular consideration for the amplitude and phase of waves emitted by the pillars at resonance. Especially, the analysis of both the amplitude and the phase of the wave at the common resonant frequency downstream a line of pillars, demonstrates that the reemitted waves allow for the transmission with phase shift of π.
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Physical Review B : Condensed matter and materials physics, American Physical Society, 2017, 96 (10), pp.104311 〈10.1103/PhysRevB.96.104311〉
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Dernière modification le : jeudi 11 janvier 2018 - 06:27:33

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Yabin Jin, Bernard Bonello, Rayisa Moiseyenko, Yan Pennec, Olga Boyko, et al.. Pillar-type acoustic metasurface. Physical Review B : Condensed matter and materials physics, American Physical Society, 2017, 96 (10), pp.104311 〈10.1103/PhysRevB.96.104311〉. 〈hal-01628355〉

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