Volume 131, Number 1, July 2020
|Number of page(s)||6|
|Section||Electromagnetism, Optics, Acoustics, Heat Transfer, Classical Mechanics, and Fluid Dynamics|
|Published online||29 July 2020|
Acoustic guided-mode resonances in a metamaterial
1 Department of Physics, Nanchang University - Nanchang 330031, China
2 MOE Key Laboratory of Advanced Micro- structured Materials, School of Physics Science and Engineering, Tongji University - Shanghai 200092, China
Received: 23 April 2020
Accepted: 24 June 2020
We theoretically analyze and numerically demonstrate that guided-mode resonance (GMR) effects can be achieved in acoustic systems. Similar to its optical counterpart, the acoustic GMR-like effects can support multiple narrow bandwidth transmission dips at a broad range of frequencies and give rise to strongly localized acoustic pressure fields in the acoustic waveguide layer. The discussed fundamental phenomena will allow a broad range of applications, including the design of filters, sensors, and other novel acoustic devices.
PACS: 43.20.-f – General linear acoustics / 43.20.Hq – Velocity and attenuation of acoustic waves / 81.05.Xj – Metamaterials for chiral, bianisotropic and other complex media
© 2020 EPLA
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