期刊
JOURNAL OF APPLIED PHYSICS
卷 124, 期 15, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.5035129
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资金
- Region of Franche-Comte
- Labex ACTION program [ANR-11-LABX-0001-01]
We present an experimental demonstration of sound absorption tailorability, using acoustic metamaterials made of resonant cavities that take advantage of the inherent visco-thermal characteristics of air. As confirmed by numerical calculation, we particularly show that using quarter-wave-like resonators made of deep subwavelength slits allows a high confinement of the acoustic energy of an incident wave. This leads to enhance the dissipation in the cavities and, consequently, generates strong sound absorption, even over a wide frequency band. This paves the way for tremendous opportunities in acoustic comfort because of their potentially low density, low volume, broadband, and tailorable capabilities. Published by AIP Publishing.
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