Low-frequency acoustic metasurface containing series-type resonators with curled necks

Jung San Chen, Tzu Huei Kuo, Wen Yang Lo, Cheng Yi Wang

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

This study presents a novel acoustic metasurface with a coplanar series-type Helmholtz resonator with curled necks. Using extended necks that are embedded in cavities enables one to significantly reduce the resonance frequency of the resonator. The sound absorption performance of this metasurface is investigated theoretically, numerically, and experimentally. The absorption band can be easily adjusted by altering the neck length and diameter. To achieve a wide frequency band with high absorption, two inhomogeneous units are arranged in parallel. Theoretical and finite-element predictions exhibit good agreement with the experimental measurements. The results demonstrate that the proposed acoustic metasurface with subwavelength thickness is capable of effectively absorbing low-frequency sound.

Original languageEnglish
Article number085705
JournalPhysica Scripta
Volume97
Issue number8
DOIs
Publication statusPublished - 2022 Aug 1

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Mathematical Physics
  • Condensed Matter Physics

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