Multi-frequency acoustic metasurface for extraordinary reflection and sound focusing

Yi Fan Zhu, Xu Dong Fan, Bin Liang*, Jing Yang, Jun Yang, Lei Lei Yin, Jian Chun Cheng

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

47 Citations (Scopus)

Abstract

We theoretically and numerically present the design of multi-frequency acoustic metasurfaces (MFAMs) with simple structure that can work not only at fundamental frequency, but also at their harmonic frequencies, which breaks the single frequency limitation in conventional resonance-based acoustic metasurfaces. The phase matched condition for achromatic manipulation is discussed. We demonstrate achromatic extraordinary reflection and sound focusing at 1700Hz, 3400Hz, and 5100Hz, that is, they have the same reflection direction and the same focusing position. This significant feature may pave the way to new type of acoustic metasurface, and will also extend acoustic metasurface applications to strongly nonlinear source cases.

Original languageEnglish
Article number121702
JournalAIP Advances
Volume6
Issue number12
DOIs
Publication statusPublished - Dec 1 2016
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2016 Author(s).

ASJC Scopus Subject Areas

  • General Physics and Astronomy

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