Acoustic broadband metacouplers

Kun Li, Bin Liang*, Jing Yang, Jun Yang, Jian chun Cheng

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)

Abstract

We present the concept of acoustic metacoupler for broadband impedance match between two media with different impedances and cross sections. An implementation is demonstrated that produces spatial gradient of effective acoustic impedance by utilizing helical-like structure with continuously varying pitch instead of changing the cross-section or employing multiple layers. Numerical results verify the effectiveness of our design in achieving near-unity coupling efficiency in a broad band. We anticipate the proposed metacoupler with capability and flexibility to open route to broadband impedance matching and to have a wide realm of potential applications such as transducer design, acoustic imaging and energy harvesting.

Original languageEnglish
Article number203504
JournalApplied Physics Letters
Volume110
Issue number20
DOIs
Publication statusPublished - May 15 2017
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2017 Author(s).

ASJC Scopus Subject Areas

  • Physics and Astronomy (miscellaneous)

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