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A surface impedance-based three-channel acoustic metasurface retroreflector

Publication ,  Journal Article
Shen, C; Díaz-Rubio, A; Li, J; Cummer, SA
Published in: Applied Physics Letters
April 30, 2018

We propose the design and measurement of an acoustic metasurface retroreflector that works at three discrete incident angles. An impedance model is developed such that for acoustic waves impinging at -60°, the reflected wave is defined by the surface impedance of the metasurface, which is realized by a periodic grating. At 0° and 60°, the retroreflection condition can be fulfilled by the diffraction of the surface. The thickness of the metasurface is about half of the operating wavelength and the retroreflector functions without parasitic diffraction associated with conventional gradient-index metasurfaces. Such highly efficient and compact retroreflectors open up possibilities in metamaterial-based acoustic sensing and communications.

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Published In

Applied Physics Letters

DOI

ISSN

0003-6951

Publication Date

April 30, 2018

Volume

112

Issue

18

Related Subject Headings

  • Applied Physics
  • 51 Physical sciences
  • 40 Engineering
  • 10 Technology
  • 09 Engineering
  • 02 Physical Sciences
 

Citation

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Shen, C., Díaz-Rubio, A., Li, J., & Cummer, S. A. (2018). A surface impedance-based three-channel acoustic metasurface retroreflector. Applied Physics Letters, 112(18). https://doi.org/10.1063/1.5025481
Shen, C., A. Díaz-Rubio, J. Li, and S. A. Cummer. “A surface impedance-based three-channel acoustic metasurface retroreflector.” Applied Physics Letters 112, no. 18 (April 30, 2018). https://doi.org/10.1063/1.5025481.
Shen C, Díaz-Rubio A, Li J, Cummer SA. A surface impedance-based three-channel acoustic metasurface retroreflector. Applied Physics Letters. 2018 Apr 30;112(18).
Shen, C., et al. “A surface impedance-based three-channel acoustic metasurface retroreflector.” Applied Physics Letters, vol. 112, no. 18, Apr. 2018. Scopus, doi:10.1063/1.5025481.
Shen C, Díaz-Rubio A, Li J, Cummer SA. A surface impedance-based three-channel acoustic metasurface retroreflector. Applied Physics Letters. 2018 Apr 30;112(18).

Published In

Applied Physics Letters

DOI

ISSN

0003-6951

Publication Date

April 30, 2018

Volume

112

Issue

18

Related Subject Headings

  • Applied Physics
  • 51 Physical sciences
  • 40 Engineering
  • 10 Technology
  • 09 Engineering
  • 02 Physical Sciences