Tunable Asymmetric Transmission via Lossy Acoustic Metasurfaces

Yong Li, Chen Shen, Yangbo Xie, Junfei Li, Wenqi Wang, Steven A. Cummer, and Yun Jing
Phys. Rev. Lett. 119, 035501 – Published 18 July 2017
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Abstract

In this study, we show that robust and tunable acoustic asymmetric transmission can be achieved through gradient-index metasurfaces by harnessing judiciously tailored losses. We theoretically prove that the asymmetric wave behavior stems from loss-induced suppression of high order diffraction. We further experimentally demonstrate this novel phenomenon. Our findings could provide new routes to broaden applications for lossy acoustic metamaterials and metasurfaces.

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  • Received 4 April 2017

DOI:https://doi.org/10.1103/PhysRevLett.119.035501

© 2017 American Physical Society

Physics Subject Headings (PhySH)

  1. Research Areas
Fluid Dynamics

Authors & Affiliations

Yong Li1,2, Chen Shen3,4, Yangbo Xie3, Junfei Li3, Wenqi Wang3, Steven A. Cummer3,*, and Yun Jing4,†

  • 1Institute of Acoustics, School of Physics Science and Engineering, Tongji University, Shanghai 200092, People’s Republic of China
  • 2Shanghai Key Laboratory of Special Artificial Microstructure Materials and Technology, School of Physics Science and Engineering, Tongji University, Shanghai 200092, People’s Republic of China
  • 3Department of Electrical and Computer Engineering, Duke University, Durham, North Carolina 27708, USA
  • 4Department of Mechanical and Aerospace Engineering, North Carolina State University, Raleigh, North Carolina 27695, USA

  • *cummer@duke.edu
  • yjing2@ncsu.edu

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Issue

Vol. 119, Iss. 3 — 21 July 2017

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