Multiband Asymmetric Transmission of Airborne Sound by Coded Metasurfaces

Boyang Xie, Hua Cheng, Kun Tang, Zhengyou Liu, Shuqi Chen, Jianguo Tian

Research output: Contribution to journalArticlepeer-review

77 Scopus citations

Abstract

We present the design, characterization, and theoretical and experimental demonstration of multiband asymmetric transmission of airborne sound using an ultrathin coded metasurface formed by an alternating arrangement of the coding elements 0 and 1. The asymmetric transmission effect can be easily controlled to selectively achieve off and on by coding different patterns. Both frequency- and angle-selective transmission is discussed. The proposed multiband asymmetric transmission stems from the constructive and destructive interferences of acoustic-wave coupling between the coded elements. The experimental results are in relative agreement with numerical simulations. This work opens an alternative path for ultrathin acoustic-device design and shows promise for application in acoustic rectification and noise control.

Original languageEnglish
Article number024010
JournalPhysical Review Applied
Volume7
Issue number2
DOIs
StatePublished - 9 Feb 2017
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2017 American Physical Society.

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