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Affiliation of Author(s):理学院

Title of Paper:Multifunctional reflection in acoustic metagratings with simplified design

Journal:Appl Phys Lett

Abstract:In this work, we propose and demonstrate a simple acoustic metagrating with binary phase modulation that can be employed to achieve multifunctional reflection with high efficiency, including three-channel retroreflection, quasi-retroreflection, and specular reflection. Although only two sub-elements are designed for the acoustic metagratings, the efficiency of multifunctional reflection is well preserved. By changing the desired retroreflection angle, the incident range of quasi-retroreflection and specular reflection can be effectively tuned. Our work provides an alternative way for planar acoustic devices with versatility and enables the development of acoustic metasurfaces with a simplified design. © 2019 Author(s).

ISSN No.:0003-6951

Translation or Not:no

Date of Publication:2019-02-04

Co-author:Cao, Yanyan,Xu, Yadong

Correspondence Author:Fu Yangyang