文献类型：期刊文献

英文题名：Switchable acoustic metagrating for three-channel retroreflection and carpet cloaking

作者：Song, Ailing[1];Sun, Chaoyu[1];Xiang, Yanxun[1];Fu-Zhen Xuan[1]

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, Key Lab Pressure Syst & Safety MOE, Shanghai 200237, Peoples R China

年份：2022

卷号：15

期号：2

外文期刊名：APPLIED PHYSICS EXPRESS

收录：;EI(收录号：20220611611884);WOS:【SCI-EXPANDED(收录号:WOS:000743312200001)】；

基金：This work was supported by the National Natural Science Foundation of China (Grant Nos. U1930202, 12025403, 12104154), the Shanghai Pujiang Program (Grant No. 21PJ1402400).

语种：英文

外文关键词：acoustic metagrating; Switchable functionalities; three-channel retroreflection; carpet cloaking

摘要：In this paper, we propose a switchable acoustic metagrating composed of periodic grooves for realizing switchable functionalities of three-channel retroreflection and carpet cloaking. The groove parameters are determined by calculating and analyzing the reflectance of different diffracted waves, and only one propagating reflected wave is allowed. Theoretical analysis and numerical simulations are performed to validate the three-channel retroreflection and carpet cloaking performances of the proposed metagrating. Our research work provides a practical and simple method to design acoustic devices with switchable functionalities and simple structure, and has potential applications in practical fields of acoustic sensing and acoustic communication. (C) 2022 The Japan Society of Applied Physics