文献类型：期刊文献

英文题名：Reconfigurable acoustic metagrating for multiple anomalous wavefront manipulation functionalities

作者：Song, Ailing[1];Sun, Chaoyu[1];Bai, Yazhu[1];Xiang, Yanxun[1];Xuan, Fu-Zhen[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：453

外文期刊名：PHYSICS LETTERS A

收录：;EI(收录号：20224112853711);WOS:【SCI-EXPANDED(收录号:WOS:000871108600011)】；

基金：This work was supported by the National Natural Science Foun- dation of China (Grant Nos. 12104154, U1930202, 12025403) , the Shanghai Pujiang Program (Grant No. 21PJ1402400) , the Natural Science Foundation of Shanghai (Grant No. 22ZR1416900) , and the Young Elite Scientists Sponsorship Program by CAST (Grant No. 2021QNRC001) .

语种：英文

外文关键词：Acoustic metagrating; Slit tubes; Specular reflection; Three -channel retroreflection; Beam splitting

摘要：In this paper, we propose a reconfigurable acoustic metagrating composed of periodic rotatable slit tubes and a sound hard plane for realizing multiple anomalous wavefront manipulation functionalities: specular reflection, three-channel retroreflection, and beam splitting. The acoustic metagrating can manipulate the reflectances of different diffracted waves by changing the rotational angle of slit tubes. Both the theoretical analysis and numerical simulations demonstrate the proposed metagrating can stimulate specific diffraction orders and achieve the desired functionalities. Our research work provides a good method for designing reconfigurable acoustic devices with multiple functionalities and has potential applications in acoustic sensing, acoustic communication, and noise mitigation.(c) 2022 Elsevier B.V. All rights reserved.