Tunable Fluid-Type Metasurface for Wide-Angle and Multifrequency Water-Air Acoustic Transmission  

作　　者：Zhandong Huang Shengdong Zhao Yiyuan Zhang Zheren Cai Zheng Li Junfeng Xiao Meng Su Qiuquan Guo Chuanzeng Zhang Yaozong Pan Xiaobing Cai Yanlin Song Jun Yang 

机构地区：[1]Department of Mechanical and Materials Engineering,The University of Western Ontario,London,Ontario,Canada N6A 5B9 [2]School of Mathematics and Statistics,Qingdao University,Qingdao 266071,China [3]Institute of Mechanics for Multifunctional Materials and Structures,Qingdao University,Qingdao 266071,China [4]Key Laboratory of Green Printing,Institute of Chemistry,Chinese Academy of Sciences(ICCAS),Beijing Engineering Research Center of Nanomaterials for Green Printing Technology,Beijing National Laboratory for Molecular Sciences(BNLMS),Beijing 100190,China [5]Shenzhen Institute for Advanced Study,University of Electronic Science and Technology of China,Shenzhen 518000,China [6]Department of Civil Engineering,University of Siegen,D-57068 Siegen,Germany [7]Qingdao Branch of Institute of Acoustics,Chinese Academy of Sciences,Qingdao 266114,China

出　　处：《Research》2022年第1期111-124,共14页研究（英文）

基　　金：J.Yang is thankful to the Natural Sciences and Engineering Research Council of Canada(NSERC:RGPIN-2016-05198);M.Su and Y.Song thank for the financial support from the National Key R&D Program of China(Grant no.2018YFA0208501);the National Natural Science Foundation of China(Grant nos.51803217,51773206,91963212,and 51961145102);Beijing Nova Program(no.Z201100006820037);the Youth Innovation Promotion Association CAS(no.2020032);the K.C.Wong Education Foundation,and Beijing National Laboratory for Molecular Sciences(no.BNLMS-CXXM-202005);S.Zhao is thankful to the National Natural Science Foundation of China(Grant no.11902171);the Postdoctoral Science Foundation(Grant no.2019M662297);C.Zhang gratefully acknowledges the financial support by the German Research Foundation(DFG,project no.ZH 15/27-1)。

摘　　要：Efficient acoustic communication across the water-air interface remains a great challenge owing to the extreme acoustic impedance mismatch.Few present acoustic metamaterials can be constructed on the free air-water interface for enhancing the acoustic transmission because of the interface instability.Previous strategies overcoming this difficulty were limited in practical usage,as well as the wide-angle and multifrequency acoustic transmission.Here,we report a simple and practical way to obtain the wide-angle and multifrequency water-air acoustic transmission with a tunable fluid-type acoustic metasurface(FAM).The FAM has a transmission enhancement of acoustic energy over 200 times,with a thickness less than the wavelength in water by three orders of magnitude.The FAM can work at an almost arbitrary water-to-air incident angle,and the operating frequencies can be flexibly adjusted.Multifrequency transmissions can be obtained with multilayer FAMs.In experiments,the FAM is demonstrated to be stable enough for practical applications and has the transmission enhancement of over 20 dB for wide frequencies.The transmission enhancement of music signal across the water-air interface was performed to demonstrate the applications in acoustic communications.The FAM will benefit various applications in hydroacoustics and oceanography.

关 键 词：interface ACOUSTICS EXTREME 

分 类 号：O42[理学—声学]