Perfect Confinement of Acoustic Vortex by Phase-Gradient Metacage  

作　　者：Xicheng Fang Songsong Li Baoyin Sun Dongyang Yan Junyi Yang Jie Luo Dongliang Gao Yadong Xu 

机构地区：[1]School of Physical Science and Technology&Jiangsu Key Laboratory of Frontier Material Physics and Devices,Soochow University,Suzhou 215006,China

出　　处：《Chinese Physics Letters》2025年第3期80-84,共5页中国物理快报(英文版)

基　　金：supported by the Undergraduate Training Program for Innovation and Entrepreneurship,Soochow University(Grant No.202410285001Z);the National Natural Science Foundation of China(Grant Nos.12274313 and 12374293)。

摘　　要：Acoustic wave isolation and noise reduction are significant challenges in the fields of physics and various applications.Traditional noise-control devices are often hampered by substantial size limitations,and their operational efficacy is generally restricted to planar waveforms.In this study,we demonstrate perfect confinement of acoustic vortex waves using an acoustic metacage consisting of phase-gradient metasurfaces.By leveraging the parity-reversed diffraction rule of phase-gradient metasurfaces,the designed metacage exhibited remarkable capabilities for the perfect confinement of acoustic vortex waves,showing robust performance even in the presence of source offsets.These findings present a promising strategy for developing precise and adaptable acoustic confinement technologies.

关 键 词：ACOUSTIC PERFECT VORTEX 

分 类 号：O42[理学—声学]