Controlling acoustic orbital angular momentum with artificial structures:From physics to application

作     者：Wei Wang Jingjing Liu Bin Liang Jianchun Cheng 王未;刘京京;梁彬;程建春

作者机构：Key Laboratory of Modern AcousticsMOEInstitute of AcousticsDepartment of PhysicsCollaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjing 210093China 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2022年第31卷第9期

页      面：41-55页

核心收录：

学科分类：07[理学] 082403[工学-水声工程] 08[工学] 070206[理学-声学] 0824[工学-船舶与海洋工程] 0702[理学-物理学] 

基　　金：Project supported by the National Key Research and Development Program of China(Grant No.2017YFA0303700) the National Natural Science Foundation of China(Grant Nos.11634006 and 81127901) the Fund from the High-Performance Computing Center of Collaborative Innovation Center of Advanced Microstructures the Project Funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions 

主　　题：acoustic orbital angular momentum acoustic metamaterials acoustic metasurfaces acoustic communications 

摘      要：Acoustic orbital angular momentum(OAM)associated with helicoidal wavefront recently attracts rapidly-growing attentions,offering a new degree of freedom for acoustic *** to the unique dynamical behavior and inherent mode orthogonality of acoustic OAM,its harnessing is of fundamental interests for wave physics,with great potential in a plethora of *** recent advance in materials physics further boosts efforts into controlling OAM-carrying acoustic vortices,especially acoustic metasurfaces with planar profile and subwavelength *** to their un-conventional acoustic properties beyond attainable in the nature,acoustic artificial structures provide a powerful platform for new research paradigm for efficient generation and diverse manipulation of OAM in ways not possible before,enabling novel applications in diverse scenarios ranging from underwater communication to object *** this article,we present a comprehensive view of this emerging field by delineating the fundamental physics of OAM-metasurface interac-tion and recent advances in the generation,manipulation,and application of acoustic OAM based on artificial structures,followed by an outlook for promising future directions and potential practical applications.