Making sound vortices by metasurfaces

被引：117

作者：

Ye, Liping ^{[1
,2
]}

Qiu, Chunyin ^{[1
,2
]}

Lu, Jiuyang ^{[1
,2
]}

Tang, Kun ^{[1
,2
]}

Jia, Han ^{[3
,4
]}

Ke, Manzhu ^{[1
,2
]}

Peng, Shasha ^{[1
,2
]}

Liu, Zhengyou ^{[1
,2
,5
]}

机构：

[1] Wuhan Univ, Minist Educ, Key Lab Artificial Micro & Nanostruct, Wuhan 430072, Peoples R China

[2] Wuhan Univ, Sch Phys & Technol, Wuhan 430072, Peoples R China

[3] Chinese Acad Sci, Inst Acoust, State Key Lab Acoust, Beijing 100190, Peoples R China

[4] Chinese Acad Sci, Inst Acoust, Key Lab Noise & Vibrat Res, Beijing 100190, Peoples R China

[5] Wuhan Univ, Inst Adv Studies, Wuhan 430072, Peoples R China

来源：

AIP ADVANCES | 2016年 / 6卷 / 08期

基金：

中国国家自然科学基金;

关键词：

ANGULAR-MOMENTUM; META-SURFACES; WAVES; REFLECTION; GENERATION; REFRACTION; BEAM;

D O I：

10.1063/1.4961062

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Based on the Huygens-Fresnel principle, a metasurface structure is designed to generate a sound vortex beam in airborne environment. The metasurface is constructed by a thin planar plate perforated with a circular array of deep subwavelength resonators with desired phase and amplitude responses. The metasurface approach in making sound vortices is validated well by full-wave simulations and experimental measurements. Potential applications of such artificial spiral beams can be anticipated, as exemplified experimentally by the torque effect exerting on an absorbing disk. (C) 2016 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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