Making sound vortices by metasurfaces

Liping Ye, Chunyin Qiu, Jiuyang Lu, Kun Tang, Han Jia, Manzhu Ke, Shasha Peng, Zhengyou Liu

Research output: Contribution to journalArticlepeer-review

105 Scopus citations

Abstract

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.

Original languageEnglish
Article number085007
JournalAIP Advances
Volume6
Issue number8
DOIs
StatePublished - 1 Aug 2016
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2016 Author(s).

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