Making sound vortices by metasurfaces

2016/06/16 by Liping Ye, Ye, Liping, Chunyin Qiu +13
Engineering · Materials Science · #Acoustic Wave Phenomena Research #Aerodynamics and Acoustics in Jet Flows #Classical Physics (physics.class-ph) #FOS: Physical sciences #Metamaterials and Metasurfaces Applications

paper · pdf · doi:10.48550/arxiv.1606.05041

openalex publication_date 2016/06/16 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

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.

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