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arXiv · 1606.05041

Making sound vortices by metasurfaces

Liping Ye·Chunyin Qiu·Jiuyang Lu·Kun Tang·Han Jia·Manzhu Ke·Shasha Peng·Zhengyou Liu
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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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Liping Ye, Chunyin Qiu, Jiuyang Lu, Kun Tang, Han Jia, Manzhu Ke, Shasha Peng, Zhengyou Liu. 2016-06-16. Making sound vortices by metasurfaces. https://arxiv.org/abs/1606.05041

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