Making sound vortices by metasurfaces
Classical Physics
2016-06-17 v1
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.
Keywords
Cite
@article{arxiv.1606.05041,
title = {Making sound vortices by metasurfaces},
author = {Liping Ye and Chunyin Qiu and Jiuyang Lu and Kun Tang and Han Jia and Manzhu Ke and Shasha Peng and Zhengyou Liu},
journal= {arXiv preprint arXiv:1606.05041},
year = {2016}
}