Acoustic Bessel Vortex Beam by Quasi-Three-Dimensional Reflected Metasurfaces
Vortex beams have a typical characteristic of orbital angular momentum, which provides a new degree of freedom for information processing in remote communication and a form of non-contact manipulation for trapping particles. In acoustics, vortex beams are generally observed on the surface of a metam...
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MDPI AG
2021
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oai:doaj.org-article:e59c861f467443b8bcef002f621c660d2021-11-25T18:23:36ZAcoustic Bessel Vortex Beam by Quasi-Three-Dimensional Reflected Metasurfaces10.3390/mi121113882072-666Xhttps://doaj.org/article/e59c861f467443b8bcef002f621c660d2021-11-01T00:00:00Zhttps://www.mdpi.com/2072-666X/12/11/1388https://doaj.org/toc/2072-666XVortex beams have a typical characteristic of orbital angular momentum, which provides a new degree of freedom for information processing in remote communication and a form of non-contact manipulation for trapping particles. In acoustics, vortex beams are generally observed on the surface of a metamaterial structure or in a waveguide with a hard boundary owing to the characteristic of easy diffusion in free space. The realization of an acoustic vortex beam with a long-distance propagation in free space still remains a challenge. To overcome this, we report a type of acoustic Bessel vortex (ABV) beam created by a quasi-three-dimensional reflected metasurface in free space based on phase modulation. By using the Bessel and vortex phase profiles, we can realize an ABV beam with the high performances of both Bessel and vortex beams, and its effective propagation distance is larger than 9.2<i>λ</i> in free space. Beyond that, we discuss the bandwidth and topological charge of the ABV beam in detail, and the fractional bandwidth can reach about 0.28. The proposed ABV beam has the advantages of a high-performance vortex, long-distance propagation, and broad bandwidth, which provide a new pathway for designing multifunctional vortex devices with promising applications.Yin WangJiao QianJian-Ping XiaYong GeShou-Qi YuanHong-Xiang SunXiao-Jun LiuMDPI AGarticleacoustic wavevortex beamBessel beamacoustic metasurfacesphase modulationMechanical engineering and machineryTJ1-1570ENMicromachines, Vol 12, Iss 1388, p 1388 (2021) |
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DOAJ |
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acoustic wave vortex beam Bessel beam acoustic metasurfaces phase modulation Mechanical engineering and machinery TJ1-1570 |
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acoustic wave vortex beam Bessel beam acoustic metasurfaces phase modulation Mechanical engineering and machinery TJ1-1570 Yin Wang Jiao Qian Jian-Ping Xia Yong Ge Shou-Qi Yuan Hong-Xiang Sun Xiao-Jun Liu Acoustic Bessel Vortex Beam by Quasi-Three-Dimensional Reflected Metasurfaces |
| description |
Vortex beams have a typical characteristic of orbital angular momentum, which provides a new degree of freedom for information processing in remote communication and a form of non-contact manipulation for trapping particles. In acoustics, vortex beams are generally observed on the surface of a metamaterial structure or in a waveguide with a hard boundary owing to the characteristic of easy diffusion in free space. The realization of an acoustic vortex beam with a long-distance propagation in free space still remains a challenge. To overcome this, we report a type of acoustic Bessel vortex (ABV) beam created by a quasi-three-dimensional reflected metasurface in free space based on phase modulation. By using the Bessel and vortex phase profiles, we can realize an ABV beam with the high performances of both Bessel and vortex beams, and its effective propagation distance is larger than 9.2<i>λ</i> in free space. Beyond that, we discuss the bandwidth and topological charge of the ABV beam in detail, and the fractional bandwidth can reach about 0.28. The proposed ABV beam has the advantages of a high-performance vortex, long-distance propagation, and broad bandwidth, which provide a new pathway for designing multifunctional vortex devices with promising applications. |
| format |
article |
| author |
Yin Wang Jiao Qian Jian-Ping Xia Yong Ge Shou-Qi Yuan Hong-Xiang Sun Xiao-Jun Liu |
| author_facet |
Yin Wang Jiao Qian Jian-Ping Xia Yong Ge Shou-Qi Yuan Hong-Xiang Sun Xiao-Jun Liu |
| author_sort |
Yin Wang |
| title |
Acoustic Bessel Vortex Beam by Quasi-Three-Dimensional Reflected Metasurfaces |
| title_short |
Acoustic Bessel Vortex Beam by Quasi-Three-Dimensional Reflected Metasurfaces |
| title_full |
Acoustic Bessel Vortex Beam by Quasi-Three-Dimensional Reflected Metasurfaces |
| title_fullStr |
Acoustic Bessel Vortex Beam by Quasi-Three-Dimensional Reflected Metasurfaces |
| title_full_unstemmed |
Acoustic Bessel Vortex Beam by Quasi-Three-Dimensional Reflected Metasurfaces |
| title_sort |
acoustic bessel vortex beam by quasi-three-dimensional reflected metasurfaces |
| publisher |
MDPI AG |
| publishDate |
2021 |
| url |
https://doaj.org/article/e59c861f467443b8bcef002f621c660d |
| work_keys_str_mv |
AT yinwang acousticbesselvortexbeambyquasithreedimensionalreflectedmetasurfaces AT jiaoqian acousticbesselvortexbeambyquasithreedimensionalreflectedmetasurfaces AT jianpingxia acousticbesselvortexbeambyquasithreedimensionalreflectedmetasurfaces AT yongge acousticbesselvortexbeambyquasithreedimensionalreflectedmetasurfaces AT shouqiyuan acousticbesselvortexbeambyquasithreedimensionalreflectedmetasurfaces AT hongxiangsun acousticbesselvortexbeambyquasithreedimensionalreflectedmetasurfaces AT xiaojunliu acousticbesselvortexbeambyquasithreedimensionalreflectedmetasurfaces |
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