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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...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8623545/ https://www.ncbi.nlm.nih.gov/pubmed/34832800 http://dx.doi.org/10.3390/mi12111388 |
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author | Wang, Yin Qian, Jiao Xia, Jian-Ping Ge, Yong Yuan, Shou-Qi Sun, Hong-Xiang Liu, Xiao-Jun |
author_facet | Wang, Yin Qian, Jiao Xia, Jian-Ping Ge, Yong Yuan, Shou-Qi Sun, Hong-Xiang Liu, Xiao-Jun |
author_sort | Wang, Yin |
collection | PubMed |
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 9.2λ 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 | Online Article Text |
id | pubmed-8623545 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-86235452021-11-27 Acoustic Bessel Vortex Beam by Quasi-Three-Dimensional Reflected Metasurfaces Wang, Yin Qian, Jiao Xia, Jian-Ping Ge, Yong Yuan, Shou-Qi Sun, Hong-Xiang Liu, Xiao-Jun Micromachines (Basel) Article 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 9.2λ 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. MDPI 2021-11-12 /pmc/articles/PMC8623545/ /pubmed/34832800 http://dx.doi.org/10.3390/mi12111388 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Wang, Yin Qian, Jiao Xia, Jian-Ping Ge, Yong Yuan, Shou-Qi Sun, Hong-Xiang Liu, Xiao-Jun Acoustic Bessel Vortex Beam by Quasi-Three-Dimensional Reflected Metasurfaces |
title | 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_short | Acoustic Bessel Vortex Beam by Quasi-Three-Dimensional Reflected Metasurfaces |
title_sort | acoustic bessel vortex beam by quasi-three-dimensional reflected metasurfaces |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8623545/ https://www.ncbi.nlm.nih.gov/pubmed/34832800 http://dx.doi.org/10.3390/mi12111388 |
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