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Flat acoustics with soft gradient-index metasurfaces
Recently, metasurfaces have been proven to be effective and compact devices for the design of arbitrary wavefronts. Metasurfaces are planar metamaterials with a subwavelength thickness that allows wavefront shaping by introducing in-plane variations, namely, gradients, in the spatial wave response o...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6329837/ https://www.ncbi.nlm.nih.gov/pubmed/30635556 http://dx.doi.org/10.1038/s41467-018-07990-5 |
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author | Jin, Yabin Kumar, Raj Poncelet, Olivier Mondain-Monval, Olivier Brunet, Thomas |
author_facet | Jin, Yabin Kumar, Raj Poncelet, Olivier Mondain-Monval, Olivier Brunet, Thomas |
author_sort | Jin, Yabin |
collection | PubMed |
description | Recently, metasurfaces have been proven to be effective and compact devices for the design of arbitrary wavefronts. Metasurfaces are planar metamaterials with a subwavelength thickness that allows wavefront shaping by introducing in-plane variations, namely, gradients, in the spatial wave response of these flat structures. Here we report a new class of acoustic gradient-index (GRIN) metasurfaces engineered from soft graded-porous silicone rubber with a high acoustic index for broadband ultrasonic three-dimensional wavefront shaping in water. The functionalities of these soft flat lenses are illustrated through various experiments, which demonstrate beam steering and beam focusing, as well as vortex beam generation in free space. These new GRIN metasurfaces may have important applications in various domains using designed ultrasonic fields (biomedical imaging, industrial non-destructive testing, contactless particle manipulation), since their fabrication is very straightforward with common polymer science engineering. |
format | Online Article Text |
id | pubmed-6329837 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-63298372019-01-15 Flat acoustics with soft gradient-index metasurfaces Jin, Yabin Kumar, Raj Poncelet, Olivier Mondain-Monval, Olivier Brunet, Thomas Nat Commun Article Recently, metasurfaces have been proven to be effective and compact devices for the design of arbitrary wavefronts. Metasurfaces are planar metamaterials with a subwavelength thickness that allows wavefront shaping by introducing in-plane variations, namely, gradients, in the spatial wave response of these flat structures. Here we report a new class of acoustic gradient-index (GRIN) metasurfaces engineered from soft graded-porous silicone rubber with a high acoustic index for broadband ultrasonic three-dimensional wavefront shaping in water. The functionalities of these soft flat lenses are illustrated through various experiments, which demonstrate beam steering and beam focusing, as well as vortex beam generation in free space. These new GRIN metasurfaces may have important applications in various domains using designed ultrasonic fields (biomedical imaging, industrial non-destructive testing, contactless particle manipulation), since their fabrication is very straightforward with common polymer science engineering. Nature Publishing Group UK 2019-01-11 /pmc/articles/PMC6329837/ /pubmed/30635556 http://dx.doi.org/10.1038/s41467-018-07990-5 Text en © The Author(s) 2019 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
spellingShingle | Article Jin, Yabin Kumar, Raj Poncelet, Olivier Mondain-Monval, Olivier Brunet, Thomas Flat acoustics with soft gradient-index metasurfaces |
title | Flat acoustics with soft gradient-index metasurfaces |
title_full | Flat acoustics with soft gradient-index metasurfaces |
title_fullStr | Flat acoustics with soft gradient-index metasurfaces |
title_full_unstemmed | Flat acoustics with soft gradient-index metasurfaces |
title_short | Flat acoustics with soft gradient-index metasurfaces |
title_sort | flat acoustics with soft gradient-index metasurfaces |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6329837/ https://www.ncbi.nlm.nih.gov/pubmed/30635556 http://dx.doi.org/10.1038/s41467-018-07990-5 |
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