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Manipulating Acoustic Wavefront by Inhomogeneous Impedance and Steerable Extraordinary Reflection
We unveil the connection between the acoustic impedance along a flat surface and the reflected acoustic wavefront, in order to empower a wide wariety of novel applications in acoustic community. Our designed flat surface can generate double reflections: the ordinary reflection and the extraordinary...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group
2013
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3756330/ https://www.ncbi.nlm.nih.gov/pubmed/23985717 http://dx.doi.org/10.1038/srep02537 |
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author | Zhao, Jiajun Li, Baowen Chen, Zhining Qiu, Cheng-Wei |
author_facet | Zhao, Jiajun Li, Baowen Chen, Zhining Qiu, Cheng-Wei |
author_sort | Zhao, Jiajun |
collection | PubMed |
description | We unveil the connection between the acoustic impedance along a flat surface and the reflected acoustic wavefront, in order to empower a wide wariety of novel applications in acoustic community. Our designed flat surface can generate double reflections: the ordinary reflection and the extraordinary one whose wavefront is manipulated by the proposed impedance-governed generalized Snell's law of reflection (IGSL). IGSL is based on Green's function and integral equation, instead of Fermat's principle for optical wavefront manipulation. Remarkably, via the adjustment of the designed specific acoustic impedance, extraordinary reflection can be steered for unprecedented acoustic wavefront while that ordinary reflection can be surprisingly switched on or off. The realization of the complex discontinuity of the impedance surface has been proposed using Helmholtz resonators. |
format | Online Article Text |
id | pubmed-3756330 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2013 |
publisher | Nature Publishing Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-37563302013-08-29 Manipulating Acoustic Wavefront by Inhomogeneous Impedance and Steerable Extraordinary Reflection Zhao, Jiajun Li, Baowen Chen, Zhining Qiu, Cheng-Wei Sci Rep Article We unveil the connection between the acoustic impedance along a flat surface and the reflected acoustic wavefront, in order to empower a wide wariety of novel applications in acoustic community. Our designed flat surface can generate double reflections: the ordinary reflection and the extraordinary one whose wavefront is manipulated by the proposed impedance-governed generalized Snell's law of reflection (IGSL). IGSL is based on Green's function and integral equation, instead of Fermat's principle for optical wavefront manipulation. Remarkably, via the adjustment of the designed specific acoustic impedance, extraordinary reflection can be steered for unprecedented acoustic wavefront while that ordinary reflection can be surprisingly switched on or off. The realization of the complex discontinuity of the impedance surface has been proposed using Helmholtz resonators. Nature Publishing Group 2013-08-29 /pmc/articles/PMC3756330/ /pubmed/23985717 http://dx.doi.org/10.1038/srep02537 Text en Copyright © 2013, Macmillan Publishers Limited. All rights reserved http://creativecommons.org/licenses/by/3.0/ This work is licensed under a Creative Commons Attribution 3.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by/3.0/ |
spellingShingle | Article Zhao, Jiajun Li, Baowen Chen, Zhining Qiu, Cheng-Wei Manipulating Acoustic Wavefront by Inhomogeneous Impedance and Steerable Extraordinary Reflection |
title | Manipulating Acoustic Wavefront by Inhomogeneous Impedance and Steerable Extraordinary Reflection |
title_full | Manipulating Acoustic Wavefront by Inhomogeneous Impedance and Steerable Extraordinary Reflection |
title_fullStr | Manipulating Acoustic Wavefront by Inhomogeneous Impedance and Steerable Extraordinary Reflection |
title_full_unstemmed | Manipulating Acoustic Wavefront by Inhomogeneous Impedance and Steerable Extraordinary Reflection |
title_short | Manipulating Acoustic Wavefront by Inhomogeneous Impedance and Steerable Extraordinary Reflection |
title_sort | manipulating acoustic wavefront by inhomogeneous impedance and steerable extraordinary reflection |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3756330/ https://www.ncbi.nlm.nih.gov/pubmed/23985717 http://dx.doi.org/10.1038/srep02537 |
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