Deep subwavelength ultrasonic imaging using optimized holey structured metamaterials

This paper reports the experimental demonstration of deep subwavelength ultrasonic imaging of defects in metallic samples with a feature size of λ/25 using holey-structured metamaterial lenses. Optimal dimensions of the metamaterial’s geometric parameters are determined using numerical simulation an...

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Autores principales: Amireddy, Kiran Kumar, Balasubramaniam, Krishnan, Rajagopal, Prabhu
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2017
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5552794/
https://www.ncbi.nlm.nih.gov/pubmed/28798469
http://dx.doi.org/10.1038/s41598-017-08036-4
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author Amireddy, Kiran Kumar
Balasubramaniam, Krishnan
Rajagopal, Prabhu
author_facet Amireddy, Kiran Kumar
Balasubramaniam, Krishnan
Rajagopal, Prabhu
author_sort Amireddy, Kiran Kumar
collection PubMed
description This paper reports the experimental demonstration of deep subwavelength ultrasonic imaging of defects in metallic samples with a feature size of λ/25 using holey-structured metamaterial lenses. Optimal dimensions of the metamaterial’s geometric parameters are determined using numerical simulation and the physics of wave propagation through holey lenses. The paper also shows how the extraordinary transmission capacity of holey structured metamaterials comes about by the coupling of higher frequencies in the incident ultrasonic wave field to resonant modes of the lens.
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spelling pubmed-55527942017-08-14 Deep subwavelength ultrasonic imaging using optimized holey structured metamaterials Amireddy, Kiran Kumar Balasubramaniam, Krishnan Rajagopal, Prabhu Sci Rep Article This paper reports the experimental demonstration of deep subwavelength ultrasonic imaging of defects in metallic samples with a feature size of λ/25 using holey-structured metamaterial lenses. Optimal dimensions of the metamaterial’s geometric parameters are determined using numerical simulation and the physics of wave propagation through holey lenses. The paper also shows how the extraordinary transmission capacity of holey structured metamaterials comes about by the coupling of higher frequencies in the incident ultrasonic wave field to resonant modes of the lens. Nature Publishing Group UK 2017-08-10 /pmc/articles/PMC5552794/ /pubmed/28798469 http://dx.doi.org/10.1038/s41598-017-08036-4 Text en © The Author(s) 2017 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
Amireddy, Kiran Kumar
Balasubramaniam, Krishnan
Rajagopal, Prabhu
Deep subwavelength ultrasonic imaging using optimized holey structured metamaterials
title Deep subwavelength ultrasonic imaging using optimized holey structured metamaterials
title_full Deep subwavelength ultrasonic imaging using optimized holey structured metamaterials
title_fullStr Deep subwavelength ultrasonic imaging using optimized holey structured metamaterials
title_full_unstemmed Deep subwavelength ultrasonic imaging using optimized holey structured metamaterials
title_short Deep subwavelength ultrasonic imaging using optimized holey structured metamaterials
title_sort deep subwavelength ultrasonic imaging using optimized holey structured metamaterials
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5552794/
https://www.ncbi.nlm.nih.gov/pubmed/28798469
http://dx.doi.org/10.1038/s41598-017-08036-4
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AT rajagopalprabhu deepsubwavelengthultrasonicimagingusingoptimizedholeystructuredmetamaterials

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