Deep subwavelength ultrasonic imaging using optimized holey structured metamaterials

Abstract 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 simu...

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Autores principales:	Kiran Kumar Amireddy, Krishnan Balasubramaniam, Prabhu Rajagopal
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/498d432f316c40d985f6374cea6577fe
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spelling	oai:doaj.org-article:498d432f316c40d985f6374cea6577fe2021-12-02T12:30:35ZDeep subwavelength ultrasonic imaging using optimized holey structured metamaterials10.1038/s41598-017-08036-42045-2322https://doaj.org/article/498d432f316c40d985f6374cea6577fe2017-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-08036-4https://doaj.org/toc/2045-2322Abstract 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.Kiran Kumar AmireddyKrishnan BalasubramaniamPrabhu RajagopalNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-8 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Kiran Kumar Amireddy Krishnan Balasubramaniam Prabhu Rajagopal Deep subwavelength ultrasonic imaging using optimized holey structured metamaterials
description	Abstract 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.
format	article
author	Kiran Kumar Amireddy Krishnan Balasubramaniam Prabhu Rajagopal
author_facet	Kiran Kumar Amireddy Krishnan Balasubramaniam Prabhu Rajagopal
author_sort	Kiran Kumar Amireddy
title	Deep subwavelength ultrasonic imaging using optimized holey structured metamaterials
title_short	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_sort	deep subwavelength ultrasonic imaging using optimized holey structured metamaterials
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/498d432f316c40d985f6374cea6577fe
work_keys_str_mv	AT kirankumaramireddy deepsubwavelengthultrasonicimagingusingoptimizedholeystructuredmetamaterials AT krishnanbalasubramaniam deepsubwavelengthultrasonicimagingusingoptimizedholeystructuredmetamaterials AT prabhurajagopal deepsubwavelengthultrasonicimagingusingoptimizedholeystructuredmetamaterials
_version_	1718394331230896128

Deep subwavelength ultrasonic imaging using optimized holey structured metamaterials

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