Extreme stiffness hyperbolic elastic metamaterial for total transmission subwavelength imaging

Subwavelength imaging by metamaterials and extended work to pursue total transmission has been successfully demonstrated with electromagnetic and acoustic waves very recently. However, no elastic counterpart has been reported because earlier attempts suffer from considerable loss. Here, for the firs...

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Main Authors:	Lee, Hyuk, Oh, Joo Hwan, Seung, Hong Min, Cho, Seung Hyun, Kim, Yoon Young
Format:	Online
Language:	English
Published:	Nature Publishing Group 2016
Online Access:	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4819191/

id	pubmed-4819191
recordtype	oai_dc
spelling	pubmed-48191912016-04-06 Extreme stiffness hyperbolic elastic metamaterial for total transmission subwavelength imaging Lee, Hyuk Oh, Joo Hwan Seung, Hong Min Cho, Seung Hyun Kim, Yoon Young Article Subwavelength imaging by metamaterials and extended work to pursue total transmission has been successfully demonstrated with electromagnetic and acoustic waves very recently. However, no elastic counterpart has been reported because earlier attempts suffer from considerable loss. Here, for the first time, we realize an elastic hyperbolic metamaterial lens and experimentally show total transmission subwavelength imaging with measured wave field inside the metamaterial lens. The main idea is to compensate for the decreased impedance in the perforated elastic metamaterial by utilizing extreme stiffness, which has not been independently actualized in a continuum elastic medium so far. The fabricated elastic lens is capable of directly transferring subwavelength information from the input to the output boundary. In the experiment, this intriguing phenomenon is confirmed by scanning the elastic structures inside the lens with laser scanning vibrometer. The proposed elastic metamaterial lens will bring forth significant guidelines for ultrasonic imaging techniques. Nature Publishing Group 2016-04-04 /pmc/articles/PMC4819191/ /pubmed/27040762 http://dx.doi.org/10.1038/srep24026 Text en Copyright © 2016, Macmillan Publishers Limited http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
repository_type	Open Access Journal
institution_category	Foreign Institution
institution	US National Center for Biotechnology Information
building	NCBI PubMed
collection	Online Access
language	English
format	Online
author	Lee, Hyuk Oh, Joo Hwan Seung, Hong Min Cho, Seung Hyun Kim, Yoon Young
spellingShingle	Lee, Hyuk Oh, Joo Hwan Seung, Hong Min Cho, Seung Hyun Kim, Yoon Young Extreme stiffness hyperbolic elastic metamaterial for total transmission subwavelength imaging
author_facet	Lee, Hyuk Oh, Joo Hwan Seung, Hong Min Cho, Seung Hyun Kim, Yoon Young
author_sort	Lee, Hyuk
title	Extreme stiffness hyperbolic elastic metamaterial for total transmission subwavelength imaging
title_short	Extreme stiffness hyperbolic elastic metamaterial for total transmission subwavelength imaging
title_full	Extreme stiffness hyperbolic elastic metamaterial for total transmission subwavelength imaging
title_fullStr	Extreme stiffness hyperbolic elastic metamaterial for total transmission subwavelength imaging
title_full_unstemmed	Extreme stiffness hyperbolic elastic metamaterial for total transmission subwavelength imaging
title_sort	extreme stiffness hyperbolic elastic metamaterial for total transmission subwavelength imaging
description	Subwavelength imaging by metamaterials and extended work to pursue total transmission has been successfully demonstrated with electromagnetic and acoustic waves very recently. However, no elastic counterpart has been reported because earlier attempts suffer from considerable loss. Here, for the first time, we realize an elastic hyperbolic metamaterial lens and experimentally show total transmission subwavelength imaging with measured wave field inside the metamaterial lens. The main idea is to compensate for the decreased impedance in the perforated elastic metamaterial by utilizing extreme stiffness, which has not been independently actualized in a continuum elastic medium so far. The fabricated elastic lens is capable of directly transferring subwavelength information from the input to the output boundary. In the experiment, this intriguing phenomenon is confirmed by scanning the elastic structures inside the lens with laser scanning vibrometer. The proposed elastic metamaterial lens will bring forth significant guidelines for ultrasonic imaging techniques.
publisher	Nature Publishing Group
publishDate	2016
url	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4819191/
_version_	1613561522261327872

Extreme stiffness hyperbolic elastic metamaterial for total transmission subwavelength imaging

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