Broadband single-phase hyperbolic elastic metamaterials for super-resolution imaging

Abstract Hyperbolic metamaterials, the highly anisotropic subwavelength media, immensely widen the engineering feasibilities for wave manipulation. However, limited by the empirical structural topologies, the reported hyperbolic elastic metamaterials (HEMMs) suffer from the limitations of the relati...

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Autores principales:	Hao-Wen Dong, Sheng-Dong Zhao, Yue-Sheng Wang, Chuanzeng Zhang
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2018
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/26dfb0981abd41ce99a0be9a281169ee
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spelling	oai:doaj.org-article:26dfb0981abd41ce99a0be9a281169ee2021-12-02T15:07:50ZBroadband single-phase hyperbolic elastic metamaterials for super-resolution imaging10.1038/s41598-018-20579-82045-2322https://doaj.org/article/26dfb0981abd41ce99a0be9a281169ee2018-02-01T00:00:00Zhttps://doi.org/10.1038/s41598-018-20579-8https://doaj.org/toc/2045-2322Abstract Hyperbolic metamaterials, the highly anisotropic subwavelength media, immensely widen the engineering feasibilities for wave manipulation. However, limited by the empirical structural topologies, the reported hyperbolic elastic metamaterials (HEMMs) suffer from the limitations of the relatively narrow frequency width, inflexible adjustable operating subwavelength scale and difficulty to further improve the imaging resolution. Here, we show an inverse-design strategy for HEMMs by topology optimization. We design broadband single-phase HEMMs supporting multipolar resonances at different prescribed deep-subwavelength scales, and demonstrate the super-resolution imaging for longitudinal waves. Benefiting from the extreme enhancement of the evanescent waves, an optimized HEMM at an ultra-low frequency can yield an imaging resolution of ~λ/64, representing the record in the field of elastic metamaterials. The present research provides a novel and general design methodology for exploring the HEMMs with unrevealed mechanisms and guides the ultrasonography and general biomedical applications.Hao-Wen DongSheng-Dong ZhaoYue-Sheng WangChuanzeng ZhangNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 8, Iss 1, Pp 1-10 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Hao-Wen Dong Sheng-Dong Zhao Yue-Sheng Wang Chuanzeng Zhang Broadband single-phase hyperbolic elastic metamaterials for super-resolution imaging
description	Abstract Hyperbolic metamaterials, the highly anisotropic subwavelength media, immensely widen the engineering feasibilities for wave manipulation. However, limited by the empirical structural topologies, the reported hyperbolic elastic metamaterials (HEMMs) suffer from the limitations of the relatively narrow frequency width, inflexible adjustable operating subwavelength scale and difficulty to further improve the imaging resolution. Here, we show an inverse-design strategy for HEMMs by topology optimization. We design broadband single-phase HEMMs supporting multipolar resonances at different prescribed deep-subwavelength scales, and demonstrate the super-resolution imaging for longitudinal waves. Benefiting from the extreme enhancement of the evanescent waves, an optimized HEMM at an ultra-low frequency can yield an imaging resolution of ~λ/64, representing the record in the field of elastic metamaterials. The present research provides a novel and general design methodology for exploring the HEMMs with unrevealed mechanisms and guides the ultrasonography and general biomedical applications.
format	article
author	Hao-Wen Dong Sheng-Dong Zhao Yue-Sheng Wang Chuanzeng Zhang
author_facet	Hao-Wen Dong Sheng-Dong Zhao Yue-Sheng Wang Chuanzeng Zhang
author_sort	Hao-Wen Dong
title	Broadband single-phase hyperbolic elastic metamaterials for super-resolution imaging
title_short	Broadband single-phase hyperbolic elastic metamaterials for super-resolution imaging
title_full	Broadband single-phase hyperbolic elastic metamaterials for super-resolution imaging
title_fullStr	Broadband single-phase hyperbolic elastic metamaterials for super-resolution imaging
title_full_unstemmed	Broadband single-phase hyperbolic elastic metamaterials for super-resolution imaging
title_sort	broadband single-phase hyperbolic elastic metamaterials for super-resolution imaging
publisher	Nature Portfolio
publishDate	2018
url	https://doaj.org/article/26dfb0981abd41ce99a0be9a281169ee
work_keys_str_mv	AT haowendong broadbandsinglephasehyperbolicelasticmetamaterialsforsuperresolutionimaging AT shengdongzhao broadbandsinglephasehyperbolicelasticmetamaterialsforsuperresolutionimaging AT yueshengwang broadbandsinglephasehyperbolicelasticmetamaterialsforsuperresolutionimaging AT chuanzengzhang broadbandsinglephasehyperbolicelasticmetamaterialsforsuperresolutionimaging
_version_	1718388372581384192

Broadband single-phase hyperbolic elastic metamaterials for super-resolution imaging

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