Nanoporous gold nanoleaf as tunable metamaterial

Abstract We have studied optical properties of single-layer and multi-fold nanoporous gold leaf (NPGL) metamaterials and observed highly unusual transmission spectra composed of two well-resolved peaks. We explain this phenomenon in terms of a surface plasmon absorption band positioned on the top of...

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Autores principales:	Sangeeta Rout, Zhen Qi, Monika M. Biener, Devon Courtwright, Jakeem C. Adrien, Ezekiel Mills, Mohammad Shahabuddin, Natalia Noginova, Mikhail A. Noginov
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/a21c4ff7f88b4bdd8a5939369cc71496
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spelling	oai:doaj.org-article:a21c4ff7f88b4bdd8a5939369cc714962021-12-02T13:48:53ZNanoporous gold nanoleaf as tunable metamaterial10.1038/s41598-021-81128-42045-2322https://doaj.org/article/a21c4ff7f88b4bdd8a5939369cc714962021-01-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-81128-4https://doaj.org/toc/2045-2322Abstract We have studied optical properties of single-layer and multi-fold nanoporous gold leaf (NPGL) metamaterials and observed highly unusual transmission spectra composed of two well-resolved peaks. We explain this phenomenon in terms of a surface plasmon absorption band positioned on the top of a broader transmission band, the latter being characteristic of both homogeneous “solid” and inhomogeneous “diluted” Au films. The transmission spectra of NPGL metamaterials were shown to be controlled by external dielectric environments, e.g. water and applied voltage in an electrochemical cell. This paves the road to numerous functionalities of the studied tunable and active metamaterials, including control of spontaneous emission, energy transfer and many others.Sangeeta RoutZhen QiMonika M. BienerDevon CourtwrightJakeem C. AdrienEzekiel MillsMohammad ShahabuddinNatalia NoginovaMikhail A. NoginovNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Sangeeta Rout Zhen Qi Monika M. Biener Devon Courtwright Jakeem C. Adrien Ezekiel Mills Mohammad Shahabuddin Natalia Noginova Mikhail A. Noginov Nanoporous gold nanoleaf as tunable metamaterial
description	Abstract We have studied optical properties of single-layer and multi-fold nanoporous gold leaf (NPGL) metamaterials and observed highly unusual transmission spectra composed of two well-resolved peaks. We explain this phenomenon in terms of a surface plasmon absorption band positioned on the top of a broader transmission band, the latter being characteristic of both homogeneous “solid” and inhomogeneous “diluted” Au films. The transmission spectra of NPGL metamaterials were shown to be controlled by external dielectric environments, e.g. water and applied voltage in an electrochemical cell. This paves the road to numerous functionalities of the studied tunable and active metamaterials, including control of spontaneous emission, energy transfer and many others.
format	article
author	Sangeeta Rout Zhen Qi Monika M. Biener Devon Courtwright Jakeem C. Adrien Ezekiel Mills Mohammad Shahabuddin Natalia Noginova Mikhail A. Noginov
author_facet	Sangeeta Rout Zhen Qi Monika M. Biener Devon Courtwright Jakeem C. Adrien Ezekiel Mills Mohammad Shahabuddin Natalia Noginova Mikhail A. Noginov
author_sort	Sangeeta Rout
title	Nanoporous gold nanoleaf as tunable metamaterial
title_short	Nanoporous gold nanoleaf as tunable metamaterial
title_full	Nanoporous gold nanoleaf as tunable metamaterial
title_fullStr	Nanoporous gold nanoleaf as tunable metamaterial
title_full_unstemmed	Nanoporous gold nanoleaf as tunable metamaterial
title_sort	nanoporous gold nanoleaf as tunable metamaterial
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/a21c4ff7f88b4bdd8a5939369cc71496
work_keys_str_mv	AT sangeetarout nanoporousgoldnanoleafastunablemetamaterial AT zhenqi nanoporousgoldnanoleafastunablemetamaterial AT monikambiener nanoporousgoldnanoleafastunablemetamaterial AT devoncourtwright nanoporousgoldnanoleafastunablemetamaterial AT jakeemcadrien nanoporousgoldnanoleafastunablemetamaterial AT ezekielmills nanoporousgoldnanoleafastunablemetamaterial AT mohammadshahabuddin nanoporousgoldnanoleafastunablemetamaterial AT natalianoginova nanoporousgoldnanoleafastunablemetamaterial AT mikhailanoginov nanoporousgoldnanoleafastunablemetamaterial
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Nanoporous gold nanoleaf as tunable metamaterial

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