Nanoporous gold nanoleaf as tunable metamaterial

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 broade...

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Autores principales: Rout, Sangeeta, Qi, Zhen, Biener, Monika M., Courtwright, Devon, Adrien, Jakeem C., Mills, Ezekiel, Shahabuddin, Mohammad, Noginova, Natalia, Noginov, Mikhail A.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2021
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7815877/
https://www.ncbi.nlm.nih.gov/pubmed/33469054
http://dx.doi.org/10.1038/s41598-021-81128-4
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author Rout, Sangeeta
Qi, Zhen
Biener, Monika M.
Courtwright, Devon
Adrien, Jakeem C.
Mills, Ezekiel
Shahabuddin, Mohammad
Noginova, Natalia
Noginov, Mikhail A.
author_facet Rout, Sangeeta
Qi, Zhen
Biener, Monika M.
Courtwright, Devon
Adrien, Jakeem C.
Mills, Ezekiel
Shahabuddin, Mohammad
Noginova, Natalia
Noginov, Mikhail A.
author_sort Rout, Sangeeta
collection PubMed
description 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.
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spelling pubmed-78158772021-01-21 Nanoporous gold nanoleaf as tunable metamaterial Rout, Sangeeta Qi, Zhen Biener, Monika M. Courtwright, Devon Adrien, Jakeem C. Mills, Ezekiel Shahabuddin, Mohammad Noginova, Natalia Noginov, Mikhail A. Sci Rep Article 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. Nature Publishing Group UK 2021-01-19 /pmc/articles/PMC7815877/ /pubmed/33469054 http://dx.doi.org/10.1038/s41598-021-81128-4 Text en © The Author(s) 2021 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 licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence 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 licence, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Rout, Sangeeta
Qi, Zhen
Biener, Monika M.
Courtwright, Devon
Adrien, Jakeem C.
Mills, Ezekiel
Shahabuddin, Mohammad
Noginova, Natalia
Noginov, Mikhail A.
Nanoporous gold nanoleaf as tunable metamaterial
title 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_short Nanoporous gold nanoleaf as tunable metamaterial
title_sort nanoporous gold nanoleaf as tunable metamaterial
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7815877/
https://www.ncbi.nlm.nih.gov/pubmed/33469054
http://dx.doi.org/10.1038/s41598-021-81128-4
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