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Colloidal metasurfaces displaying near-ideal and tunable light absorbance in the infrared

Metasurfaces are ultrathin, two-dimensional arrays of subwavelength resonators that have been demonstrated to control the flow of light in ways that are otherwise unattainable with natural materials. These arrays are typically composed of metallic Ag or Au nanostructures shaped like split rings, nan...

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Detalles Bibliográficos
Autores principales: Rozin, Matthew J., Rosen, David A., Dill, Tyler J., Tao, Andrea R.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Pub. Group 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4557363/
https://www.ncbi.nlm.nih.gov/pubmed/26099835
http://dx.doi.org/10.1038/ncomms8325
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author Rozin, Matthew J.
Rosen, David A.
Dill, Tyler J.
Tao, Andrea R.
author_facet Rozin, Matthew J.
Rosen, David A.
Dill, Tyler J.
Tao, Andrea R.
author_sort Rozin, Matthew J.
collection PubMed
description Metasurfaces are ultrathin, two-dimensional arrays of subwavelength resonators that have been demonstrated to control the flow of light in ways that are otherwise unattainable with natural materials. These arrays are typically composed of metallic Ag or Au nanostructures shaped like split rings, nanowire pairs or nanorods (commonly referred to as meta-atoms) that are arranged to produce a collective optical response spanning an impressive range of properties, from the perfect absorption of incident light to superresolution imaging. However, metasurfaces pose major challenges in their fabrication over large areas, which can be prohibitively expensive and time consuming using conventional nanolithography techniques. Here we show that differently shaped colloidal nanocrystals can be organized into metasurface architectures using robust, scalable assembly methods. These metasurfaces exhibit extreme in-plane electromagnetic coupling that is strongly dependent on nanocrystal size, shape and spacing. Colloidal metasurfaces that display near-ideal electromagnetic absorbance can be tuned from the visible into the mid-infrared wavelengths.
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spelling pubmed-45573632015-09-11 Colloidal metasurfaces displaying near-ideal and tunable light absorbance in the infrared Rozin, Matthew J. Rosen, David A. Dill, Tyler J. Tao, Andrea R. Nat Commun Article Metasurfaces are ultrathin, two-dimensional arrays of subwavelength resonators that have been demonstrated to control the flow of light in ways that are otherwise unattainable with natural materials. These arrays are typically composed of metallic Ag or Au nanostructures shaped like split rings, nanowire pairs or nanorods (commonly referred to as meta-atoms) that are arranged to produce a collective optical response spanning an impressive range of properties, from the perfect absorption of incident light to superresolution imaging. However, metasurfaces pose major challenges in their fabrication over large areas, which can be prohibitively expensive and time consuming using conventional nanolithography techniques. Here we show that differently shaped colloidal nanocrystals can be organized into metasurface architectures using robust, scalable assembly methods. These metasurfaces exhibit extreme in-plane electromagnetic coupling that is strongly dependent on nanocrystal size, shape and spacing. Colloidal metasurfaces that display near-ideal electromagnetic absorbance can be tuned from the visible into the mid-infrared wavelengths. Nature Pub. Group 2015-06-23 /pmc/articles/PMC4557363/ /pubmed/26099835 http://dx.doi.org/10.1038/ncomms8325 Text en Copyright © 2015, Nature Publishing Group, a division of Macmillan Publishers Limited. All Rights Reserved. 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/
spellingShingle Article
Rozin, Matthew J.
Rosen, David A.
Dill, Tyler J.
Tao, Andrea R.
Colloidal metasurfaces displaying near-ideal and tunable light absorbance in the infrared
title Colloidal metasurfaces displaying near-ideal and tunable light absorbance in the infrared
title_full Colloidal metasurfaces displaying near-ideal and tunable light absorbance in the infrared
title_fullStr Colloidal metasurfaces displaying near-ideal and tunable light absorbance in the infrared
title_full_unstemmed Colloidal metasurfaces displaying near-ideal and tunable light absorbance in the infrared
title_short Colloidal metasurfaces displaying near-ideal and tunable light absorbance in the infrared
title_sort colloidal metasurfaces displaying near-ideal and tunable light absorbance in the infrared
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4557363/
https://www.ncbi.nlm.nih.gov/pubmed/26099835
http://dx.doi.org/10.1038/ncomms8325
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