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Active modulation of visible light with graphene-loaded ultrathin metal plasmonic antennas

Electro-optical modulation of visible and near-infrared light is important for a wide variety of applications, ranging from communications to sensing and smart windows. However, currently available approaches result in rather bulky devices, suffer from low integrability, and can hardly operate at th...

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Detalles Bibliográficos
Autores principales: Yu, Renwen, Pruneri, Valerio, García de Abajo, F. Javier
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4999885/
https://www.ncbi.nlm.nih.gov/pubmed/27561789
http://dx.doi.org/10.1038/srep32144
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author Yu, Renwen
Pruneri, Valerio
García de Abajo, F. Javier
author_facet Yu, Renwen
Pruneri, Valerio
García de Abajo, F. Javier
author_sort Yu, Renwen
collection PubMed
description Electro-optical modulation of visible and near-infrared light is important for a wide variety of applications, ranging from communications to sensing and smart windows. However, currently available approaches result in rather bulky devices, suffer from low integrability, and can hardly operate at the low power consumption levels and fast switching rates required by microelectronic drivers. Here we show that planar nanostructures patterned in ultrathin metal-graphene hybrid films sustain highly tunable plasmons in the visible and near-infrared spectral regions. Strong variations in the reflection and absorption of incident light take place when the plasmons are tuned on- and off-resonance with respect to externally incident light. As a result, a remarkable modulation depth (i.e., the maximum relative variation with/without graphene doping) exceeding 90% in transmission and even more dramatic in reflection (>600%) is predicted for graphene-loaded silver films of 1–5 nm thickness and currently attainable lateral dimensions. These new structures hold great potential for fast low-power electro-optical modulation.
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spelling pubmed-49998852016-09-07 Active modulation of visible light with graphene-loaded ultrathin metal plasmonic antennas Yu, Renwen Pruneri, Valerio García de Abajo, F. Javier Sci Rep Article Electro-optical modulation of visible and near-infrared light is important for a wide variety of applications, ranging from communications to sensing and smart windows. However, currently available approaches result in rather bulky devices, suffer from low integrability, and can hardly operate at the low power consumption levels and fast switching rates required by microelectronic drivers. Here we show that planar nanostructures patterned in ultrathin metal-graphene hybrid films sustain highly tunable plasmons in the visible and near-infrared spectral regions. Strong variations in the reflection and absorption of incident light take place when the plasmons are tuned on- and off-resonance with respect to externally incident light. As a result, a remarkable modulation depth (i.e., the maximum relative variation with/without graphene doping) exceeding 90% in transmission and even more dramatic in reflection (>600%) is predicted for graphene-loaded silver films of 1–5 nm thickness and currently attainable lateral dimensions. These new structures hold great potential for fast low-power electro-optical modulation. Nature Publishing Group 2016-08-26 /pmc/articles/PMC4999885/ /pubmed/27561789 http://dx.doi.org/10.1038/srep32144 Text en Copyright © 2016, The Author(s) 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
Yu, Renwen
Pruneri, Valerio
García de Abajo, F. Javier
Active modulation of visible light with graphene-loaded ultrathin metal plasmonic antennas
title Active modulation of visible light with graphene-loaded ultrathin metal plasmonic antennas
title_full Active modulation of visible light with graphene-loaded ultrathin metal plasmonic antennas
title_fullStr Active modulation of visible light with graphene-loaded ultrathin metal plasmonic antennas
title_full_unstemmed Active modulation of visible light with graphene-loaded ultrathin metal plasmonic antennas
title_short Active modulation of visible light with graphene-loaded ultrathin metal plasmonic antennas
title_sort active modulation of visible light with graphene-loaded ultrathin metal plasmonic antennas
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4999885/
https://www.ncbi.nlm.nih.gov/pubmed/27561789
http://dx.doi.org/10.1038/srep32144
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