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Tailoring of electromagnetic field localizations by two-dimensional graphene nanostructures

Graphene has great potential for enhancing light−matter interactions in a two-dimensional regime due to surface plasmons with low loss and strong light confinement. Further utilization of graphene in nanophotonics relies on the precise control of light localization properties. Here, we demonstrate t...

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Autores principales: Zheng, Ze-Bo, Li, Jun-Tao, Ma, Teng, Fang, Han-Lin, Ren, Wen-Cai, Chen, Jun, She, Jun-Cong, Zhang, Yu, Liu, Fei, Chen, Huan-Jun, Deng, Shao-Zhi, Xu, Ning-Sheng
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6061900/
https://www.ncbi.nlm.nih.gov/pubmed/30167201
http://dx.doi.org/10.1038/lsa.2017.57
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author Zheng, Ze-Bo
Li, Jun-Tao
Ma, Teng
Fang, Han-Lin
Ren, Wen-Cai
Chen, Jun
She, Jun-Cong
Zhang, Yu
Liu, Fei
Chen, Huan-Jun
Deng, Shao-Zhi
Xu, Ning-Sheng
author_facet Zheng, Ze-Bo
Li, Jun-Tao
Ma, Teng
Fang, Han-Lin
Ren, Wen-Cai
Chen, Jun
She, Jun-Cong
Zhang, Yu
Liu, Fei
Chen, Huan-Jun
Deng, Shao-Zhi
Xu, Ning-Sheng
author_sort Zheng, Ze-Bo
collection PubMed
description Graphene has great potential for enhancing light−matter interactions in a two-dimensional regime due to surface plasmons with low loss and strong light confinement. Further utilization of graphene in nanophotonics relies on the precise control of light localization properties. Here, we demonstrate the tailoring of electromagnetic field localizations in the mid-infrared region by precisely shaping the graphene into nanostructures with different geometries. We generalize the phenomenological cavity model and employ nanoimaging techniques to quantitatively calculate and experimentally visualize the two-dimensional electromagnetic field distributions within the nanostructures, which indicate that the electromagnetic field can be shaped into specific patterns depending on the shapes and sizes of the nanostructures. Furthermore, we show that the light localization performance can be further improved by reducing the sizes of the nanostructures, where a lateral confinement of λ(0)/180 of the incidence light can be achieved. The electromagnetic field localizations within a nanostructure with a specific geometry can also be modulated by chemical doping. Our strategies can, in principle, be generalized to other two-dimensional materials, therefore providing new degrees of freedom for designing nanophotonic components capable of tailoring two-dimensional light confinement over a broad wavelength range.
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spelling pubmed-60619002018-08-30 Tailoring of electromagnetic field localizations by two-dimensional graphene nanostructures Zheng, Ze-Bo Li, Jun-Tao Ma, Teng Fang, Han-Lin Ren, Wen-Cai Chen, Jun She, Jun-Cong Zhang, Yu Liu, Fei Chen, Huan-Jun Deng, Shao-Zhi Xu, Ning-Sheng Light Sci Appl Original Article Graphene has great potential for enhancing light−matter interactions in a two-dimensional regime due to surface plasmons with low loss and strong light confinement. Further utilization of graphene in nanophotonics relies on the precise control of light localization properties. Here, we demonstrate the tailoring of electromagnetic field localizations in the mid-infrared region by precisely shaping the graphene into nanostructures with different geometries. We generalize the phenomenological cavity model and employ nanoimaging techniques to quantitatively calculate and experimentally visualize the two-dimensional electromagnetic field distributions within the nanostructures, which indicate that the electromagnetic field can be shaped into specific patterns depending on the shapes and sizes of the nanostructures. Furthermore, we show that the light localization performance can be further improved by reducing the sizes of the nanostructures, where a lateral confinement of λ(0)/180 of the incidence light can be achieved. The electromagnetic field localizations within a nanostructure with a specific geometry can also be modulated by chemical doping. Our strategies can, in principle, be generalized to other two-dimensional materials, therefore providing new degrees of freedom for designing nanophotonic components capable of tailoring two-dimensional light confinement over a broad wavelength range. Nature Publishing Group 2017-10-06 /pmc/articles/PMC6061900/ /pubmed/30167201 http://dx.doi.org/10.1038/lsa.2017.57 Text en Copyright © 2017 The Author(s) http://creativecommons.org/licenses/by-nc-sa/4.0/ This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 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-nc-sa/4.0/
spellingShingle Original Article
Zheng, Ze-Bo
Li, Jun-Tao
Ma, Teng
Fang, Han-Lin
Ren, Wen-Cai
Chen, Jun
She, Jun-Cong
Zhang, Yu
Liu, Fei
Chen, Huan-Jun
Deng, Shao-Zhi
Xu, Ning-Sheng
Tailoring of electromagnetic field localizations by two-dimensional graphene nanostructures
title Tailoring of electromagnetic field localizations by two-dimensional graphene nanostructures
title_full Tailoring of electromagnetic field localizations by two-dimensional graphene nanostructures
title_fullStr Tailoring of electromagnetic field localizations by two-dimensional graphene nanostructures
title_full_unstemmed Tailoring of electromagnetic field localizations by two-dimensional graphene nanostructures
title_short Tailoring of electromagnetic field localizations by two-dimensional graphene nanostructures
title_sort tailoring of electromagnetic field localizations by two-dimensional graphene nanostructures
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6061900/
https://www.ncbi.nlm.nih.gov/pubmed/30167201
http://dx.doi.org/10.1038/lsa.2017.57
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