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Real-space imaging of acoustic plasmons in large-area graphene grown by chemical vapor deposition
An acoustic plasmon mode in a graphene-dielectric-metal structure has recently been spotlighted as a superior platform for strong light-matter interaction. It originates from the coupling of graphene plasmon with its mirror image and exhibits the largest field confinement in the limit of a sub-nm-th...
Autores principales: | , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7895983/ https://www.ncbi.nlm.nih.gov/pubmed/33608541 http://dx.doi.org/10.1038/s41467-021-21193-5 |
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author | Menabde, Sergey G. Lee, In-Ho Lee, Sanghyub Ha, Heonhak Heiden, Jacob T. Yoo, Daehan Kim, Teun-Teun Low, Tony Lee, Young Hee Oh, Sang-Hyun Jang, Min Seok |
author_facet | Menabde, Sergey G. Lee, In-Ho Lee, Sanghyub Ha, Heonhak Heiden, Jacob T. Yoo, Daehan Kim, Teun-Teun Low, Tony Lee, Young Hee Oh, Sang-Hyun Jang, Min Seok |
author_sort | Menabde, Sergey G. |
collection | PubMed |
description | An acoustic plasmon mode in a graphene-dielectric-metal structure has recently been spotlighted as a superior platform for strong light-matter interaction. It originates from the coupling of graphene plasmon with its mirror image and exhibits the largest field confinement in the limit of a sub-nm-thick dielectric. Although recently detected in the far-field regime, optical near-fields of this mode are yet to be observed and characterized. Here, we demonstrate a direct optical probing of the plasmonic fields reflected by the edges of graphene via near-field scattering microscope, revealing a relatively small propagation loss of the mid-infrared acoustic plasmons in our devices that allows for their real-space mapping at ambient conditions even with unprotected, large-area graphene grown by chemical vapor deposition. We show an acoustic plasmon mode that is twice as confined and has 1.4 times higher figure of merit in terms of the normalized propagation length compared to the graphene surface plasmon under similar conditions. We also investigate the behavior of the acoustic graphene plasmons in a periodic array of gold nanoribbons. Our results highlight the promise of acoustic plasmons for graphene-based optoelectronics and sensing applications. |
format | Online Article Text |
id | pubmed-7895983 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-78959832021-03-03 Real-space imaging of acoustic plasmons in large-area graphene grown by chemical vapor deposition Menabde, Sergey G. Lee, In-Ho Lee, Sanghyub Ha, Heonhak Heiden, Jacob T. Yoo, Daehan Kim, Teun-Teun Low, Tony Lee, Young Hee Oh, Sang-Hyun Jang, Min Seok Nat Commun Article An acoustic plasmon mode in a graphene-dielectric-metal structure has recently been spotlighted as a superior platform for strong light-matter interaction. It originates from the coupling of graphene plasmon with its mirror image and exhibits the largest field confinement in the limit of a sub-nm-thick dielectric. Although recently detected in the far-field regime, optical near-fields of this mode are yet to be observed and characterized. Here, we demonstrate a direct optical probing of the plasmonic fields reflected by the edges of graphene via near-field scattering microscope, revealing a relatively small propagation loss of the mid-infrared acoustic plasmons in our devices that allows for their real-space mapping at ambient conditions even with unprotected, large-area graphene grown by chemical vapor deposition. We show an acoustic plasmon mode that is twice as confined and has 1.4 times higher figure of merit in terms of the normalized propagation length compared to the graphene surface plasmon under similar conditions. We also investigate the behavior of the acoustic graphene plasmons in a periodic array of gold nanoribbons. Our results highlight the promise of acoustic plasmons for graphene-based optoelectronics and sensing applications. Nature Publishing Group UK 2021-02-19 /pmc/articles/PMC7895983/ /pubmed/33608541 http://dx.doi.org/10.1038/s41467-021-21193-5 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 license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license 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 license, visit http://creativecommons.org/licenses/by/4.0/. |
spellingShingle | Article Menabde, Sergey G. Lee, In-Ho Lee, Sanghyub Ha, Heonhak Heiden, Jacob T. Yoo, Daehan Kim, Teun-Teun Low, Tony Lee, Young Hee Oh, Sang-Hyun Jang, Min Seok Real-space imaging of acoustic plasmons in large-area graphene grown by chemical vapor deposition |
title | Real-space imaging of acoustic plasmons in large-area graphene grown by chemical vapor deposition |
title_full | Real-space imaging of acoustic plasmons in large-area graphene grown by chemical vapor deposition |
title_fullStr | Real-space imaging of acoustic plasmons in large-area graphene grown by chemical vapor deposition |
title_full_unstemmed | Real-space imaging of acoustic plasmons in large-area graphene grown by chemical vapor deposition |
title_short | Real-space imaging of acoustic plasmons in large-area graphene grown by chemical vapor deposition |
title_sort | real-space imaging of acoustic plasmons in large-area graphene grown by chemical vapor deposition |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7895983/ https://www.ncbi.nlm.nih.gov/pubmed/33608541 http://dx.doi.org/10.1038/s41467-021-21193-5 |
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