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Intrinsic luminescence blinking from plasmonic nanojunctions
Plasmonic nanojunctions, consisting of adjacent metal structures with nanometre gaps, can support localised plasmon resonances that boost light matter interactions and concentrate electromagnetic fields at the nanoscale. In this regime, the optical response of the system is governed by poorly unders...
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/PMC8139969/ https://www.ncbi.nlm.nih.gov/pubmed/34021133 http://dx.doi.org/10.1038/s41467-021-22679-y |
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author | Chen, Wen Roelli, Philippe Ahmed, Aqeel Verlekar, Sachin Hu, Huatian Banjac, Karla Lingenfelder, Magalí Kippenberg, Tobias J. Tagliabue, Giulia Galland, Christophe |
author_facet | Chen, Wen Roelli, Philippe Ahmed, Aqeel Verlekar, Sachin Hu, Huatian Banjac, Karla Lingenfelder, Magalí Kippenberg, Tobias J. Tagliabue, Giulia Galland, Christophe |
author_sort | Chen, Wen |
collection | PubMed |
description | Plasmonic nanojunctions, consisting of adjacent metal structures with nanometre gaps, can support localised plasmon resonances that boost light matter interactions and concentrate electromagnetic fields at the nanoscale. In this regime, the optical response of the system is governed by poorly understood dynamical phenomena at the frontier between the bulk, molecular and atomic scales. Here, we report ubiquitous spectral fluctuations in the intrinsic light emission from photo-excited gold nanojunctions, which we attribute to the light-induced formation of domain boundaries and quantum-confined emitters inside the noble metal. Our data suggest that photoexcited carriers and gold adatom - molecule interactions play key roles in triggering luminescence blinking. Surprisingly, this internal restructuring of the metal has no measurable impact on the Raman signal and scattering spectrum of the plasmonic cavity. Our findings demonstrate that metal luminescence offers a valuable proxy to investigate atomic fluctuations in plasmonic cavities, complementary to other optical and electrical techniques. |
format | Online Article Text |
id | pubmed-8139969 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-81399692021-06-03 Intrinsic luminescence blinking from plasmonic nanojunctions Chen, Wen Roelli, Philippe Ahmed, Aqeel Verlekar, Sachin Hu, Huatian Banjac, Karla Lingenfelder, Magalí Kippenberg, Tobias J. Tagliabue, Giulia Galland, Christophe Nat Commun Article Plasmonic nanojunctions, consisting of adjacent metal structures with nanometre gaps, can support localised plasmon resonances that boost light matter interactions and concentrate electromagnetic fields at the nanoscale. In this regime, the optical response of the system is governed by poorly understood dynamical phenomena at the frontier between the bulk, molecular and atomic scales. Here, we report ubiquitous spectral fluctuations in the intrinsic light emission from photo-excited gold nanojunctions, which we attribute to the light-induced formation of domain boundaries and quantum-confined emitters inside the noble metal. Our data suggest that photoexcited carriers and gold adatom - molecule interactions play key roles in triggering luminescence blinking. Surprisingly, this internal restructuring of the metal has no measurable impact on the Raman signal and scattering spectrum of the plasmonic cavity. Our findings demonstrate that metal luminescence offers a valuable proxy to investigate atomic fluctuations in plasmonic cavities, complementary to other optical and electrical techniques. Nature Publishing Group UK 2021-05-21 /pmc/articles/PMC8139969/ /pubmed/34021133 http://dx.doi.org/10.1038/s41467-021-22679-y Text en © The Author(s) 2021 https://creativecommons.org/licenses/by/4.0/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/ (https://creativecommons.org/licenses/by/4.0/) . |
spellingShingle | Article Chen, Wen Roelli, Philippe Ahmed, Aqeel Verlekar, Sachin Hu, Huatian Banjac, Karla Lingenfelder, Magalí Kippenberg, Tobias J. Tagliabue, Giulia Galland, Christophe Intrinsic luminescence blinking from plasmonic nanojunctions |
title | Intrinsic luminescence blinking from plasmonic nanojunctions |
title_full | Intrinsic luminescence blinking from plasmonic nanojunctions |
title_fullStr | Intrinsic luminescence blinking from plasmonic nanojunctions |
title_full_unstemmed | Intrinsic luminescence blinking from plasmonic nanojunctions |
title_short | Intrinsic luminescence blinking from plasmonic nanojunctions |
title_sort | intrinsic luminescence blinking from plasmonic nanojunctions |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8139969/ https://www.ncbi.nlm.nih.gov/pubmed/34021133 http://dx.doi.org/10.1038/s41467-021-22679-y |
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