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Giant mid-IR resonant coupling to molecular vibrations in sub-nm gaps of plasmonic multilayer metafilms
Nanomaterials capable of confining light are desirable for enhancing spectroscopies such as Raman scattering, infrared absorption, and nonlinear optical processes. Plasmonic superlattices have shown the ability to host collective resonances in the mid-infrared, but require stringent fabrication proc...
Autores principales: | , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9508334/ https://www.ncbi.nlm.nih.gov/pubmed/36151089 http://dx.doi.org/10.1038/s41377-022-00943-0 |
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author | Arul, Rakesh Grys, David-Benjamin Chikkaraddy, Rohit Mueller, Niclas S. Xomalis, Angelos Miele, Ermanno Euser, Tijmen G. Baumberg, Jeremy J. |
author_facet | Arul, Rakesh Grys, David-Benjamin Chikkaraddy, Rohit Mueller, Niclas S. Xomalis, Angelos Miele, Ermanno Euser, Tijmen G. Baumberg, Jeremy J. |
author_sort | Arul, Rakesh |
collection | PubMed |
description | Nanomaterials capable of confining light are desirable for enhancing spectroscopies such as Raman scattering, infrared absorption, and nonlinear optical processes. Plasmonic superlattices have shown the ability to host collective resonances in the mid-infrared, but require stringent fabrication processes to create well-ordered structures. Here, we demonstrate how short-range-ordered Au nanoparticle multilayers on a mirror, self-assembled by a sub-nm molecular spacer, support collective plasmon-polariton resonances in the visible and infrared, continuously tunable beyond 11 µm by simply varying the nanoparticle size and number of layers. The resulting molecule-plasmon system approaches vibrational strong coupling, and displays giant Fano dip strengths, SEIRA enhancement factors ~ 10(6), light-matter coupling strengths g ~ 100 cm(−1), Purcell factors ~ 10(6), and mode volume compression factors ~ 10(8). The collective plasmon-polariton mode is highly robust to nanoparticle vacancy disorder and is sustained by the consistent gap size defined by the molecular spacer. Structural disorder efficiently couples light into the gaps between the multilayers and mirror, enabling Raman and infrared sensing of sub-picolitre sample volumes. |
format | Online Article Text |
id | pubmed-9508334 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-95083342022-09-25 Giant mid-IR resonant coupling to molecular vibrations in sub-nm gaps of plasmonic multilayer metafilms Arul, Rakesh Grys, David-Benjamin Chikkaraddy, Rohit Mueller, Niclas S. Xomalis, Angelos Miele, Ermanno Euser, Tijmen G. Baumberg, Jeremy J. Light Sci Appl Article Nanomaterials capable of confining light are desirable for enhancing spectroscopies such as Raman scattering, infrared absorption, and nonlinear optical processes. Plasmonic superlattices have shown the ability to host collective resonances in the mid-infrared, but require stringent fabrication processes to create well-ordered structures. Here, we demonstrate how short-range-ordered Au nanoparticle multilayers on a mirror, self-assembled by a sub-nm molecular spacer, support collective plasmon-polariton resonances in the visible and infrared, continuously tunable beyond 11 µm by simply varying the nanoparticle size and number of layers. The resulting molecule-plasmon system approaches vibrational strong coupling, and displays giant Fano dip strengths, SEIRA enhancement factors ~ 10(6), light-matter coupling strengths g ~ 100 cm(−1), Purcell factors ~ 10(6), and mode volume compression factors ~ 10(8). The collective plasmon-polariton mode is highly robust to nanoparticle vacancy disorder and is sustained by the consistent gap size defined by the molecular spacer. Structural disorder efficiently couples light into the gaps between the multilayers and mirror, enabling Raman and infrared sensing of sub-picolitre sample volumes. Nature Publishing Group UK 2022-09-23 /pmc/articles/PMC9508334/ /pubmed/36151089 http://dx.doi.org/10.1038/s41377-022-00943-0 Text en © The Author(s) 2022 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 Arul, Rakesh Grys, David-Benjamin Chikkaraddy, Rohit Mueller, Niclas S. Xomalis, Angelos Miele, Ermanno Euser, Tijmen G. Baumberg, Jeremy J. Giant mid-IR resonant coupling to molecular vibrations in sub-nm gaps of plasmonic multilayer metafilms |
title | Giant mid-IR resonant coupling to molecular vibrations in sub-nm gaps of plasmonic multilayer metafilms |
title_full | Giant mid-IR resonant coupling to molecular vibrations in sub-nm gaps of plasmonic multilayer metafilms |
title_fullStr | Giant mid-IR resonant coupling to molecular vibrations in sub-nm gaps of plasmonic multilayer metafilms |
title_full_unstemmed | Giant mid-IR resonant coupling to molecular vibrations in sub-nm gaps of plasmonic multilayer metafilms |
title_short | Giant mid-IR resonant coupling to molecular vibrations in sub-nm gaps of plasmonic multilayer metafilms |
title_sort | giant mid-ir resonant coupling to molecular vibrations in sub-nm gaps of plasmonic multilayer metafilms |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9508334/ https://www.ncbi.nlm.nih.gov/pubmed/36151089 http://dx.doi.org/10.1038/s41377-022-00943-0 |
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