Plasmonic mode interferences and Fano resonances in Metal-Insulator- Metal nanostructured interface
Metal-insulator-metal systems exhibit a rich underlying physics leading to a high degree of tunability of their spectral properties. We performed a systematic study on a metal-insulator-nanostructured metal system with a thin 6 nm dielectric spacer and showed how the nanoparticle sizes and excitatio...
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Nature Publishing Group
2015
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| Online Access: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4585844/ |
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pubmed-45858442015-09-29 Plasmonic mode interferences and Fano resonances in Metal-Insulator- Metal nanostructured interface Nicolas, Rana Lévêque, Gaëtan Marae-Djouda, Joseph Montay, Guillame Madi, Yazid Plain, Jérôme Herro, Ziad Kazan, Michel Adam, Pierre-Michel Maurer, Thomas Article Metal-insulator-metal systems exhibit a rich underlying physics leading to a high degree of tunability of their spectral properties. We performed a systematic study on a metal-insulator-nanostructured metal system with a thin 6 nm dielectric spacer and showed how the nanoparticle sizes and excitation conditions lead to the tunability and coupling/decoupling of localized and delocalized plasmonic modes. We also experimentally evidenced a tunable Fano resonance in a broad spectral window 600 to 800 nm resulting from the interference of gap modes with white light broad band transmitted waves at the interface playing the role of the continuum. By varying the incident illumination angle shifts in the resonances give the possibility to couple or decouple the localized and delocalized modes and to induce a strong change of the asymmetric Fano profile. All these results were confirmed with a crossed comparison between experimental and theoretical measurements, confirming the nature of different modes. The high degree of control and tunability of this plasmonically rich system paves the way for designing and engineering of similar systems with numerous applications. In particular, sensing measurements were performed and a figure of merit of 3.8 was recorded ranking this sensor among the highest sensitive in this wavelength range. Nature Publishing Group 2015-09-24 /pmc/articles/PMC4585844/ /pubmed/26399425 http://dx.doi.org/10.1038/srep14419 Text en Copyright © 2015, Macmillan Publishers Limited 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/ |
| repository_type |
Open Access Journal |
| institution_category |
Foreign Institution |
| institution |
US National Center for Biotechnology Information |
| building |
NCBI PubMed |
| collection |
Online Access |
| language |
English |
| format |
Online |
| author |
Nicolas, Rana Lévêque, Gaëtan Marae-Djouda, Joseph Montay, Guillame Madi, Yazid Plain, Jérôme Herro, Ziad Kazan, Michel Adam, Pierre-Michel Maurer, Thomas |
| spellingShingle |
Nicolas, Rana Lévêque, Gaëtan Marae-Djouda, Joseph Montay, Guillame Madi, Yazid Plain, Jérôme Herro, Ziad Kazan, Michel Adam, Pierre-Michel Maurer, Thomas Plasmonic mode interferences and Fano resonances in Metal-Insulator- Metal nanostructured interface |
| author_facet |
Nicolas, Rana Lévêque, Gaëtan Marae-Djouda, Joseph Montay, Guillame Madi, Yazid Plain, Jérôme Herro, Ziad Kazan, Michel Adam, Pierre-Michel Maurer, Thomas |
| author_sort |
Nicolas, Rana |
| title |
Plasmonic mode interferences and Fano resonances in Metal-Insulator- Metal nanostructured interface |
| title_short |
Plasmonic mode interferences and Fano resonances in Metal-Insulator- Metal nanostructured interface |
| title_full |
Plasmonic mode interferences and Fano resonances in Metal-Insulator- Metal nanostructured interface |
| title_fullStr |
Plasmonic mode interferences and Fano resonances in Metal-Insulator- Metal nanostructured interface |
| title_full_unstemmed |
Plasmonic mode interferences and Fano resonances in Metal-Insulator- Metal nanostructured interface |
| title_sort |
plasmonic mode interferences and fano resonances in metal-insulator- metal nanostructured interface |
| description |
Metal-insulator-metal systems exhibit a rich underlying physics leading to a high degree of tunability of their spectral properties. We performed a systematic study on a metal-insulator-nanostructured metal system with a thin 6 nm dielectric spacer and showed how the nanoparticle sizes and excitation conditions lead to the tunability and coupling/decoupling of localized and delocalized plasmonic modes. We also experimentally evidenced a tunable Fano resonance in a broad spectral window 600 to 800 nm resulting from the interference of gap modes with white light broad band transmitted waves at the interface playing the role of the continuum. By varying the incident illumination angle shifts in the resonances give the possibility to couple or decouple the localized and delocalized modes and to induce a strong change of the asymmetric Fano profile. All these results were confirmed with a crossed comparison between experimental and theoretical measurements, confirming the nature of different modes. The high degree of control and tunability of this plasmonically rich system paves the way for designing and engineering of similar systems with numerous applications. In particular, sensing measurements were performed and a figure of merit of 3.8 was recorded ranking this sensor among the highest sensitive in this wavelength range. |
| publisher |
Nature Publishing Group |
| publishDate |
2015 |
| url |
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4585844/ |
| _version_ |
1613481028022697984 |