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Plasmon Hybridizations in Compound Nanorod–Nanohole Arrays

This study shows that a hybridized plasmonic mode, represented by an additional transmission peak, in a compound structure consisting of a nanorod embedded in a nanohole can be effectively described as a quasi-dipole oscillator. When two nanorods are introduced into a nanohole, these two quasi-dipol...

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Autores principales: Razavi, Shahab, Zhao, Yiping
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10383225/
https://www.ncbi.nlm.nih.gov/pubmed/37513146
http://dx.doi.org/10.3390/nano13142135
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author Razavi, Shahab
Zhao, Yiping
author_facet Razavi, Shahab
Zhao, Yiping
author_sort Razavi, Shahab
collection PubMed
description This study shows that a hybridized plasmonic mode, represented by an additional transmission peak, in a compound structure consisting of a nanorod embedded in a nanohole can be effectively described as a quasi-dipole oscillator. When two nanorods are introduced into a nanohole, these two quasi-dipoles can couple and hybridize, giving rise to two additional transmission peaks in the enhanced optical transmission spectrum. The relative intensities of these peaks can be controlled by adjusting the incident polarization, while their separations can be tuned by modifying the length of the nanorods. The concept of quasi-dipoles in compound nanohole structures can be further extended to predict the coupling behavior of even more complex compound configurations, such as multiple nanorods within nanoholes, resulting in the generation of multiple hybridization states. Consequently, the shape and response of the transmission peaks can be precisely engineered. This strategy could be used to design nanohole-based metasurfaces for applications such as ultra-thin optical filters, waveplates, polarizers, etc.
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spelling pubmed-103832252023-07-30 Plasmon Hybridizations in Compound Nanorod–Nanohole Arrays Razavi, Shahab Zhao, Yiping Nanomaterials (Basel) Article This study shows that a hybridized plasmonic mode, represented by an additional transmission peak, in a compound structure consisting of a nanorod embedded in a nanohole can be effectively described as a quasi-dipole oscillator. When two nanorods are introduced into a nanohole, these two quasi-dipoles can couple and hybridize, giving rise to two additional transmission peaks in the enhanced optical transmission spectrum. The relative intensities of these peaks can be controlled by adjusting the incident polarization, while their separations can be tuned by modifying the length of the nanorods. The concept of quasi-dipoles in compound nanohole structures can be further extended to predict the coupling behavior of even more complex compound configurations, such as multiple nanorods within nanoholes, resulting in the generation of multiple hybridization states. Consequently, the shape and response of the transmission peaks can be precisely engineered. This strategy could be used to design nanohole-based metasurfaces for applications such as ultra-thin optical filters, waveplates, polarizers, etc. MDPI 2023-07-23 /pmc/articles/PMC10383225/ /pubmed/37513146 http://dx.doi.org/10.3390/nano13142135 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Razavi, Shahab
Zhao, Yiping
Plasmon Hybridizations in Compound Nanorod–Nanohole Arrays
title Plasmon Hybridizations in Compound Nanorod–Nanohole Arrays
title_full Plasmon Hybridizations in Compound Nanorod–Nanohole Arrays
title_fullStr Plasmon Hybridizations in Compound Nanorod–Nanohole Arrays
title_full_unstemmed Plasmon Hybridizations in Compound Nanorod–Nanohole Arrays
title_short Plasmon Hybridizations in Compound Nanorod–Nanohole Arrays
title_sort plasmon hybridizations in compound nanorod–nanohole arrays
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10383225/
https://www.ncbi.nlm.nih.gov/pubmed/37513146
http://dx.doi.org/10.3390/nano13142135
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