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Theoretical Study of Gold Nanoparticles Randomly Dispersed on a Dielectric/Gold Substrate

[Image: see text] We theoretically study random arrangements of cylindrical gold nanoparticles (NPs) deposited on a dielectric/gold substrate. We use two methods, namely the Finite Element Method (FEM) and the Coupled Dipole Approximation (CDA) method. The FEM is increasingly used to analyze the opt...

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Autores principales: Saison-Francioso, Ophélie, Lévêque, Gaëtan, Akjouj, Abdellatif, Pennec, Yan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2023
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10286086/
https://www.ncbi.nlm.nih.gov/pubmed/37360435
http://dx.doi.org/10.1021/acsomega.3c00342
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author Saison-Francioso, Ophélie
Lévêque, Gaëtan
Akjouj, Abdellatif
Pennec, Yan
author_facet Saison-Francioso, Ophélie
Lévêque, Gaëtan
Akjouj, Abdellatif
Pennec, Yan
author_sort Saison-Francioso, Ophélie
collection PubMed
description [Image: see text] We theoretically study random arrangements of cylindrical gold nanoparticles (NPs) deposited on a dielectric/gold substrate. We use two methods, namely the Finite Element Method (FEM) and the Coupled Dipole Approximation (CDA) method. The FEM is increasingly used to analyze the optical properties of NPs, but calculations for arrangements containing a large number of NPs have a high computational cost. On the contrary, the CDA has the advantage to drastically reduce the computation time and the memory demand compared to the FEM. Nevertheless, as the CDA involves modeling each NP as a single electric dipole through the polarizability tensor of a spheroidal-shaped NP, it may be an insufficiently accurate method. Therefore, the main purpose of this article is to verify the validity of using the CDA in order to analyze such a kind of nanosystems. Finally, we capitalize on this methodology to draw some tendencies between statistics of NPs’ distributions and the plasmonic properties.
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spelling pubmed-102860862023-06-23 Theoretical Study of Gold Nanoparticles Randomly Dispersed on a Dielectric/Gold Substrate Saison-Francioso, Ophélie Lévêque, Gaëtan Akjouj, Abdellatif Pennec, Yan ACS Omega [Image: see text] We theoretically study random arrangements of cylindrical gold nanoparticles (NPs) deposited on a dielectric/gold substrate. We use two methods, namely the Finite Element Method (FEM) and the Coupled Dipole Approximation (CDA) method. The FEM is increasingly used to analyze the optical properties of NPs, but calculations for arrangements containing a large number of NPs have a high computational cost. On the contrary, the CDA has the advantage to drastically reduce the computation time and the memory demand compared to the FEM. Nevertheless, as the CDA involves modeling each NP as a single electric dipole through the polarizability tensor of a spheroidal-shaped NP, it may be an insufficiently accurate method. Therefore, the main purpose of this article is to verify the validity of using the CDA in order to analyze such a kind of nanosystems. Finally, we capitalize on this methodology to draw some tendencies between statistics of NPs’ distributions and the plasmonic properties. American Chemical Society 2023-06-08 /pmc/articles/PMC10286086/ /pubmed/37360435 http://dx.doi.org/10.1021/acsomega.3c00342 Text en © 2023 The Authors. Published by American Chemical Society https://creativecommons.org/licenses/by-nc-nd/4.0/Permits non-commercial access and re-use, provided that author attribution and integrity are maintained; but does not permit creation of adaptations or other derivative works (https://creativecommons.org/licenses/by-nc-nd/4.0/).
spellingShingle Saison-Francioso, Ophélie
Lévêque, Gaëtan
Akjouj, Abdellatif
Pennec, Yan
Theoretical Study of Gold Nanoparticles Randomly Dispersed on a Dielectric/Gold Substrate
title Theoretical Study of Gold Nanoparticles Randomly Dispersed on a Dielectric/Gold Substrate
title_full Theoretical Study of Gold Nanoparticles Randomly Dispersed on a Dielectric/Gold Substrate
title_fullStr Theoretical Study of Gold Nanoparticles Randomly Dispersed on a Dielectric/Gold Substrate
title_full_unstemmed Theoretical Study of Gold Nanoparticles Randomly Dispersed on a Dielectric/Gold Substrate
title_short Theoretical Study of Gold Nanoparticles Randomly Dispersed on a Dielectric/Gold Substrate
title_sort theoretical study of gold nanoparticles randomly dispersed on a dielectric/gold substrate
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10286086/
https://www.ncbi.nlm.nih.gov/pubmed/37360435
http://dx.doi.org/10.1021/acsomega.3c00342
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