Metallic Nanotubes Characterization via Surface Plasmon Excitation

In this work, we show theoretical results of the behaviour of the extinction cross section as a function of the incident wavelength for metallic nanotubes (Nts) with a 2D core-shell structure. To calculate the optical response of the gold, silver and cooper system, an exact integral formalism is imp...

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Detalles Bibliográficos
Publicado: 2011
Materias:
Coated nanoparticle
Nanotubes
Plasmons
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15571955_v6_n3_p435_Ekeroth
http://hdl.handle.net/20.500.12110/paper_15571955_v6_n3_p435_Ekeroth
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_15571955_v6_n3_p435_Ekeroth
record_format dspace
spelling paper:paper_15571955_v6_n3_p435_Ekeroth2023-06-08T16:23:19Z Metallic Nanotubes Characterization via Surface Plasmon Excitation Coated nanoparticle Nanotubes Plasmons In this work, we show theoretical results of the behaviour of the extinction cross section as a function of the incident wavelength for metallic nanotubes (Nts) with a 2D core-shell structure. To calculate the optical response of the gold, silver and cooper system, an exact integral formalism is implemented. The method is based on Green's integral theorem, and it allows us to compute the electromagnetic field at any point in space. For a correct description of the constitutive parameters of the metallic shell, we introduce a corrective model for the dielectric function in terms of the shell thickness in the range 1 to 10 nm. In particular, we investigate the features of surface plasmons in metallic Nts, and in the cases of Au and Cu, the mechanisms of the interband transitions play a relevant role. In this paper, we show that a quasi-static approach is not sufficient to account the plasmon-plasmon interaction in Ag Nts. The aim of these studies is to characterize core size and shell thicknesses of the Nts by means of the surface plasmon resonance observed in the far field. © 2011 Springer Science+Business Media, LLC. 2011 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15571955_v6_n3_p435_Ekeroth http://hdl.handle.net/20.500.12110/paper_15571955_v6_n3_p435_Ekeroth
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Coated nanoparticle
Nanotubes
Plasmons
spellingShingle Coated nanoparticle
Nanotubes
Plasmons
Metallic Nanotubes Characterization via Surface Plasmon Excitation
topic_facet Coated nanoparticle
Nanotubes
Plasmons
description In this work, we show theoretical results of the behaviour of the extinction cross section as a function of the incident wavelength for metallic nanotubes (Nts) with a 2D core-shell structure. To calculate the optical response of the gold, silver and cooper system, an exact integral formalism is implemented. The method is based on Green's integral theorem, and it allows us to compute the electromagnetic field at any point in space. For a correct description of the constitutive parameters of the metallic shell, we introduce a corrective model for the dielectric function in terms of the shell thickness in the range 1 to 10 nm. In particular, we investigate the features of surface plasmons in metallic Nts, and in the cases of Au and Cu, the mechanisms of the interband transitions play a relevant role. In this paper, we show that a quasi-static approach is not sufficient to account the plasmon-plasmon interaction in Ag Nts. The aim of these studies is to characterize core size and shell thicknesses of the Nts by means of the surface plasmon resonance observed in the far field. © 2011 Springer Science+Business Media, LLC.
title Metallic Nanotubes Characterization via Surface Plasmon Excitation
title_short Metallic Nanotubes Characterization via Surface Plasmon Excitation
title_full Metallic Nanotubes Characterization via Surface Plasmon Excitation
title_fullStr Metallic Nanotubes Characterization via Surface Plasmon Excitation
title_full_unstemmed Metallic Nanotubes Characterization via Surface Plasmon Excitation
title_sort metallic nanotubes characterization via surface plasmon excitation
publishDate 2011
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15571955_v6_n3_p435_Ekeroth
http://hdl.handle.net/20.500.12110/paper_15571955_v6_n3_p435_Ekeroth
_version_ 1768544292382441472

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