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
Autores principales:	Ekeroth, R.M.A., Lester, M., Scaffardi, L.B., Schinca, D.C.
Formato:	JOUR
Materias:	Coated nanoparticle Nanotubes Plasmons
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_15571955_v6_n3_p435_Ekeroth
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	todo:paper_15571955_v6_n3_p435_Ekeroth
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spelling	todo:paper_15571955_v6_n3_p435_Ekeroth2023-10-03T16:25:42Z Metallic Nanotubes Characterization via Surface Plasmon Excitation Ekeroth, R.M.A. Lester, M. Scaffardi, L.B. Schinca, D.C. 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar 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 Ekeroth, R.M.A. Lester, M. Scaffardi, L.B. Schinca, D.C. 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.
format	JOUR
author	Ekeroth, R.M.A. Lester, M. Scaffardi, L.B. Schinca, D.C.
author_facet	Ekeroth, R.M.A. Lester, M. Scaffardi, L.B. Schinca, D.C.
author_sort	Ekeroth, R.M.A.
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
url	http://hdl.handle.net/20.500.12110/paper_15571955_v6_n3_p435_Ekeroth
work_keys_str_mv	AT ekerothrma metallicnanotubescharacterizationviasurfaceplasmonexcitation AT lesterm metallicnanotubescharacterizationviasurfaceplasmonexcitation AT scaffardilb metallicnanotubescharacterizationviasurfaceplasmonexcitation AT schincadc metallicnanotubescharacterizationviasurfaceplasmonexcitation
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Metallic Nanotubes Characterization via Surface Plasmon Excitation

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