Plasmonics

, 6:435

Metallic Nanotubes Characterization via Surface Plasmon Excitation

  • Ricardo Martin Abraham Ekeroth
  • Marcelo Lester
  • Lucía B. Scaffardi
  • Daniel C. Schinca
Article

DOI: 10.1007/s11468-011-9222-7

Cite this article as:
Ekeroth, R.M.A., Lester, M., Scaffardi, L.B. et al. Plasmonics (2011) 6: 435. doi:10.1007/s11468-011-9222-7

Abstract

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.

Keywords

Coated nanoparticle Plasmons Nanotubes 

Copyright information

© Springer Science+Business Media, LLC 2011

Authors and Affiliations

  • Ricardo Martin Abraham Ekeroth
    • 1
    • 2
  • Marcelo Lester
    • 1
    • 2
  • Lucía B. Scaffardi
    • 3
    • 4
  • Daniel C. Schinca
    • 3
    • 4
  1. 1.Grupo de Optica de Sólidos-ElphoInstituto de Física Arroyo SecoBuenos AiresArgentina
  2. 2.Facultad de Ciencias ExactasUniversidad Nacional del Centro de la Provincia de Buenos AiresBuenos AiresArgentina
  3. 3.Centro de Investigaciones Opticas (CIOp)CONICET La Plata-CICLa PlataArgentina
  4. 4.Departamento de Ciencias Básicas, Facultad de IngenieríaUniversidad Nacional de La PlataLa PlataArgentina

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