Plasmonics

, Volume 5, Issue 1, pp 99–104

Surface Plasmon Resonances of Metallic Nanostars/Nanoflowers for Surface-Enhanced Raman Scattering

  • Vincenzo Giannini
  • Rogelio Rodríguez-Oliveros
  • Jose A. Sánchez-Gil
Article
  • 384 Downloads

Abstract

We investigate theoretically the optical properties associated to plasmon resonances of metal nanowires with cross section given by low-order Chebyshev nanoparticles (like rounded-tip nanostars or nanoflowers). The impact of the nanoflower shape is analyzed for varying symmetry and deformation parameter through the spectral dependence of resonances and their corresponding near field distributions. Large field intensity enhancements are obtained at the gaps between petals, apart from the tips themselves, which make these nanostars/nanoflowers specially suitable to host molecules for surface-enhanced Raman scattering sensing applications.

Keywords

Surface plasmons Metal nanoparticles SERS 

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Copyright information

© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  • Vincenzo Giannini
    • 1
  • Rogelio Rodríguez-Oliveros
    • 1
  • Jose A. Sánchez-Gil
    • 1
  1. 1.Instituto de Estructura de la MateriaConsejo Superior de Investigaciones CientíficasMadridSpain
  2. 2.Center for NanophotonicsFOM Institute AMOLF, c/o Philips Research LaboratoriesEindhovenThe Netherlands

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