Applied Physics B

, 84:35 | Cite as

Plasmonic structure and electromagnetic field enhancements in the metallic nanoparticle-film system

Article

Abstract

We investigate the plasmonic structure of a metallic nanoparticle near a metallic thin film. We show that in the thin film limit, a virtual plasmon resonance composed of delocalized thin film plasmons is induced. We investigate how the physical properties of the virtual state depend on polarization, film thickness and nanoparticle-film separation. We show that the electromagnetic field enhancements associated with the virtual plasmon resonance are large, suggesting applications of metallic nanoparticle/thin film systems as substrates for surface enhanced spectroscopies and surface enhanced scanning probe microscopies.

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Copyright information

© Springer-Verlag 2006

Authors and Affiliations

  1. 1.Department of Physics and Astronomy, M.S. 61, Laboratory for NanophotonicsRice UniversityHoustonUSA

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