Metallic nanoparticle arrays: a common substrate for both surface-enhanced Raman scattering and surface-enhanced infrared absorption.

Published

Journal Article

Nanoshell arrays have recently been found to possess ideal properties as a substrate for combining surface enhanced raman scattering (SERS) and surface enhanced infrared absorption (SEIRA) spectroscopies, with large field enhancements at the same spatial locations on the structure. For small interparticle distances, the multipolar plasmon resonances of individual nanoshells hybridize and form red-shifted bands, a relatively narrow band in the near-infrared (NIR) originating from quadrupolar nanoshell resonances enhancing SERS, and a very broadband in the mid-infrared (MIR) arising from dipolar resonances enhancing SEIRA. The large field enhancements in the MIR and at longer wavelengths are due to the lightning-rod effect and are well described with an electrostatic model.

Full Text

Cited Authors

  • Le, F; Brandl, DW; Urzhumov, YA; Wang, H; Kundu, J; Halas, NJ; Aizpurua, J; Nordlander, P

Published Date

  • April 2008

Published In

Volume / Issue

  • 2 / 4

Start / End Page

  • 707 - 718

PubMed ID

  • 19206602

Pubmed Central ID

  • 19206602

Electronic International Standard Serial Number (EISSN)

  • 1936-086X

International Standard Serial Number (ISSN)

  • 1936-0851

Digital Object Identifier (DOI)

  • 10.1021/nn800047e

Language

  • eng