Differentiating surface and bulk interactions using localized surface plasmon resonances of gold nanorods

Neha Nehru, Eugenii U. Donev, Gazi M. Huda, Linliang Yu, Yinan Wei, J. Todd Hastings

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

We demonstrate a novel localized surface-plasmon resonance sensor that can distinguish surface binding interactions from interfering bulk effects. This is accomplished by utilizing the longitudinal and transverse plasmon modes of gold nanorods. We have investigated, both numerically and experimentally, the effect of change in background refractive index and surface binding on the two resonances of a gold nanorod on an indium tin oxide coated glass substrate.

Original languageEnglish
Pages (from-to)6905-6914
Number of pages10
JournalOptics Express
Volume20
Issue number7
DOIs
StatePublished - Mar 26 2012

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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