Ultrafast vibrations of gold nanorings

T. A. Kelf, Y. Tanaka, O. Matsuda, E. M. Larsson, D. S. Sutherland, O. B. Wright*

*Corresponding author for this work

Research output: Contribution to journalArticle

52 Citations (Scopus)

Abstract

We investigate the vibrational modes of gold nanorings on a silica substrate with an ultrafast optical technique. By comparison with numerical simulations, we identify several resonances in the gigahertz range associated with axially symmetric deformations of the nanoring and substrate. We elucidate the corresponding mode shapes and find that the substrate plays an important role in determining the mode damping. This study demonstrates the need for a plasmonic nano-optics approach to understand the optical excitation and detection mechanisms for the vibrations of plasmonic nanostructures.

Original languageEnglish
Pages (from-to)3893-3898
Number of pages6
JournalNano Letters
Volume11
Issue number9
DOIs
Publication statusPublished - 14 Sep 2011

Keywords

  • gigahertz
  • Nanostructure
  • plasmonics
  • ring
  • ultrafast
  • vibrations

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    Kelf, T. A., Tanaka, Y., Matsuda, O., Larsson, E. M., Sutherland, D. S., & Wright, O. B. (2011). Ultrafast vibrations of gold nanorings. Nano Letters, 11(9), 3893-3898. https://doi.org/10.1021/nl202045z