Dye-assisted visualization of plasmon modes excited in single gold nanoplates

Keisuke Imaeda, Kohei Imura

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

We performed dye-assisted two-photon-excitation imaging of plasmon modes in single gold nanoplates using a scanning near-field optical microscope. We observed that the fluorescence from the dye molecules was excited by the two-photon process and was enhanced several-fold on the nanoplate compared to the bare substrate. Two-photon excitation images of the single nanoplate show unique spatial features that differ from the morphology of the sample. Using electromagnetic simulations, we assigned the observed spatial features to the plasmon mode resonantly excited by the dye fluorescence.

Original languageEnglish
Pages (from-to)179-184
Number of pages6
JournalChemical Physics Letters
Volume646
DOIs
Publication statusPublished - 2016 Feb 16

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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