Nanoscopic Visualization of Fluorescence Excitation Probability on Two-dimensional Periodical Gold Nanohole Arrays

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Abstract

We visualized spatial distributions of fluorescence excitation probability on a two-dimensional periodical gold nanohole array using an aperture-type scanning near-field optical microscope. Near-field fluorescence excitation images of the array revealed that the fluorescence signal is locally enhanced at internal positions on the array depending on the radiative wavelength. We also found that the enhanced fluorescence was modulated spectrally as well as spatially.

Original languageEnglish
Pages (from-to)1119-1121
Number of pages3
JournalChemistry Letters
Volume48
Issue number9
DOIs
Publication statusPublished - 2019 Jan 1

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Keywords

  • Fluorescence
  • Metallic nanohole array
  • Near-field imaging

ASJC Scopus subject areas

  • Chemistry(all)

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