Gap enhanced fluorescence as a road map for the detection of very weakly fluorescent emitters from visible to ultraviolet

Research output: Contribution to journalArticle

1 Citation (Scopus)
54 Downloads (Pure)

Abstract

We analyze the enhancement of the rates of both the emission and the far field radiation for dipoles placed in the gap between a metallic nanorod, or nanosphere, and a metallic substrate. For wavelengths between 150 nm and 650 nm, the response of the gapped nanostructures considered in this work is dominated by few principal modes of the nanoparticle, which include self- consistently the effect of the substrate. For wavelengths shorter than 370 nm, the far field radiative enhancements of aluminum nanostructures are significantly higher than those for gold or silver. With aluminum, bright mode resonances are tunable over tens or hundreds of nanometers by changing the size of the nanoparticle and have far field radiative enhancements of up to three orders of magnitude. These results provide a road map to label-free detection of many emitters too weakly fluorescent for present approaches.
Original languageEnglish
Article number14191
Number of pages12
JournalScientific Reports
Volume7
DOIs
Publication statusPublished - 27 Oct 2017

Keywords

  • nanostructures
  • nanoparticles
  • ultraviolet

Fingerprint Dive into the research topics of 'Gap enhanced fluorescence as a road map for the detection of very weakly fluorescent emitters from visible to ultraviolet'. Together they form a unique fingerprint.

  • Research Output

    • 1 Citations
    • 1 Article

    The effect of oxidation on the far-field scattering of aluminium patch antennae from visible to UV

    McArthur, D. & Papoff, F., 1 Jul 2019, In : International Journal of Optics. 2019, p. 1-5 5 p., 9687803.

    Research output: Contribution to journalArticle

    Open Access
    File
  • Cite this