Abstract:
:We explore the spectral dependence of fluorescence enhancement and the associated lifetime modification of fluorescent molecules coupled to single metal nanoparticles. Fluorescence lifetime imaging microscopy and single-particle dark-field spectroscopy are combined to correlate the dependence of fluorescence lifetime reduction on the spectral overlap between the fluorescence emission and the localised surface plasmon (LSP) spectra of individual gold nanoparticles. A maximum lifetime reduction is observed when the fluorescence and LSP resonances coincide, with good agreement provided by numerical simulations. The explicit comparison between experiment and simulation, that we obtain, offers an insight into the spectral engineering of LSP mediated fluorescence and may lead to optimized application in sensing and biomedicine.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Li J,Krasavin AV,Webster L,Segovia P,Zayats AV,Richards Ddoi
10.1038/srep21349subject
Has Abstractpub_date
2016-02-15 00:00:00pages
21349issn
2045-2322pii
srep21349journal_volume
6pub_type
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