Spatial imaging of modifications to fluorescence lifetime and intensity by individual Ag nanoparticles

T Ritman-Meer, N Cade, D Richards

Research output: Contribution to journalArticlepeer-review

28 Citations (Scopus)

Abstract

Highly ordered periodic arrays of silver nanoparticles have been fabricated which exhibit surface plasmon resonances in the visible spectrum. We demonstrate the ability of these structures to alter the fluorescence properties of vicinal dye molecules by providing an additional radiative decay channel. Using fluorescence lifetime imaging microscopy, we have created high resolution spatial maps of the molecular lifetime components; these show an order of magnitude increase in decay rate from a localized volume around the nanoparticles, resulting in a commensurate enhancement in the fluorescence emission intensity.
Original languageEnglish
Article number123122
Number of pages3
JournalAPPLIED PHYSICS LETTERS
Volume91
Issue number12
DOIs
Publication statusPublished - 2007

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