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Proceedings Paper

Spatially resolved enhancement of fluorescence and Raman scattering by Ag nanoparticle arrays
Author(s): Nic Cade; Tom Ritman-Meer; David Richards
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Paper 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. Spatial maps of the Raman scattering signal from molecules on the nanoparticles shows an enhancement of more than 5 orders of magnitude.

Paper Details

Date Published: 8 May 2008
PDF: 7 pages
Proc. SPIE 6988, Nanophotonics II, 69881A (8 May 2008); doi: 10.1117/12.786772
Show Author Affiliations
Nic Cade, King's College London (United Kingdom)
Tom Ritman-Meer, King's College London (United Kingdom)
David Richards, King's College London (United Kingdom)

Published in SPIE Proceedings Vol. 6988:
Nanophotonics II
David L. Andrews; Jean-Michel Nunzi; Andreas Ostendorf, Editor(s)

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