Spatially resolved enhancement of fluorescence and Raman scattering by Ag nanoparticle arrays

Nic Cade; Tom Ritman-Meer; David Richards

doi:10.1117/12.786772

8 May 2008 Spatially resolved enhancement of fluorescence and Raman scattering by Ag nanoparticle arrays

Nic Cade, Tom Ritman-Meer, David Richards

Proceedings Volume 6988, Nanophotonics II; 69881A (2008) https://doi.org/10.1117/12.786772
Event: SPIE Photonics Europe, 2008, Strasbourg, France

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.

Citation Download Citation

Nic Cade, Tom Ritman-Meer, and David Richards "Spatially resolved enhancement of fluorescence and Raman scattering by Ag nanoparticle arrays", Proc. SPIE 6988, Nanophotonics II, 69881A (8 May 2008); https://doi.org/10.1117/12.786772

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