Surface-Plasmon-Mediated Single-Molecule Fluorescence Through a Thin Metallic Film

We demonstrate that fluorescence of single molecules in the nanometric vicinity of a thin gold film can be effectively excited and detected through the film with an epi-illumination scanning confocal micro- scope. A full theoretical treatment of the fluorescence signal indicates that both excitation and emission are surface-plasmon mediated. Remarkably, the number of photons detectable from chromophores perpendicular to the interface is enhanced by the presence of the metal.


Published in:
Physical Review Letters, 94, 023005
Year:
2005
Publisher:
American Physical Society
ISSN:
0031-9007
Laboratories:




 Record created 2010-04-06, last modified 2018-09-13


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