Surface-plasmon-mediated single-molecule fluorescence through a thin metallic film.
Phys Rev Lett
; 94(2): 023005, 2005 Jan 21.
Article
in En
| MEDLINE
| ID: mdl-15698172
ABSTRACT
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 microscope. 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.
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Collection:
01-internacional
Database:
MEDLINE
Language:
En
Journal:
Phys Rev Lett
Year:
2005
Document type:
Article
Affiliation country:
Germany