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

F. D. Stefani, K. Vasilev, N. Bocchio, N. Stoyanova, M. Kreiter

Research output: Contribution to journalArticlepeer-review

132 Citations (Scopus)


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 mediatea. Remarkably, the number of photons detectable from chromophores perpendicular to the interface is enhanced by the presence of the metal.

Original languageEnglish
Article number023005
Number of pages4
JournalPhysical Review Letters
Issue number2
Publication statusPublished - 21 Jan 2005
Externally publishedYes


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