Enhanced fluorescence by metal nanospheres on metal substrates.
We investigate the metal enhanced fluorescence by silver nanospheres on a thin silver substrate. Experimental measurements for core/shell colloidal nanocrystals embedded in a polymer matrix show a fluorescence enhancement factor of about 9. We apply the discrete dipole approximation method to describe the local-field enhancement factor (LFEF). We find that the observed fluorescence enhancement is related to the broad LFEF profile induced by the substrate.
D'Agostino
Stefania
S
National Nanotechnology Laboratory of CNR-INFM, Research Unit of the Italian Institute of Technology, I-73100 Lecce, Italy.
Pompa
Pier Paolo
PP
Chiuri
Rocco
R
Phaneuf
Raymond J
RJ
Britti
Dominic G
DG
Rinaldi
Rosaria
R
Cingolani
Roberto
R
Della Sala
Fabio
F