Open AccessPhotodeposition of Silver Can Result in Metal-Enhanced Fluorescence
Author(s) -
Chris D. Geddes,
Alexandr Parfenov,
Joseph R. Lakowicz
Publication year - 2003
Publication title -
applied spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.415
H-Index - 110
eISSN - 1943-3530
pISSN - 0003-7028
DOI - 10.1366/000370203321666542
Subject(s) - fluorescence , raman scattering , metal , raman spectroscopy , materials science , laser induced fluorescence , chemistry , microfluidics , photochemistry , indocyanine green , analytical chemistry (journal) , nanotechnology , optics , chromatography , physics , metallurgy
Chemically deposited silver particles are widely used for surface-enhanced Raman scattering (SERS) and more recently for surface-enhanced fluorescence (SEF), also known as metal-enhanced fluorescence (MEF). We now show that metallic silver deposited by laser illumination results in an approximately 7-fold increased intensity of locally bound indocyanine green. The increased intensity is accompanied by a decreased lifetime and increased photostability. These results demonstrate the possibility of photolithographic preparation of surfaces for enhanced fluorescence in microfluidics, medical diagnostics, and other applications.