Liu Yan-Song, Yi Fu, Ramachandram Badugu, Joseph R Lakowicz, Xu Xiao-Liang
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Nanoscaled ZnO films used as enhanced substrates for fluorescence detection of dyes.
The ability of nanoscaled ZnO films to enhance fluorescence was studied. We found that the fluorescence intensities of Cy5, rhodamine 6G, and fluorescein can be enhanced about 10-fold on nanoscaled ZnO films as compared to that on glass substrates. The lifetimes of all samples were measured, and no obvious change in lifetime was observed for dyes on different substrates. The mechanism for the nanoscaled ZnO film enhanced fluorescence appears to be different from that for the metal-fluorophore systems.
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