Skip to main content
. 2018 Jul 4;7:29. doi: 10.1038/s41377-018-0027-8

Fig. 2. Distance-dependent fluorescence enhancement and spacer layer.

Fig. 2

a Schematic illustration showing a plasmonic patch with a polymer layer acting as a spacer between fluorophores and plasmonic nanostructures. The spacer thickness is optimized to achieve the maximum enhancement efficiency. b Fluorescence map of CW800 in the presence of plasmonic patches with increasing spacer layer thickness (TMPS and APTMS volume ratio is 0:0, 0:8, 0.25:8, 0.5:8, 1:8, 4:8, and 8:8 from left to right). c Fluorescence enhancement factor as a function of the spacer thickness (TMPS amount in the polymerization process). d AFM images of pristine Au nanorods (left) and Au nanorods with a polymer spacer (right) (TMPS and APTMS volume ratio of 4:8)