Fig. 5From: Distance-Dependent Plasmon-Enhanced Fluorescence of Submonolayer Rhodamine 6G by Gold NanoparticlesElectric field enhancement (|E/E0|2) distribution images for Au NPs covered with PMMA at λ = 562 nm with the spacer thickness 2.5 nm (a), 4 nm (b), 9 nm (c) and 21 nm (d), while the dashed white circle represents Au NP. e The enhancement factors of the experimental fluorescence spectra (blue) and the simulated electric field (black) dependent on the PMMA spacer thicknessBack to article page