Figure 6.

(a and b) Modified PCR_max and I_sat of plasmon-enhanced fluorescence for AuNRs coated with 30 nt docking strands (4 nm spacing) and (c and d) for AuNRs coated with 15 nt docking strands and near-end labeled imager (1.5 nm spacing). Note here that the simulated I_sat^* is normalized to the near-field intensity at the position of the fluorophore to be able to display both the measured and simulated values on the same y-axis, i.e., . In all graphs, red dots are experimental data points, and black dots are simulation results with lines as a guide to the eye. R² values are used to evaluate the fitting quality, and only curves with R² >0.995 are plotted. See the Supporting Information for full simulation details including the decay rates used in the simulations.