Figure 8
Normalized PL spectra and enhancement factors corresponding to different sphere densities. The diameters of the microspheres are (a,e) 0.3 \(\mu \)m, (b,f) 0.86 \(\mu \)m, (c,g) 1 \(\mu \)m, (d,h) 1.7 \(\mu \)m.
Figure 8 | Scientific Reports
