790323.fig.001
Figure 1: SEM images of the gold NPs with an average size of (a) 17 nm, (b) 30 nm, (c) 40 nm, (d) 50 nm, (e) 60 nm, and (f) 80 nm. The size histograms of the gold NPs with an average size of (g) 17 nm, (h) 30 nm, (i) 40 nm, (j) 50 nm, (k) 60 nm, and (l) 80 nm. The solid line in the size histograms is the simulation curve of Gaussian distribution.