963609.fig.003a
(a)
963609.fig.003b
(b)
963609.fig.003c
(c)
963609.fig.003d
(d)
Figure 3: AFM height images (250 nm × 250 nm) of Ag nanoparticles deposited on Si substrate at different target-substrate distances: (a) 10 cm, (b) 15 cm, and (c) 20 cm. (d) is AFM height image of bare Si substrate.