Figure 2From: Controllable synthesis of ZnO nanostructures on the Si substrate by a hydrothermal routeSEM images of ZnO nanostructures. They are grown on (a) bare Si substrate, the Si substrate coated with the seed layer deposited by (b) RF magnetron sputtering (40 nm in thickness) and (c) dip coating, at 0.05 M, at 95°C for 5 h (insets are corresponding cross-sectional images).Back to article page