Photoirradiation Caused Controllable Wettability Switching of Sputtered Highly Aligned c-Axis-Oriented Zinc Oxide Columnar Films

Figure 5

Schematic diagrams illustrating the ZnO films with different scales of grain size induced by different deposition powers: (a) nanograin (50 and 75 W), (b) mixed nanograin and submicrograin (100 W), and (c) submicrograin (150 W) types, respectively.