Role of Substrate Roughness in ZnO Nanowire Arrays Growth by Hydrothermal Approach
Qiu-Hong Wang1,2, Chao-Long Tang1, Cheng-Ming Jiang1, Dan-Feng Du1, Feng Wang1,2, Jin-Hui Song1()

.

Fig. 2. a-f SEM images of the as-grown NW arrays on substrates presented in Fig. 1, accordingly, g-j schematic diagram demonstrating how morphology and orientation of ZnO NWs evolve with substrate roughness from flat to coarse