Void Structures in Regularly Patterned ZnO Nanorods Grown with the Hydrothermal Method
Figure 7
(a) and (b) SEM images of a few fallen ZnO NRs showing either their bottom or top faces after the three-stage annealing process (the same condition as the sample in Figure 6(d)). (c) and (d) The corresponding BSEM images of parts (a) and (b), respectively.
