Fig. 4.
a TEM image of caterpillar-like hierarchical nanostructure and corresponding SAED pattern as inset. b HRTEM and corresponding FFT images of a single ZnO NW. c XRD pattern of “caterpillar”- and water lily-like hierarchical structures
a TEM image of caterpillar-like hierarchical nanostructure and corresponding SAED pattern as inset. b HRTEM and corresponding FFT images of a single ZnO NW. c XRD pattern of “caterpillar”- and water lily-like hierarchical structures