Fig. 4From: Fabrication and Characterization of ZnO Nano-Clips by the Polyol-Mediated ProcessSEM images of ZnO samples from 0.01 M Zn(OAc)2·nH2O solution at 170 °C with reaction times of (a–c) 12 min and (d–f) 2.5 h. The inset of (c) is the local magnification of a nano-ring morphologyBack to article page