Fig. 4From: Direct Growth of Feather-Like ZnO Structures by a Facile Solution Technique for Photo-Detecting ApplicationThe schematic diagram of formation processes for ZnO hierarchical structures: a the trunk formation of ZnO nano-sheets; b secondary heterogeneous nucleation and growth of branches; c the continuously growth of primary nano-sheets and secondary nano-branches constructs the feather-like ZnO hierarchical structuresBack to article page