Fig. 11From: Synthesis of ZnO/Si Hierarchical Nanowire Arrays for Photocatalyst ApplicationSEM images of sample ALD with and without the coating layer. a Pristine trees. b Trees coated by TiO2. c Trees coated by Ag. d Trees coated by Ag/TiO2. e Trees coated by TiO2/Ag. f Amplified image of trees coated by AgBack to article page