Abstract:ZnO microrods with inverted cone shape and nail-like shape were formed by thermal evaporation of ZnS powder and ZnS/Zn mixture under air atmosphere. No catalysts and substrates were used. When ZnS powder was used as a source material, ZnO crystals had an inverted hexagonal cone shape, where the diameter of the microrods increased gradually from about 10 μm at the bottom to 35 μm at the top. When a mixture of ZnS and Zn powders was used as a source material, the diameters of the ZnO microrods increased signi ca… Show more
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