Formation of ZnO three-side teethed nanostructures

Three-side teethed feather-like nanocomb structures of ZnO were produced based on a vapor-phase transport process. ZnS powder was used as source material and Si substrate as a collector, at temperature ∼ 1100 °C. The morphology of the product showed a ribbon-like stem and nanoteeth array aligned evenly along three sides of the nanoribbon. It was found that the nanoribbon grew mainly along the [011¯¯0] direction, and the self-assembled branching nanoteeth grew epitaxially along the [0001], [0001¯] and [211¯¯0] orientations.