Journal
APPLIED PHYSICS LETTERS
Volume 85, Issue 18, Pages 4142-4144Publisher
AMER INST PHYSICS
DOI: 10.1063/1.1811774
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Spontaneous formation of ZnO dendritic nanowires has been achieved on the faceted surfaces of polyhedral Zn microcrystals by oxidizing the latter at 600 degreesC. Electron microscopy investigations reveal that all the dendritic branches are elongated in <11-20> directions within the +/-(0001) primary planes, forming two-dimensional web-like structure. Homoepitaxial interconnections are observed at the branch-to-arm and branch-to-branch regions, and the whole dendrites are wurtzite single crystals. The growth process of the dendritic nanowires is discussed, which is proposed to be a combination of self-catalytic liquid-solid and vapor-solid process. (C) 2004 American Institute of Physics.
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