Journal
JOURNAL OF APPLIED PHYSICS
Volume 114, Issue 2, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4812569
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Funding
- National Science Foundation [CMMI-0825737]
- Natural Science Foundation for Outstanding Young Scientists in Shandong Province, China [JQ201002]
- Taishan Scholar Program
- Directorate For Engineering
- Div Of Civil, Mechanical, & Manufact Inn [0825737] Funding Source: National Science Foundation
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A combination of electron microscopy and in-situ x-ray diffraction is employed to study the thermal oxidation of brass (Cu0.7Zn0.3 alloy) in order to elucidate the mechanism of one-dimensional growth of ZnO nanostructures. Oxidation of the brass alloy results in the growth of a ZnO overlayer with ZnO nanowire formation on the ZnO layer. Increasing the oxidation temperature thickens the ZnO overlayer while suppressing ZnO nanowire formation on the top, which provides clear evidence that the formation of ZnO nanowires is related to a stress-driven mechanism that involves accumulation of compressive stress generated from the ZnO/Cu-Zn interfacial reaction and relaxation of the compressive stress by outward grain-boundary diffusion of Zn. (C) 2013 AIP Publishing LLC.
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