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ZnO nanowires with variable aspect ratios and microstructures have been prepared by a hydrothermal reaction of Zn foil and Na 2 C 2 O 4 solution at 140°C. The ZnO nanowires are single crystalline with the wurtzite structure and grow in the [0001] direction, and their aspect ratios and microstructures can be changed by tuning the reaction time and the Na 2 C 2 ...
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