Figure 1.

SEM images. (a) Cu2O grass-like nanoarchitectures, (b) ZnO flower-like nanoarchitectures, and (c) Al nanowires grown on Cu, Zn, and Al powders at 150°C under 55% to 75% humidity for 2, 7, and 10 days, respectively.

Hu et al. Nanoscale Research Letters 2014 9:116   doi:10.1186/1556-276X-9-116
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