Figure 1.

FE-SEM images of the as-grown ZnO nanostructures on aluminum substrate in different stages. FE-SEM images of the as-grown ZnO nanostructures on aluminum substrate in different stages, the reaction times are (a) 5 min, (b) 15 min, (c) 30 min, (d) 60 min, (e) 90 min. (f) A high magnification and cross-sectional images (shown in the inset) of 2D ZnO nanoflake arrays.

Yao et al. Nanoscale Research Letters 2012 7:216   doi:10.1186/1556-276X-7-216
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