Figure 4.

Top view SEM images. Images of ZnO nanorods grown on ALD-ZnO films: (a) 40 nm, (b) 80 nm, (c) 120 nm, and (d) 180 nm.

SolĂ­s-Pomar et al. Nanoscale Research Letters 2011 6:524   doi:10.1186/1556-276X-6-524
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