Figure 2.

SEM and TEM images of Si NWAs prepared at different H2O2 concentrations. SEM images of Si NWAs prepared at different H2O2 concentrations: (a) 0.2, (b) 0.5, (c) 2, and (d) 5 M, and their enlarged images. The nanowires have diameters of 30 to 200 nm. (e) TEM image of porous Si NWAs prepared at 5 M H2O2 concentration.

Zhang et al. Nanoscale Research Letters 2013 8:277   doi:10.1186/1556-276X-8-277
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