Figure 2.

Tapping-mode AFM image of nanoscale GO pieces using 0.5 mM silver ions for 24 h. a)nanoscale GO; (b) and (c) the high- resolution images of the labeled area in (a).

Wang et al. Nanoscale Research Letters 2013 8:226   doi:10.1186/1556-276X-8-226
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