Figure 1.

Tapping-mode AFM images of GO and nanoscale GO pieces. (a) GO, (b) Ag+, (c) Co2+, and (d) Ni2+ and corresponding profile analysis: (e) GO, (f) Ag+, (g) Co2+, and (h) Ni2+.

Wang et al. Nanoscale Research Letters 2013 8:226   doi:10.1186/1556-276X-8-226
Download authors' original image