Figure 1From: Metal ion-directed solution-phase tailoring: from large-area graphene oxide into nanoscale piecesTapping-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+.Back to article page