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The tapping mode AFM images of the graphene samples deposited on new-delaminated mica at ambient condition as a function of mass ratio of CoCl2·6H2O to D113 resin: (a). RCo/R = 0.2, (b). RCo/R = 0.5 and (c). RCo/R = 1. The a1–c1 are the height profiles along the blue lines in (a–c). respectively.
