Thermal Annealing of Exfoliated Graphene

Figure 3

AFM topographic images of the graphene M2 after annealing in N₂/H₂ at 300°C (a) and 400°C (b); left part of the graphene M2 is monolayer (ML) and the right part is bilayer (BL). Scale bars are 300 nm in length (colors online).

(a)

(b)