Thermal Annealing of Exfoliated Graphene

Figure 4

The 2D peaks of graphene M1 (a) and M2 (b) after each annealing step; the FWHM (black) of 2D peak and the intensity ratio (red) of the 2D peak and G peak for graphene M1 (c) and M2 (d) (colors online).

(a)

(b)

(c)

(d)