Fig. 1: AFM images after conventional cooling.
From: Self-limited monolayer graphene growth on SiC with propane-hydrogen CVD
The samples were obtained with growth times ranging from 1 min (a) to 15 min (f), and conventional cooling, i.e. under hydrogen and argon. The rough surface in (a) is that of SiC. The wrinkles in images (b) and (c) reveal the presence of graphene and suggest that its interface with SiC is hydrogenated. The smoother surfaces in (e) and (f) are those generally obtained after a complete graphene growth. Vertical scale (dark to bright contrast) is Δz = 3 nm for all AFM images.
