Figure 2
From: An atomic carbon source for high temperature molecular beam epitaxy of graphene
AFM topography images showing the early stages of graphene island nucleation on hBN at a substrate temperature of 1400 °C. Images (a–c) show graphene islands grown for 5 h using the atomic carbon source and images (e–g) show graphene grown for 1 h with a carbon sublimation source. Images (c and g) show the region highlighted by the green boxes in images (b and f) respectively. The profiles in images (d and h) show a line profile across the positions indicated by the blue line in figs (b and f) respectively. The scale bars for the images are as follows; (a and e) 500 nm, (b and f) 50 nm, (c and g) 20 nm.
