Extended Data Fig. 8: Classifying the shape of twisted few-layer graphene by the orientations of fold-over wrinkles.

(a) Schematic of the case which has two segments of cracked wrinkle with (10°, 10°) orientation to zigzag direction of basal layer, the radial arrows indicate normal direction of zigzag edge in each layer. The layers with same orientation are labelled by same alphabet (A, B, …). (b–d) the snapshots in growth simulation of graphene corresponding to schematic (a). (e,f) Top view and side view of the final structure corresponding to schematic (a). (g) Schematic of the case which has two segments of wrinkle with (10°, 20°) orientation. (h–j) The snapshots in growth simulation of graphene corresponding to schematic (g); (k,l) top view and side view of the final structure corresponding to schematic (g). (m) Schematic of the case which has three segments of wrinkle with (-5°, 10°, -5°) orientation; (n–p) the snapshots in growth simulation of graphene corresponding to schematic (m); (q,r) top view and side view of the final structure corresponding to schematic (m). (s) Schematic of the case which has three segments of wrinkle with (-5°, 10°, 20°) orientation; (t–v) the snapshots in growth simulation of graphene corresponding to schematic (s); (w,x) Top view and side view of the final structure corresponding to schematic (s).