Fig. 3: Structural and spectroscopic characterization of small-angle twisted BLG.
From: Specific stacking angles of bilayer graphene grown on atomic-flat and -stepped Cu surfaces
a SEM images (left) and SAED patterns (right) of BLGs with 3°-, 4°-, and 5°-twisted stacking angle. The stacking angles of BLG are indicated by yellow dashed lines. b Raman spectra of SLG (black), AB-stacked BLG (red/AB-BLG), and 3° (blue/3°-BLG), 4° (green/4°-BLG), and 5° (purple/5°-BLG)-twisted BLG from bottom to top, respectively.
