Figure 4
Tuning the moiré period through fine adjustment of the twist angle. (a) Schematic of twisted bilayer graphene after atomic reconstruction. (b) Near-field infrared image of a typical twist bilayer graphene at high doping level. (c–f) A series of near-field infrared images of a twistable device at slightly different twist angles, showing a systematically increase of the moiré period. This is achieved by fine tuning of the twist angle using AFM tip. Scale bar: 100 nm.
