Figure 4: Another typical GB with a 3° misorientation.
From: Bandgap tunability at single-layer molybdenum disulphide grain boundaries

(a) Atomically resolved STM image of grains III and IV. The dashed arrows denote their crystal lattice directions, and the solid arrows denote the Moiré superstructure (12 × 4 nm2; VTip=0.4 V). STS spectra measured at the triangles are shown in b. The bandgap decreases to 2.23 eV at the GB (set point: VTip=−0.8 V, ITip=80 pA).