Extended Data Fig. 8: SAED images of SnS2/WSe2 vdW superlattice roll-ups with different chiral angles.
From: High-order superlattices by rolling up van der Waals heterostructures
The SAED patterns for different SnS2/WSe2 roll-ups clearly show the SnS2 diffraction pattern (red) and the WSe2 diffraction pattern (blue). The distance measured between spots further confirms that the lattice constant of WSe2 is 0.33 nm and that of SnS2 is 0.37 nm. The diffraction spots of SnS2 and WSe2 are well aligned, suggesting epitaxial growth of the heterostructure. The chiral angles are measured to be θ = 10° (a), θ = 15° (b), θ = 19° (c), θ = 22° (d), θ = 24° (e) and θ = 25° (f). Scale bars, 5 nm−1.
