Extended Data Fig. 7: Selected-area electron diffraction (SAED) images of WSe2 roll-ups with different chiral angles.
From: High-order superlattices by rolling up van der Waals heterostructures
The measured distance between spots confirms that the lattice constant of WSe2 is 0.33 nm. The SAED patterns for different WSe2 roll-ups show distinct features, with two sets of hexagonal patterns with a rotation angle of 2θ, where θ is the chiral angle of the roll-up. The chiral angles of the four roll-ups are determined to be θ = 2.5° (a), θ = 8° (b), θ = 16° (c) and θ = 20.5° (d). Scale bars, 5 nm−1.
