Two-dimensional (2D) materials and van der Waals (vdW)
heterostructures are flexible materials with distinct atomic layers
beyond traditional units of lattice-matching requirements.
Nevertheless, the 2D van der Waals structures researchers have
hitherto explored are limited to relatively simple heterostructures
with a small number of blocks. It is exponentially more difficult
to prepare high-order vdW superlattices with a myriad of
alternating units due to their limited yield and the material
damage associated with restacking or synthesis.
