1 research outputs found
Programming moir\'e patterns in 2D materials by bending
Moir\'e superlattices in twisted two-dimensional materials have generated
tremendous excitement as a platform for achieving quantum properties on demand.
However, the moir\'e pattern is highly sensitive to the interlayer atomic
registry, and current assembly techniques suffer from imprecise control of the
average twist angle, spatial inhomogeneity in the local twist angle, and
distortions due to random strain. Here, we demonstrate a new way to manipulate
the moir\'e patterns in hetero- and homo-bilayers through in-plane bending of
monolayer ribbons, using the tip of an atomic force microscope. This technique
achieves continuous variation of twist angles with improved twist-angle
homogeneity and reduced random strain, resulting in moir\'e patterns with
highly tunable wavelength and ultra-low disorder. Our results pave the way for
detailed studies of ultra-low disorder moir\'e systems and the realization of
precise strain-engineered devices