Researchers apply nanoscale graphene ‘magic’ angle to
acoustics

Two atomically thin carbon sheets stacked on top of
each other, called bilayer graphene, exhibit unique properties when
one of the layers is twisted at a certain angle—a “magic” angle.
The study of magic and other angle misalignments between two layers
of material and their effects on material properties has been
dubbed twistronics, a rapidly expanding field of condensed matter
physics.