Researchers have demonstrated proof of principle for a twisting technique using graphene/boron nitride heterostructures. They showed that their technique can control the rotation of the graphene, and demonstrated how the electrical, optical, and even mechanical properties of the device can be dynamically varied with this technique.
This fresh approach could lead to new kinds of electronic devices.
They structured the material to be rotated into the physical shape of a gear.
The tunable materials could work beyond graphene and boron nitride. There is a large class of 2D materials that can be integrated with one another, hosting a variety of intrinsic properties (metallic, insulating, semiconducting, magnetic, superconducting, etc.) Precisely how they couple and how these properties interplay is often dependent on the rotational angle.