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(Funded by the U.S. Department of Energy and the National Science Foundation)
Scientists at Columbia University have demonstrated a new way to tune the properties of two-dimensional materials simply by adjusting the twist angle between them. The researchers built devices consisting of monolayer graphene encapsulated between two crystals of boron nitride and, by adjusting the relative twist angle between the layers, they were able to create multiple moiré patterns. Moiré patterns are of high interest to condensed matter physicists and materials scientists, who use them to change or generate new electronic material properties.
