Films of the two-dimensional material hexagonal boron nitride can be used to control light emission from materials, according to the Singapore-MIT Alliance for Research and Technology (Smart). The phenomenon involves the creation of ‘Moiré superlattices’ as two films are rotated with respect to one-another, and works at room temperature with films made from stacks of atoms around 100nm ...

This story continues at UV modulation by twisting crystal films

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