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Picture of the Day

Graphene with a twist

Two-dimensional materials such as graphene have unique electronic, magnetic, optical and mechanical properties that promise to drive innovation in areas from electronics to energy to materials to medicine. Columbia University researchers report a major advance that may revolutionize the field, a "twistronic" device whose characteristics can be varied by simply varying the angle between two different 2D layers placed on top of one another. The team demonstrates a novel device structure that not only gives unprecedented control over the angular orientation in twisted-layer devices, but also gives the ability to vary this angle in situ, so that the effects of twist angle on electronic, optical and mechanical properties can be studied in a single device.

Visit Website | Image credit: Philip Krantz/Krantz NanoArt