A ball and stick model of the graphene-tungsten ditelluride-graphene stack used for imaging in the research.
University of Pennsylvania researchers are now among the first to produce a single, 3-atom-thick layer of a unique 2D material called tungsten ditelluride. Unlike other 2D materials, scientists believe tungsten ditelluride has what are called topological electronic states. This means that it can have many different properties not just one. When one thinks about 2D materials, graphene is probably the first that comes to mind. The tightly packed, atomically thin sheet of carbon first produced in 2004 has inspired countless avenues in research that could revolutionize everything from technology to drinking water...
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