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Technological progress is driven by developments in material science.Breakthroughs can happen when a new type of material or new combinations of known materials with different dimensionality and functionality are created.Graphene, because of its many superior materials properties, has the opportunity to enable new products.[1] Graphene is just the first of a new class of two dimensional (2d) crystals, derived from layered bulk crystals.[2] The assembly of such 2d crystals (heterostructures) will provide a rich toolset for the creation of new, customised rnaterials.