Largest perfect 2D crystal ever made from boron nitride

The largest perfect two-dimensional crystals of the insulator hexagonal boron nitride (hBN) and the semiconductor tungsten disulfide have been made by researchers in South Korea. The team that created the 9cm² wafers hope that, if production can be scaled up, they will find use in next generation electronics. By coupling 2D insulators and semiconductors with the 2D conductor graphene it should be possible to create electronics that are both flexible and thinner than conventional electronics.