At small angles of mismatch, the van der Waals interaction between graphene and the substrate hexagonal boron nitride on which it is placed or grown can create physical changes in the structure of the carbon sheet that help open up a small energy gap in it. This new finding, from an international team of researchers led by Andre Geim and Kostya Novoselov at the University of Manchester in the UK, could be an exciting new way to control and fine-tune the electronic properties of graphene devices…….
http://nanotechweb.org/cws/article/tech/57080
