Can't get thinner than this: synthesis of atomically flat boron sheets

Since its rediscovery and characterization in 2004, graphene has been the focus of countless research efforts across multiple fields. It is a versatile material consisting of a two-dimensional (2-D) carbon network, a thin sheet of carbon that has a thickness of one atom. Graphene is not only stronger than the strongest steels, but also has a myriad of interesting chemical, electronic, and mechanical characteristics that has left scientists wondering if similar 2-D networks of other materials could have such useful properties.