is the first known true two-dimensional crystal. It can be represented as a single plane of graphite separated from the bulk crystal. It is estimated that graphene has a high mechanical stiffness and record high thermal conductivity. In 2010, Russian scientists A. K. Geim and K. S. Novoselov were awarded the Nobel prize in physics for "advanced experiments with the two-dimensional material – graphene". They are the first scientists who managed to get it in the laboratory way.
While it's completely invisible and only a single atom thick, graphene is the lightest, strongest, most conductive material ever discovered, and has the same potential to change life on Earth as stone, bronze and iron once did. Graphene is simply the thinnest possible layer of graphite, the stuff used to make pencils.