Graphene


http://www.technologyreview.com/Nanotech/21098/?a=f



"...Strongest material: By depressing a sharp diamond probe into graphene until it broke, researchers established that the material is the strongest ever tested. This image, an illustration, shows the atomic structure of graphene, which is one atom thick and made up of carbon and hydrogen arranged in a chicken-wire-like mesh.
Credit: Jeffrey Kysar, Columbia University..."