Individual impurity atoms detectable in graphene
(PHYSorg.com Nanotechnology)

A team including physicists from the University of Basel has succeeded in using atomic force microscopy to obtain clear images of individual impurity atoms in graphene ribbons. Thanks to the forces measured in the graphene`s two-dimensional carbon lattice, they were able to identify boron and nitrogen for the first time, as the researchers report in the journal Science Advances.