New Scientist: Researchers in Japan used a new electron microscope, whose beams of electrons have about 40% less energy than those in previous studies, to make measurements of the fragile bonds in carbon atoms on the edge of a sample of graphene. In the past, only high-energy beams were available, which could disturb the bonds on delicate lone atoms. The team could resolve the number of bonds holding the edge carbon atoms in place, which is important because it can affect the graphene sheet’s electrical and chemical properties. Their findings were published in Nature yesterday.