A team of physicists in the US, Japan and Belgium say they have discovered a new way to control and guide electrons in graphene by removing a single carbon atom from its perfect honeycombed lattice. The vacancy produced can host a local charge and this charge can be built up gradually by applying voltage pulses with the tip of a scanning tunnelling microscope (STM). This is the first observation ever of a stable and tuneable charged vacancy in graphene and could allow researchers to fabricate artificial atom arrays for performing the electronic equivalent of optical operations………
http://nanotechweb.org/cws/article/tech/64145
