Researchers from the National Institute of Advanced Industrial Science and Technology (AIST) developed a new way to control the electrical conductivity of graphene.
The idea is to use helium ion beam (using a helium ion microscope) to artificially introduce a low concentration of crystal defects on a graphene sheet. This enabled the researchers to modulate the movement of electrons and holes in the graphene by applying a voltage to the gate electrode.
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Posted: Nov 18,2012 by Ron Mertens