Graphene

Nano Scale (nm) C Foil

Graphene is a flat one-atom thick sheet of sp2 carbon atoms densely packed in a honeycomb crystal lattice structure. It is the basic structural element for graphite, carbon nanotubes, and fullerenes. Graphene samples are available as nanoflakes on Si/SiO2 substrate wafers. Each layer is monoatomically thin with a thickness of ~0.34nm, though it is possible to produce multi-layered flakes. Using microscopic imagery, one can easily find the flakes and process them using microelectronic fabrications techniques.

Graphene is the first example of truly two-dimensional crystals, giving it novel electronic and mechanical properties. Because of its high electronic mobility, structural flexibility, and capability of being tuned from p-type to n-type doping by the application of a gate voltage, graphene is considered a potential breakthrough in terms of carbon-based nano-electronics. Research into applications for carbon graphene nanosheets has focused on uses as platforms for next-wave microchips, active materials in field emitter arrays for flat panel screen displays, in biological sensors and medical imaging devices, in solar energy cells, and in high-surface area electrodes for use in bio-science. Graphene is a possible replacement material where carbon nanotubes are presently used. Additional technical, research and safety (MSDS) information is available.

Carbon is a Block P, Group 12, Period 2 element. The electronic configuration is [He] 2s2 2p2. In its elemental form carbon's CAS number is 7440-44-0. The carbon atom has a radius of 70.pm and it's Van der Waals radius is 170.pm. Carbon in its elemental form is one of the softest (graphite) and hardest (diamond) materials found in nature. Applications for graphitic carbon include in lubricant formulations and as the replacement for lead in pencils.