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Nanotube technology. Computer illustration of three concentric carbon nanotubes. A carbon nanotube is a one atom thick sheet of graphite, called graphene, rolled into a cylinder with diameter of the order of a nanometer. Graphene is a structural form (allotrope) of carbon. Such cylindrical carbon molecule structures have interesting properties that make them potentially useful in a wide variety of applications in nanotechnology, electronics, optics and even medicine. They exhibit extraordinary strength, unique electrical and heat conductive properties. A possible application of the concentric nanotube structure is to have the nanotubes telescope in and out and oscillate at a high frequency, forming a nanoscale radio transmitter.
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