Thin Films of Metallic Carbon Nanotubes Prepared by Dielectrophoresis


  • R. K. acknowledges funding by the Initiative and Networking Fund of the Helmholtz-Gemeinschaft Deutscher Forschungszentren (HGF) and discussions with C. Marquardt, S. Blatt, and M. Oron-Carl.


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Dielectrophoretic separation of metallic carbon nanotubes from semiconducting carbon nanotubes is developing towards a bulk-separation method, which allows, for the first time, the production of thin films of only metallic single-walled carbon nanotubes on a transparent quartz-glass substrate (see figure). Larger quantities of nanotubes are processed without sacrificing the intrinsic high quality of the process–a development that is promising for the development of nanotube-based electronic-device applications.