Winstead Sechrest & Minick P.C.
Carbon fibers formed from single-wall carbon nanotubes
A method for purifying a mixture comprising single-wall carbon nanotubes and amorphous carbon contaminate is disclosed. The method includes the steps of heating the mixture under oxidizing conditions sufficient to remove the amorphous carbon, followed by recovering a product comprising at least about 80% by weight of single-wall carbon nanotubes. A method for producing tubular carbon molecules of about 5 to 500 nm in length is also disclosed. The method includes the steps of cutting single-wall nanotube containing-material to form a mixture of tubular carbon molecules having lengths in the range of 5-500 nm and isolating a fraction of the molecules having substantially equal lengths. The nanotubes may be used, singularly or in multiples, in power transmission cables, in solar cells, in batteries, as antennas, as molecular electronics, as probes and manipulators, and in composites.
William Marsh Rice University
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Daniel T. Ken Andreas Jie Andrew G. Jason H. Ting Hongjie Pavel Richard E.
Colbert Smith Thess Liu Rinzler Hafner Guo Dai Nikolaev Smalley