Method for preparing single layer carbon nano-tube
AssigneeFutaba Denshi Kogyo K.K.
InventorsToshiyuki Tsuboi, Haruhiro Kobayashi, Kenji Nawamaki
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Abstract
There is provided a method for preparing a single layer carbon nano-tube stably and in high preparation efficiency. Helium is introduced from a gas inlet 19 while exhausting inside a vacuum chamber 11 by means of a rotary pump 12 to prepare an atmosphere of rare gas. DC arc discharge is established between a metal-added carbon electrode to which a single metal is added 13 and a metal-added carbon electrode to which a single metal the kind of which is different from that of the former metal is added 14 by the use of a discharge power source apparatus 17. Carbon and metals are evaporated from both electrodes, and the metals are alloyed to act as a catalyst to the carbon and the single layer carbon nano-tube is prepared.
Claims6
A method for preparing a single layer carbon nano-tube comprising generating arc discharge between two carbon electrodes to evaporate said carbon electrodes and generating soot containing the single layer carbon nano-tube in an atmosphere of a gas, characterized in that a metal-added carbon electrode to which more than two kinds of metals in all are added is used for one or both electrodes as said two carbon electrodes and an alternating voltage is applied between said two electrodes to generate AC arc discharge.
Dependencies are inferred from the claim text.