METHOD FOR MANUFACTURING NANO-TUBE, NANO-TUBE MANUFACTURED THEREBY, APPARATUS FOR MANUFACTURING NANO-TUBE, METHOD FOR PATTERNING NANO-TUBE, NANO-TUBE MATERIAL PATTERNED THEREBY, AND ELECTRON EMISSION SOURCE
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United States of America Patent
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Jul 6, 2004
Grant Date -
May 23, 2002
app pub date -
Nov 21, 2001
filing date -
Nov 21, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method of instantaneously forming a surface of an arc-treated material mainly including graphite into nano-tubes due to arc discharge carried out using a unit like a welding arc torch or the like without necessarily requiring a processing container, resulting in the nano-tube being applied to an electron emission source. A torch electrode acting as a first electrode and the arc-treated material made of graphite and acting as a second electrode are arranged opposite to each other. A potential is applied between both electrodes to generate arc discharge therebetween. A mask having an opening pattern is arranged on the arc-treated material, so that only graphite positioned on portions of a surface of the arc-treated material corresponding to openings of the mask are exposed to arc, to thereby be formed into nano-tubes.
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