Arc electrodes for synthesis of carbon nanostructures

A technology of carbon nanostructures and arc electrodes, applied in nanostructure manufacturing, nanotechnology for information processing, nanotechnology for materials and surface science, etc., can solve problems such as waste and low efficiency
CN1479937AInactive Publication Date: 2004-03-03SONY CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SONY CORP
Publication Date
2004-03-03
Estimated Expiration
Not applicable · inactive patent

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Abstract

An arc electrode structure, for producing carbon nanostructures, which includes a first electrode and two or more second electrodes disposed within a chamber. The electrodes are connected to a voltage potential to produce an arc-plasma region. The first electrode has a sloped surface with a plurality of holes therein for holding catalyst. The first electrode's sloped surface, and the positioning of the plurality of second electrodes allows control of the direction and region of arc-plasma. Further, the first electrode has a central bore which may be either a blind bore, or a through bore. The blind bore collects unwanted deposits that slide off of the sloped surface of the first electrode. The throughbore either allows soot and carbon nanostructures to be removed from the chamber, or allows organic vapor to be introduced into the chamber. When the throughbore is used to introduce organic vapor into the chamber, the vapor is directed through the arc-plasma region so that carbon nanostructures are built up by a CVD process rather than being broken off of carbon electrodes.
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Description

technical field

[0001] The invention relates to an arc electrode structure for synthesizing carbon nanostructures and a method for manufacturing carbon nanostructures using the same. More specifically, the present invention relates to an electrode arrangement for generating arc plasma discharges for the synthesis of carbon nanostructures by consuming carbon-containing electrodes or by chemical vapor deposition (CVD) processes. Carbon nanostructures that can be produced include single-walled nanotubes (SWNTs), multi-walled nanotubes (MWNTs), fullerenes, endohedralmetallofullerenes, carbon nanofibers, and other carbon nanomaterials. Background technique

[0002] In the related art, carbon nanostructures are fabricated using arc discharge between an anode and a cathode. For example, Japanese Patent No. 11-263609 published on September 28, 1999; D.T. Colbert et al., "Science of Fullerene Nanotubes" published on November 18, 1994, Science Magazine, Volume 266, can be found. Gr...

Claims

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