Production of nanotubes
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United States of America Patent
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Issued Date -
Jun 2, 2005
app pub date -
Feb 15, 2005
filing date -
Feb 1, 2002
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Abandoned
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Abstract
Apparatus for production of carbon nanotubes comprises a vacuum chamber, electrodes and a power supply to form an arc between the electrodes together with a conduit that extends into the vacuum chamber from the outside and enables graphite powder to be introduced directly into the arc formed between the electrodes. A feeder is provided to feed an anode into the chamber. In one embodiment, the electrodes include a plurality of anodes arranged in an array. The cathode is arranged to be rotatable with a trimmer to remove debris from the cathode surface. Methods of production of nanotubes using the apparatus are also provided.
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