Catalyst structure and method of manufacturing carbon nanotube using the same
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United States of America Patent
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Nov 26, 2013
Grant Date -
Jul 26, 2007
app pub date -
Dec 27, 2004
filing date -
Feb 27, 2004
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Abstract
A catalyst structure that allows a carbon nanotube having a desired shape and with larger length to be obtained in a stable manner and in high purity as well as a method of manufacturing a carbon nanotube using the same are provided. The present invention relates to a catalyst structure for use in manufacturing a carbon nanotube by means of vapor deposition of crystalline carbon, having a catalytic material that forms a ring or a whirl on its crystal growth surface, and further relates to a method of manufacturing a carbon nanotube using the same. Preferably, the catalyst structure is a columnar body with its upper surface serving as the crystal growth surface, where at least part of the side of the columnar body has a non-catalytic material that has substantially no catalytic activity with respect to the growth of the crystalline carbon.
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