Carbon fibrils and method for producing same
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United States of America Patent
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Nov 24, 1992
Issued Date -
N/A
app pub date -
Oct 1, 1990
filing date -
Dec 6, 1984
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention relates to carbon fibrils characterized by a substantially constant diameter, length greater than about 5 times the diameter, an ordered outer region of catalytically grown, multiple, substantially continuous layers of ordered carbon atoms having an outside diameter between about 3.5 and 70 nanometers, and a distinct inner core region. Each of the layers and the core are disposed substantially concentrically about the cylindrical axis of the fibril. The fibrils are substantially free of pyrolytically deposited thermal carbon with the diameter of the fibrils being equal to the outside diameter of the ordered outer region.
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