Method of forming a heterojunction of a carbon nanotube and a different material, method of working a filament of a nanotube
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United States of America Patent
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Mar 20, 2001
Grant Date -
N/A
app pub date -
Jun 8, 1999
filing date -
Jun 8, 1998
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Expired
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Abstract
A carbon nanotube is contacted with a reactive substance which is a metal or a semiconductor. The reactive substance is heated to diffuse atoms of the reactive substance into the carbon nanotube so that the carbon nanotube is partially transformed or converted into carbide as a reaction product. Thus, a heterojunction of the reaction product and the carbon nanotube is formed. For example, the carbon nanotube (2) is contacted with a silicon substrate (1). The silicon substrate (1) is heated to cause solid-solid diffusion of Si. As a result, SiC (3) is formed as the heterojunction. At least a part of a filament material of a carbon nanotube is irradiated with electromagnetic wave to deform the filament material.
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