Method of producing a branched carbon nanotube for use with an atomic force microscope
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United States of America Patent
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Mar 29, 2005
Grant Date -
Jan 15, 2004
app pub date -
Apr 14, 2003
filing date -
Apr 12, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method of producing a branched carbon nanotube (CNT) is disclosed. The branched CNT is used with an atomic force microscope having a cantilever and a tip and that is able to measure a surface of a substrate as well as an undercut feature of the substrate that protrudes from the surface. A catalytic material is deposited onto the tip of the microscope, and the catalytic material is subjected to chemical vapor deposition. This initiates growth of a primary branch of the branched carbon nanotube such that the primary branch extends from the tip. A secondary branch is then introduced to extend from the primary branch and produce the branched carbon nanotube. The primary branch interacts with the surface of the substrate and the secondary branch interacts with the undercut feature.
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