Rapid Bulk Synthesis of Carbon Nanotubes and Graphite Encapsulated Metal Nanoparticles

Tech ID: 10133 / UC Case 1999-245-0


Nanomaterials have a very diverse range of applications. Graphite encapsulated magnetic metal nanoparticles are of interest as magnetic data-storage media. Nanotubes have applications including: improved carbon-carbon composites for strong lightweight components (e.g. airplane skins and golf clubs), nanometer-scale electronic devices, electron guns for flat-screen televisions, and Scanning Tunneling Microscopy (STM) tips. Several synthesis methods are available for multi-walled nanotubes and they can be produced in bulk. However, there are no comparable methods for the bulk synthesis of single-walled nanotubes, which can therefore cost as much as $2000 per gram.


Scientists at the University of California have developed a rapid method for the bulk synthesis of carbon nanotubes and graphite encapsulated metal nanoparticles.


The new University of California process is a true bulk method for synthesizing nanotubes and graphite encapsulated metal nanoparticles. It offers:

  • A highly efficient, inexpensive, and readily scalable route to multi- and single-walled nanotubes and graphite encapsulated metal nanoparticles;
  • Reactions that use cheap precursors, require less preparation, and less-expensive equipment than existing methods;
  • Nanotube yields that can be optimized by adjusting reaction parameters.

Patent Status

Country Type Number Dated Case
United States Of America Issued Patent 6,479,028 11/12/2002 1999-245

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  • Kaner, Richard B.
  • Kiang, Ching Hwa
  • O'Loughlin, Jennifer L.
  • Wallace, Charles H.

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