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Using the chemical vapor deposition method, a structure of carbon cones was vertically grown on graphite substrate, where a carbon nanotube was synthesized as the core of the carbon cone and protruded out at the carbon cone's tip. This structure can serve as a field emission device or a probe of scanning probe microscope. With the help of the electron microscope, the optimum growth conditions were determined, and the growth mechanism was discussed.
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Keywords:
- carbon cone /
- carbon nanotubes /
- chemical vapor deposition /
- field emission
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