Abstract: 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.

Keywords: 
• carbon cone /
• carbon nanotubes /
• chemical vapor deposition /
• field emission