Ways to Increase the Length of Single Wall Carbon Nanotubes in a Magnetically Enhanced Arc Discharge
M. Keidar, I. Levchenko, A. Shashurin, A.M. Waas and K. Ostrikov
The George Washington University, US
single wall carbon nanotube, arc discharge, magnetic field
It is demonstrated that the magnetic field has a profound effect on the length of a single wall carbon nanotube (SWNT) synthesized in the arc discharge. An average length of SWNT increases by a factor of 2 in discharge with magnetic field as compared with the discharge without magnetic field, and an amount of long nanotubes with the length above 5 micron also increases. A model of SWNT growth on metal catalyst in arc plasma was developed. Monte-Carlo simulations confirm that the increase of the plasma density in the magnetic field leads to an increase in the nanotube growth rate and thus leads to longer nanotubes.
Nanotech 2008 Conference Program Abstract