skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Increasing the length of single-wall carbon nanotubes in a magnetically enhanced arc discharge

Journal Article · · Applied Physics Letters
DOI:https://doi.org/10.1063/1.2839609· OSTI ID:21016304
 [1]; ;  [2];  [3];  [4];  [5]
  1. Department of Mechanical and Aerospace Engineering, George Washington University, Washington, District of Columbia 20052 (United States)
  2. Plasma Nanoscience, School of Physics, The University of Sydney, Sydney, New South Wales 2006 (Australia)
  3. Department of Material Science, University of Michigan, Ann Arbor, Michigan 48109 (United States)
  4. Department of Geophysical Science, University of Chicago, Chicago, Illinois 60637 (United States)
  5. Department of Aerospace Engineering, University of Michigan, Ann Arbor, Michigan 48109 (United States)

It is demonstrated that a magnetic field has a profound effect on the length of a single-wall carbon nanotube (SWCNT) synthesized in the arc discharge. The average length of SWCNT increases by a factor of 2 in discharge with magnetic field as compared with the discharge without magnetic field, and the yield of long nanotubes with lengths above 5 {mu}m also increases. A model of SWCNT 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.

OSTI ID:
21016304
Journal Information:
Applied Physics Letters, Vol. 92, Issue 4; Other Information: DOI: 10.1063/1.2839609; (c) 2008 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
Country of Publication:
United States
Language:
English