Increasing the length of single-wall carbon nanotubes in a magnetically enhanced arc discharge
- Department of Mechanical and Aerospace Engineering, George Washington University, Washington, District of Columbia 20052 (United States)
- Plasma Nanoscience, School of Physics, The University of Sydney, Sydney, New South Wales 2006 (Australia)
- Department of Material Science, University of Michigan, Ann Arbor, Michigan 48109 (United States)
- Department of Geophysical Science, University of Chicago, Chicago, Illinois 60637 (United States)
- 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, Journal Name: Applied Physics Letters Journal Issue: 4 Vol. 92; ISSN APPLAB; ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
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