Thermal motion of carbon clusters and production of carbon nanotubes by gravity-free arc discharge | Zendy

Tetsu Mieno | Zendy; Masaki Takeguchi | Zendy

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Thermal motion of carbon clusters and production of carbon nanotubes by gravity-free arc discharge

Author(s) -

Tetsu Mieno,

Masaki Takeguchi

Publication year - 2006

Publication title -

journal of applied physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.699

H-Index - 319

eISSN - 1089-7550

pISSN - 0021-8979

DOI - 10.1063/1.2194122

Subject(s) - carbon nanotube , carbon fibers , plasma , electric arc , diffusion , arc (geometry) , materials science , carbon arc welding , atomic physics , chemistry , thermodynamics , nanotechnology , composite material , physics , electrode , composite number , filler metal , geometry , mathematics , arc welding , quantum mechanics , welding

Thermal and diffusion properties of hot gas around a dc arc discharge under a gravity-free condition are investigated using a jet plane in order to improve the arc production of carbon clusters. Spherically symmetric temperature distribution of He gas around the arc plasma and monotonic slow expansion of the high-temperature region are observed. By means of the passive-type Mie scattering method, random slow diffusion of carbon clusters around the arc plasma is clearly observed under the gravity-free condition. This indicates that carbon clusters including single-walled carbon nanotubes are synthesized around the arc plasma where the He temperature is higher than 1000K. It is confirmed that large bundles of fatter single-walled carbon nanotubes are produced under the gravity-free condition.

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