Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1419531 | Carbon | 2005 | 5 Pages |
Abstract
By investigating the morphologies and microstructures of the cathode deposits prepared by self-sustained arc discharge between graphite rods, we consider that there are two electron emission mechanisms occurring on the cathode: field emission and thermionic emission. The former occurs mainly on the edge of the growing surface, by which we can explain the formation of the outer hard shell of the cathode deposit; while the latter occurs mainly on the growing surface except for the edge area and it is the main cause for the growth of carbon nanotubes.
Related Topics
Physical Sciences and Engineering
Energy
Energy (General)
Authors
Dongsheng Tang, Lianfeng Sun, Jianjun Zhou, Weiya Zhou, Sishen Xie,