Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5424853 | Surface Science | 2007 | 4 Pages |
Abstract
Heating of multi-walled carbon nanotubes is often required to obtain clean patterns in the field electron emission microscope (FEEM). A transmission electron micrograph study of morphological changes in the cap structure of multi-walled carbon nanotubes due to heating in vacuum is presented. The lack of significant structural change in the cap structure when specimens were heated to 1925Â K for 2.5Â h determines an upper bound for the diffusivity of multi-walled carbon nanotube surface atoms, of the order of 10â16Â cm2/s at 1925Â K.
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Authors
G.L. Martin, P.R. Schwoebel,