This Letter outlines a model to account for the catalyzed growth of nanotubes by chemical vapor deposition. It proposes that their formation and growth is an extension of other known processes in which graphitic structures form over metal surfaces at moderate temperatures through the decomposition of organic precursors. Importantly, the model also states that the form of carbon produced depends on the physical dimensions of the catalyzed reactions. Experimental data are presented that correlate nanotube diameters to the size of the catalyst particles. Nanotube stability as a function of nanotube type, length and diameter are also investigated through theoretical calculations.
|Number of pages||6|
|Journal||Chemical Physics Letters|
|State||Published - Dec 17 1999|
Bibliographical noteFunding Information:
This work was supported by a National Science Foundation MRSEC (DMR-9809686). Z.M. and S.B.S. also acknowledge support from the NASA-Ames Research Center (NAG 20-1121).
ASJC Scopus subject areas
- Physics and Astronomy (all)
- Physical and Theoretical Chemistry