Encapsulation, compensation, and substitution of catalyst particles during continuous growth of carbon nanotubes

Details Encapsulation, compensation, and substitution of catalyst particles during continuous growth of carbon nanotubes Encapsulation, compensation, and substitution of catalyst particles during continuous growth of carbon nanotubes

2007-07-18

arxiv.org/abs/0707.2759v1

Physics

Condensed Matter

Materials Science

13 pages, 4 figures, Advanced Materials, in press

Scientific paper

By sequential feeding of catalyst materials, it is revealed that the active growth sites are at the bottom of the carbon nanotubes (CNTs), and that catalyst particles are constantly encapsulated into nanotubes from the bottom. This gives a better insight into the mechanism of CNT formation and on ways to control the growth process. CNTs encapsulated with different materials should enable the study of their electronic or magnetic properties, with potential applications as building blocks for nanoelectronics and as fillers in composites for electromagenetic shielding.

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