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A model for the growth of bamboo and skeletal nanotubes: catalytic capillarity

journal contribution
posted on 01.04.2002, 00:00 authored by L T Chadderton, Ying (Ian) ChenYing (Ian) Chen
Annealing of ball-milled powders of graphite and boron nitride leads to the formation of nanotubes. Homogeneous and heterogeneous nucleation processes are active. Tip nucleation by metal impurities, and surface diffusion gives rise by catalytic capillary growth to 'bamboo' and larger 'skeletal' nanotubes with a pronounced endohedral crystallographic architecture comprising inverted and faceted cuneiform voids. Dominant surface diffusion drives the growth of the nanotube. The internal structure is due to a fluid-like capillarity of the precipitate - thermodynamics and the capillarity of solids - which shapes and reshapes during nanotube extrusion.

History

Journal

Journal of crystal growth

Volume

240

Issue

1-2

Pagination

164 - 169

Publisher

Elsevier Science BV

Location

Amsterdam, The Netherlands

ISSN

0022-0248

Language

eng

Publication classification

C1.1 Refereed article in a scholarly journal

Copyright notice

2002, Elsevier Science B.V.