Publication
Title
A formation mechanism for catalytically grown helix-shaped graphite nanotubes
Author
Abstract
The concept of a spatial-velocity hodograph is introduced to describe quantitatively the extrusion of a carbon tubule from a catalytic particle. The conditions under which a continuous tubular surface can be generated are discussed in terms of this hodograph, the shape of which determines the geometry of the initial nanotube. The model is consistent with all observed tubular shapes and explains why the formation process induces stresses that may lead to ''spontaneous'' plastic deformation of the tubule. This result is due to the violation of the continuity condition, that is, to the mismatch between the extrusion velocity by the catalytic particle, required to generate a continuous tubular surface, and the rate of carbon deposition.
Language
English
Source (journal)
Science / American Association for the Advancement of Science [Washington, D.C.] - Washington, D.C.
Publication
Washington, D.C. : 1994
ISSN
0036-8075
1095-9203
Volume/pages
265:5172(1994), p. 635-639
ISI
A1994NZ53800025
Full text (Publisher's DOI)
Full text (publisher's version - intranet only)
UAntwerpen
Faculty/Department
Research group
Publication type
Subject
Affiliation
Publications with a UAntwerp address
External links
Web of Science
Record
Identification
Creation 19.07.2012
Last edited 08.08.2017
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