Ghedjatti, Ahmed and Magnin, Yann and Fossard, Frédéric and Wang, Guillaume and Amara, Hakim and Flahaut, Emmanuel and Lauret, Jean-Sébastien and Loiseau, Annick
Structural Properties of Double-Walled Carbon Nanotubes Driven by Mechanical Interlayer Coupling.
(2017)
ACS Nano, 11 (5). 4840-4847. ISSN 1936-0851
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(Document in English)
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Official URL: http://dx.doi.org/10.1021/acsnano.7b01328
Abstract
Structural identification of double-walled carbon nanotubes (DWNTs) is presented through a robust procedure based on the latest generation of transmission electron microscope, making possible a statistical analysis based on numerous nanoobjects. This approach reveals that inner and outer tubes of DWNTs are not randomly oriented, suggesting the existence of a mechanical coupling between the two concentric walls. With the support of atomic-scale modeling, we attribute it to the presence of incommensurate domains whose structures depend on the diameters and helicities of both tubes and where inner tubes try to achieve a local stacking orientation to reduce strain effects
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