Issue
EPL
Volume 79, Number 4, August 2007
Article Number 46002
Number of page(s) 5
Section Condensed Matter: Structural, Mechanical and Thermal Properties
DOI http://dx.doi.org/10.1209/0295-5075/79/46002
Published online 25 July 2007
EPL, 79 (2007) 46002
DOI: 10.1209/0295-5075/79/46002

X-ray microdiffraction study of single-walled carbon nanotube alignment across a fibre

V. Pichot1, M. Burghammer2, S. Badaire3, C. Zakri3, C. Riekel2, P. Poulin3 and P. Launois1

1  Laboratoire de Physique des Solides, UMR CNRS 8502, Bât 510, Université Paris Sud - 91405 Orsay, France
2  European Synchrotron Radiation Facility (ESRF) - 6 rue Jules Horowitz, 38043 Grenoble, France
3  Centre de Recherche Paul Pascal, CNRS, Université Bordeaux I - Avenue Schweitzer, 33600 Pessac, France


received 30 April 2007; accepted in final form 29 June 2007; published August 2007
published online 25 July 2007

Abstract
Nanotube alignment has been found to be one of the key parameters to explain the mechanical properties of carbon nanotube fibres. However, the question of the homogeneity of the alignment across the fibre diameter is still open. This letter reports on the first microdiffraction study of the alignment of nanotubes across a fibre, the diameter of which is about 20 $\mu $m. We show that the high flux of synchrotron radiation makes the analysis of nanotube alignment from the skin to the core of the fibre possible. The present result opens the way for further micrometer scale analyses of nanotube-based materials by X-ray scattering.

PACS
61.46.Fg - Nanotubes.
61.10.Eq - X-ray scattering (including small-angle scattering).
41.60.Ap - Synchrotron radiation.

© Europhysics Letters Association 2007