Study of the symmetry of single-wall nanotubes by electron diffraction
Groupe de Dynamique des Phases Condensées, Université de Montpellier II, Place E. Bataillon CC 026,
34095 Montpellier Cedex 05 France
2 Laboratoire d'Étude des Microstructures (UMR 104 ONERA-CNRS) , Onera BP 72, 92322 Chatillon Cedex, France
Published online: 15 February 2000
Determining precisely the atomic structure of single-wall carbon nanotubes is essential since it tailors electronic properties of this new carbon material. Here, we present a quantitative electron diffraction study of electric-arc produced single-wall carbon nanotube bundles, combined with simulations based on the kinematic theory and with real-space images. We stress the importance of the twist of the bundle in the interpretation of our data and we analyze both packing lattice parameters and chirality distribution. We show that, within a given bundle, no chirality is favoured whereas SWNT diameters are almost uniform.
PACS: 61.14.-x – Electron diffraction and scattering / 61.48.+c – Fullerenes and fullerene-related materials / 61.46.+w – Clusters, nanoparticles, and nanocrystalline materials
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2000