%0 Journal Article
%T Direct Evidence of Atomic Structure Conservation Along Ultra-Long Carbon Nanotubes
%+ Laboratoire Charles Coulomb (L2C)
%A Arenal, R.
%A Loethman, P.
%A Picher, M.
%A Than, T.
%A Paillet, Matthieu
%A Jourdain, Vincent
%< avec comité de lecture
%Z L2C:12-333
%@ 1932-7447
%J Journal of Physical Chemistry C
%I American Chemical Society
%V 116
%N 26
%P 14103-14107
%8 2012-07-05
%D 2012
%R 10.1021/jp212540n
%Z Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci]Journal articles
%X The atomic structure of ultra-long carbon nanotubes grown by catalytic chemical vapor deposition has been studied along the nanotube length via electron diffraction and high-resolution transmission electron microscopy. Contrary to other techniques, electron diffraction studies provide a direct determination of the chiral structure of nanotubes. These studies demonstrate that the chirality of the nanotubes remained constant all along their length. A tendency to double-walled nanotubes has been observed, as well as, a preferential distribution to armchair configuration. Furthermore, the studies yield a metallic:semiconducting ratio close to the one expected from a natural distribution of nanotubes (1:2).
%G English
%L hal-00808429
%U https://hal.science/hal-00808429
%~ CNRS
%~ L2C
%~ MIPS
%~ UNIV-MONTPELLIER
%~ UM-2015-2021