title: Atomic correlation between adjacent graphene layers in double-wall carbon nanotubes.
abstract: Atomic correlation between adjacent graphene layers was elucidated for double-wall carbon nanotubes (DWNTs) through a chiral index assignment of two nested nanotubes by high-resolution transmission electron microscopy. Our analysis provides a rather constant diameter difference close to 0.75 nm but no chiral angle correlation between the constituent nanotubes in the concentric DWNTs. The local atomic correlation as a commensurate graphene stacking was repeatedly found in eccentric DWNTs and circumscribed nanotubes, which should lead to elastic deformation and bundling of nanotubes.
authors.affiliation: Research Center for Advanced Carbon Materials, National Institute of Advanced Industrial Science and Technology, Tsukuba, 305-8565, Japan. hashimoto-aya@aist.go.jp
authors.forename: Ayako
authors.initials: A
authors.lastname: Hashimoto
authors.forename: Kazu
authors.initials: K
authors.lastname: Suenaga
authors.forename: Koki
authors.initials: K
authors.lastname: Urita
authors.forename: Takashi
authors.initials: T
authors.lastname: Shimada
authors.forename: Toshiki
authors.initials: T
authors.lastname: Sugai
authors.forename: Shunji
authors.initials: S
authors.lastname: Bandow
authors.forename: Hisanori
authors.initials: H
authors.lastname: Shinohara
authors.forename: Sumio
authors.initials: S
authors.lastname: Iijima