title: Carbon ad-dimer defects in carbon nanotubes.
abstract: The adsorption of carbon dimers on carbon nanotubes leads to a rich spectrum of structures and electronic structure modifications. Barriers for the formation of carbon dimer induced defects are calculated and found to be considerably lower than those for the Stone-Wales defect. The electronic states introduced by the ad-dimers depend on defect structure and tube type and size. Multiple carbon ad-dimers provide a route to structural engineering of patterned tubes that may be of interest for nanoelectronics.
authors.affiliation: Materials Science and Chemistry Divisions, Argonne National Laboratory, Argonne, Illinois 60439, USA.
authors.forename: M
authors.initials: M
authors.lastname: Sternberg
authors.forename: L A
authors.initials: LA
authors.lastname: Curtiss
authors.forename: D M
authors.initials: DM
authors.lastname: Gruen
authors.forename: G
authors.initials: G
authors.lastname: Kedziora
authors.forename: D A
authors.initials: DA
authors.lastname: Horner
authors.forename: P C
authors.initials: PC
authors.lastname: Redfern
authors.forename: P
authors.initials: P
authors.lastname: Zapol