title: Atomic arrangement of iodine atoms inside single-walled carbon nanotubes
abstract: We report atomic resolution Z-contrast scanning transmission electron microscopy images that reveal the incorporation of I atoms in the form of helical chains inside single-walled carbon nanotubes. Density functional calculations and topological considerations provide a consistent interpretation of the experimental data. Charge transfer between the nanotube walls and the I chains is associated with the intercalation.
authors.affiliation: Department of Chemical and Materials Engineering, University of Kentucky, Lexington, Kentucky 40506 and Solid State Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 and Department of Physics and Astronomy, University of Kentuc.
authors.initials: X
authors.lastname: Fan
authors.initials: EC
authors.lastname: Dickey
authors.initials: PC
authors.lastname: Eklund
authors.initials: KA
authors.lastname: Williams
authors.initials: L
authors.lastname: Grigorian
authors.initials: R
authors.lastname: Buczko
authors.initials: ST
authors.lastname: Pantelides
authors.initials: SJ
authors.lastname: Pennycook