title: Novel polygonized single-wall carbon nanotube bundles.
abstract: We have synthesized novel crystalline ropes of "polygonized" single-wall carbon nanotubes (SWCNTs). The tubes exhibit rounded-hexagonal cross sections in contrast to the earlier observations of nearly circular tubes. To investigate the structural characteristics of the lattice of SWCNTs we have performed extensive molecular-dynamics simulations. We find several metastable structures of the lattice characterized by different tube cross sections, hexagonal, rounded-hexagonal, and circular, and increasing cell volume. The competition between different tube shapes as a function of tube diameter is analyzed and compared to experiments.
authors: Departamento de Física Teórica, Universidad de Valladolid, Spain. maria@rhodas.fam.cie.uva.es
authors: M J
authors: MJ
authors: López
authors: A
authors: A
authors: Rubio
authors: J A
authors: JA
authors: Alonso
authors: L C
authors: LC
authors: Qin
authors: S
authors: S
authors: Iijima