title: Chirality assignment of single-walled carbon nanotubes with strain.
abstract: Strain-induced band gap shifts that depend strongly on the chiral angle have been observed by optical spectroscopy in single-walled carbon nanotubes (SWCNTs). Uniaxial and torsional strains are generated by changing the environment surrounding the SWCNTs, using the surrounding D2O ice temperature or the hydration state of a wrapping polymer. These methods are used as diagnostic tools to determine the quantum number q and examine chiral vector indices for specific nanotubes.
authors.affiliation: Clarendon Laboratory, Physics Department, Oxford University, Parks Road, Oxford OX1 3PU, UK.
authors.forename: Lain-Jong
authors.initials: LJ
authors.lastname: Li
authors.forename: R J
authors.initials: RJ
authors.lastname: Nicholas
authors.forename: R S
authors.initials: RS
authors.lastname: Deacon
authors.forename: P A
authors.initials: PA
authors.lastname: Shields