title: Infrared-active vibrational modes of single-walled carbon nanotubes.
abstract: The IR-active vibrational modes of single-walled carbon nanotubes have been observed by optical transmission through thin films of bundled nanotubes. Because IR-active chemical functional groups, e.g., -COOH, -OH, might be attached to the tube walls and contribute additional spectral features, we have also studied the effects of chemical purification and long-term high-temperature vacuum annealing on the IR spectrum. Through comparison with theory, we are able to assign much of the sharp structure observed in our IR spectra.
authors.affiliation: Department of Physics, The Pennsylvania State University, University Park, Pennsylvania 16802, USA.
authors.forename: U J
authors.initials: UJ
authors.lastname: Kim
authors.forename: X M
authors.initials: XM
authors.lastname: Liu
authors.forename: C A
authors.initials: CA
authors.lastname: Furtado
authors.forename: G
authors.initials: G
authors.lastname: Chen
authors.forename: R
authors.initials: R
authors.lastname: Saito
authors.forename: J
authors.initials: J
authors.lastname: Jiang
authors.forename: M S
authors.initials: MS
authors.lastname: Dresselhaus
authors.forename: P C
authors.initials: PC
authors.lastname: Eklund