title: Measuring the uniaxial strain of individual single-wall carbon nanotubes: resonance Raman spectra of atomic-force-microscope modified single-wall nanotubes.
abstract: Raman spectroscopy is used to measure the strain in individual single-wall carbon nanotubes, strained by manipulation with an atomic-force-microscope tip. Under strains varying from 0.06%-1.65%, the in-plane vibrational mode frequencies are lowered by as much as 1.5% (40 cm(-1)), while the radial breathing mode (RBM) remains unchanged. The RBM Stokes/anti-Stokes intensity ratio remains unchanged under strain. The elasticity of these strain deformations is demonstrated as the down-shifted Raman modes resume their prestrain frequencies after a nanotube is broken under excessive strain.
authors.affiliation: Department of Physics, Harvard University, Cambridge, Massachusetts 02138, USA.
authors.forename: S B
authors.initials: SB
authors.lastname: Cronin
authors.forename: A K
authors.initials: AK
authors.lastname: Swan
authors.forename: M S
authors.initials: MS
authors.lastname: Unlü
authors.forename: B B
authors.initials: BB
authors.lastname: Goldberg
authors.forename: M S
authors.initials: MS
authors.lastname: Dresselhaus
authors.forename: M
authors.initials: M
authors.lastname: Tinkham