Direct measurement of strain-induced changes in the band structure of carbon nanotubes.
The effect of uniaxial strain on the optical transition energies of single-walled carbon nanotubes with known chiral indices was measured by Rayleigh scattering spectroscopy. Existing theory accurately predicts the trends in the measured strain-induced shifts, but overestimates their magnitude. Modification of the analysis to account for internal sublattice relaxation results in quantitative agreement with experiment.
Department of Mechanical Engineering, Columbia University, New York, New York, 10027 USA.
Mingyuan
M
Huang
Yang
Y
Wu
Bhupesh
B
Chandra
Hugen
H
Yan
Yuyao
Y
Shan
Tony F
TF
Heinz
James
J
Hone