High-resolution near-field Raman microscopy of single-walled carbon nanotubes.
We present near-field Raman spectroscopy and imaging of single isolated single-walled carbon nanotubes with a spatial resolution of approximately 25 nm. The near-field origin of the image contrast is confirmed by the measured dependence of the Raman scattering signal on tip-sample distance and the unique polarization properties. The method is used to study local variations in the Raman spectrum along a single single-walled carbon nanotube.
Hartschuh
Achim
A
The Institute of Optics, University of Rochester, Rochester, New York 14627, USA.
Sánchez
Erik J
EJ
Xie
X Sunney
XS
Novotny
Lukas
L