Tip-enhanced Raman spectroscopic imaging of localized defects in carbon nanotubes
- 4 October 2010
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 97 (14), 143117
- https://doi.org/10.1063/1.3499752
Abstract
We used tip-enhanced Raman spectroscopy to study defect induced D-band Raman scattering in metallic single-walled carbon nanotubes with a spatial resolution of 15 nm. The spatial extent of the D-band signal in the vicinity of localized defects is visualized and found to be about 2 nm only. Using the strong optical fields underneath the tip, we photogenerate localized defects and derive a relation between defect density and resulting D-band intensity.Keywords
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