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Updated: May 30, 2026

Resonance Raman Spectroscopy of Extreme Nanowires and Other 1D Systems
Published on: April 28, 2016
Reflectance spectra of individual single-walled carbon nanotubes
Hualing Zeng1, Liying Jiao, Xiaojun Xian
1Department of Physics, University of Hong Kong, Hong Kong, People's Republic of China.
Abstract:
We report backscattering spectroscopic measurements on individual single-walled carbon nanotubes (SWNTs). The reflectance spectra show geometry-dependent resonant peaks corresponding to optical transitions between Van Hove singularities in the SWNTs' joint density of states. All nanotubes display certain colours as their reflectance spectra demonstrate strong energy dependence. This approach was proved to be an effective tool for probing the geometric structures and optical properties of individual SWNTs.
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