Raman spectroscopy of nanoscale carbons and of an isolated carbon nanotube

The use of Raman spectroscopy as a characterization tool for carbon materials is briefly reviewed with particular emphasis given to nano-carbons and carbon nanotubes. The observation of Raman spectra from one carbon nanotube is discussed, including the new physical phenomena that occur at the single nanotube level, with special emphasis given to the use of resonance Raman scattering for the structural determination of (n, m) for individual nanotubes. Examples are given to show how single nanotube spectroscopy provides insight into the use of Raman spectroscopy for characterizing nanotube bundles and for carrying out other properties measurements on individual carbon nanotubes.