Tunable Resonant Raman Scattering from Singly Resonant Single Wall   Carbon Nanotubes
  We perform tunable resonant Raman scattering on 17 semiconducting and 7 metallic singly resonant single wall carbon nanotubes. The measured scattering cross-section as a function laser energy provides information about a tube's electronic structure, the lifetime of intermediate states involved in the scattering process and also energies of zone center optical phonons. Recording the scattered Raman signal as a function of tube location in the microscope focal plane allows us to construct two-dimensional spatial maps of singly resonant tubes. We also describe a spectral nanoscale artifact we have coined the "nano-slit effect". 
Y. Yin, A. G. Walsh, A. N. Vamivakas, S. Cronin, A. M. Stolyarov, M.   Tinkham, W. Bacsa, M. S. Unlu, B. B. Goldberg, and A....