SWNT   90+%, OD/ID: 1-2 nm

Raman spectra

      Frequency range of A1g radial breathing mode (RBM):  156 – 309 cm-1

      Arithmetic average of RBM frequencies: 213 cm-1

      Diameter range of single-walled nanotubes: 0.76-1.57 nm

      Average diameter of single-walled nanotubes: 1.13 nm

      [S. Rols et al., Eur. Phys. J. B 18, 201-205 (2000)]