Four photon low-frequency Raman spectroscopy of single wall carbon nanotubes

✍ Scribed by A.F. Bunkin; S.M. Pershin

• Publisher: John Wiley and Sons
• Year: 2007
• Tongue: English
• Weight: 179 KB
• Volume: 4
• Category: Article
• ISSN: 1612-2011
• DOI: 10.1002/lapl.200710047

✦ Synopsis

Here we present the data of study of carbon nanotubes at ultra low (less than 0.1 μg/ml) concentration in aqueous surfactant suspension by four photon coherent Raman spectroscopy technique. The spectra have been recorded separately in the two spectral ranges from 100 to 250 cm^-1^ (3 – 7.5 THz) and ± 10 cm^-1^ (± 300 GHz). The two nanotube radial breathing modes (RBM) at 235 and 165 cm^-1^ have been observed. Besides we have detected the increasing of the rotational spectrum amplitude of H~2~O molecule arising on the water-nanotube interface. In fact, the amplitude increasing is observed mainly for ortho- spin-isomers of H~2~O.