Graphical method for assigning Raman peaks of radial breathing modes of single-wall carbon nanotubes

In order to assign Raman scattering peaks of radial breathing modes (RBMs) of single-wall carbon nanotubes (SWNTs), we have already developed a graphi cal method. Two charts were constructed based on the data of diameters, RBM frequencies and electronic density of states (DOS) of SWNTs. Using them we have successfully assigned resonant scattering peaks of RBM in the Raman S pectra recorded by Rao et al. The assignments indicate that SWNT samples ex hibit many different structures with no one species dominating. (C) 2001 Pu blished by Elsevier Science B.V.