Table 1. Proposed (n,m) Assignments for the Metallic and Semi-Conducting RBM Frequencies Observed in the Spectra of HiPco BSA-SWNT Dispersions (Figure 1,Bottom).

metallic SWNT resonances (low-frequency RBM region)				semi-conducting SWNT resonances (high-frequency RBM region)
(n,m) assignment	observed ωRBM (cm–1)	reporteda ωRBM (cm–1)	diameter (nm)	(n,m) assignment	observed ωRBM (cm–1)	reportedb ωRBM (cm–1)	diameter (nm)
(12,6)	186	190	1.26	(10,3)	254	254	0.92
(9,9)	192	193	1.24	(11,1)	258	258	0.90
(13,4)	197	195	1.22	(7,6)	266	266	0.88
(12,3)	219	217	1.09	(7,5)	285	284	0.82
				(8,3)	299	301	0.77

^aAssignments for the metallic RBM frequencies of HiPco SDS-SWNT dispersions reported by Strano et al.²⁶

^bAssignments for the semiconducting RBM frequencies of HiPco SDBS-SWNT dispersions reported by Hennrich et al.³⁶