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1. Single-walled carbon nanotubes: analyzed as a function of oxygenation/oxidation (e.g. comparison of wet-air oxidized, ozonized, and pristine tubes). Degree of order and alignment probed in powder, film, and aligned samples with results compared to those of graphite. Refs.: Chem. Commun., (7), 772 (2004); Phys. Chem. Chem. Phys.,v.7, 1103 (2005) [invited]; and J. Phys. Chem. B, v.109, 8489 (2005) [invited].

2. Multi-walled carbon nanotubes: studied as a function of degree of purification and oxygenation. Ref.: ChemPhysChem, v.5, 1416 (2004).

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