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The reflectance of unoriented single-wall carbon nanotube films has been measured over a wide wavelength range (far-IR-UV). The results are consistent with the film being a mixture of conducting (armchair), small bandgap (n=m, mod 3) and semiconducting nanotubes. The optical conductivity shows peaks corresponding to transitions between density-of-states peaks of these tubes, at energy locations consistent...
This Letter describes the production of single-wall carbon nanotube (SWNT) - polymer composites with enhanced mechanical and electrical properties and exceptional nanotube alignment. A combination of solvent casting and melt mixing was used to disperse SWNT materials in poly(methyl methacrylate) (PMMA). Composite films showed higher conductivity along the flow direction than perpendicular to it. Composite...
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