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Chemical modification has been performed on purified single walled carbon nanotubes. XPS spectrum shows that the peak corresponding to C (1s) centered at 284.38 eV in pure nanotubes (graphitic C) is 0.4 eV downshifted in chlorinated sample. Subsequent coupling reactions were carried out with diamine molecules to form intertube connections. Tripropylentetramine and phenylendiamine have been chosen...
In this paper, actuation properties of carbon nanotubes are discussed. Samples of freestanding nanotubes on nanostructured metallic blocks have been prepared. Using a conducting AFM tip, electrons can be injected into the nanotubes. As a consequence, the nanotube expands in a similar way as buckypaper does in an electrolyte. From experimental data, the relative length change is estimated to be less...
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