Synthesis and Electronic Properties of Individual Single-Walled Carbon Nanotube/Polypyrrole Composite Nanocables


  • We gratefully acknowledge support from a NSF CAREER Award, a NSF-CENS grant, a SRC/MARCO Award, a NSF-NIRT grant (CCR-01-20778), and the DARPA MolApps Program (SPAWAR SysCtr San Diego, #N66001-04-1-8902).


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Nanocable devices (see Figure) of individual single-walled carbon nanotube/polypyrrole (PPy) and their synthesis, transport studies, and chemical-sensing applications are investigated. They exhibit suppressed conductance, in contrast to the anticipated combined conductance from the nanotubes and PPy. Further deposition of PPy leads to a recovery in conductance. These devices are demonstrated to work as chemical sensors.