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.
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Liu et al. (2005) studied this question.
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