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We have developed a highly sensitive, transparent and flexible toluene sensor using cobalt-metalloporphyrin (Co-MPP)-functionalized graphene as sensing material. The functionalization of MPP enhanced responsiveness (ΔR/Ri) over 200% compared to pristine graphene toward 10 ppm of toluene molecules at room temperature, while it still revealed optical transmittance and mechanical flexibility.
A novel displacement sensor based on contact area change of two sets of vertically aligned carbon nanotubes (VACNTs) is developed. The VACNTs synthesized on movable side of two facing microstructures are in contact with another set of VACNTs on fixed side. When the movable microstructure is displaced, the VACNTs on movable side slide on those of fixed side. The measured output current signal is linear...
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