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The change of electrical resistance of a highly extensible composite sensors consisting of a network of entangled multi-wall carbon nanotubes (CNTs) and thermoplastic polyurethane elastomer in the course of elongation was stimulated by initial tensile deformation. Though the initial deformation irreversibly changes the arrangement of CNT network, subsequent cyclic elongation and corresponding resistance...
We have successfully demonstrated the direct pick and place of CNT bundles from a CNT growth substrate to a working specimen for strain sensing applications. The whole assembly process can take as little as one minute by manual operation under a probe station. A strain sensor based on CNT bundles has been constructed by adding electrical contacts. Experimental results show 2.1% relative resistance...
This paper demonstrates a new paradigm for realization of functional devices on CMOS die/wafer based on nanomaterials such as carbon nanotubes and graphene, for chemical and biological sensing. This is made possible through a post-CMOS directed assembly approach based on dielectrophoresis (DEP); a low-cost, maskless approach electric-field based technique that is compatible for high throughput assembly...
In this work, carbon nanotube (CNT) in anodized alumina templates electrode is developed as a new electrochemical electrode for chemical sensing application. Its electrochemical sensing performance is evaluated for salbutamol detection with different concentrations ranging from 10-6 to 10-4 mol.l-1. CV curves show irreversible oxidation peak at ~0.6 V. The amperometric response is linear with a sensitivity...
An integrated, tip-shaped micro array sensor with counter electrodes, an electrochemically deposited Ag/AgCl reference electrode and a dopamine sensing working electrode covered with an antifouling film of conducting polymer has been realized. Using for the first time an electrochemically deposited coating consisting of a composite of poly(1,4-ethylenedioxythiophene)/carbon nanotubes/surfactants on...
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