Innovative Gas Sensors for Sub-ppm Detection of Organophosphorus Nerve Agents by Chemically Functionalized Nanomaterial Based Electrical Devices

摘要

A chemical receptor specific to traces of organophosphorus agents (OPs) has been synthesized and grafted to carbon nanotube or silicon nanoribbon based electrical devices. Our results show that it is possible to detect efficiently traces of OPs with good selectivity notably with the use of silicon nanoribbons by monitoring the Drain-Source current of the SiNR-FET at an optimum back Gate voltage as a function of time.