Sub-ppm detection of nerve agents using chemically functionalized silicon nanoribbon field-effect transistors

Abstract

(Figure Presented) A chemical receptor specific to traces of organophosphorus agents (OPs) has been synthesized and grafted to a silicon nanoribbon field-effect transistor (SiNRFET). X-ray structures illustrate the structural modifications of the receptor upon exposure to nerve agent simulants. A highly sensitive and selective detector of OPs can be obtained by monitoring the Drain-Source current of the SiNR-FET at an optimum back-gate voltage as a function of time. © 2010 Wiley-VCH Verlag GmbH & Co. KGaA.