title: Development of an autonomous detector for sensing of nerve agents based on functionalized silicon nanowire field-effect transistors.
abstract: The ability to detect minute traces of chemical warfare agents is mandatory both for military forces and homeland security. Various detectors based on different technologies are available but still suffer from serious drawbacks such as false positives. There is still a need for the development of innovative reliable sensors, in particular for organophosphorus nerve agents like Sarin. We report herein on the fabrication of a portable, battery-operated, microprocessor-based prototype sensor system relying on silicon nanowire field-effect transistors for the detection of nerve agents. A fast, supersensitive and highly selective detection of organophosphorus molecules is reported. The results show also high selectivity in complex mixtures and on contaminated materials.
authors.affiliation: CEA Grenoble/LITEN/DTNM/LCRE, 17 rue des Martyrs, 38054 Grenoble Cedex 9, France.
authors.forename: Simon
authors.initials: S
authors.lastname: Clavaguera
authors.forename: Nicolas
authors.initials: N
authors.lastname: Raoul
authors.forename: Alexandre
authors.initials: A
authors.lastname: Carella
authors.forename: Michael
authors.initials: M
authors.lastname: Delalande
authors.forename: Caroline
authors.initials: C
authors.lastname: Celle
authors.forename: Jean-Pierre
authors.initials: JP
authors.lastname: Simonato
mesh_terms: D004566:Electrodes; D057230:Limit of Detection; D008855:Microscopy, Electron, Scanning; D053770:Nanowires; D011108:Polymers; D011753:Pyrones / Q000032:analysis*; D012666:Semiconductors; D012825:Silicon
chemical_list: D011108:Polymers; D011753:Pyrones; C011890:kojic acid; D012825:Silicon