title: A gradient microarray electronic nose based on percolating SnO(2) nanowire sensing elements.
abstract: Fabrication, characterization, and tests of the practical gradient microarray electronic nose with SnO(2) nanowire gas-sensing elements are reported. This novel device has demonstrated an excellent performance as a gas sensor and e-nose system capable of promptly detecting and reliably discriminating between several reducing gases in air at a ppb level of concentration. It has been found that, in addition to the temperature gradient across the nanowire layer, the density and morphological inhomogeneities of nanowire mats define the discriminating power of the electronic nose.
authors.affiliation: Department of Physics, Saratov State Technical University, Saratov 410054, Russia. vsysoev@sstu.ru
authors.forename: Victor V
authors.initials: VV
authors.lastname: Sysoev
authors.forename: Joachim
authors.initials: J
authors.lastname: Goschnick
authors.forename: Thomas
authors.initials: T
authors.lastname: Schneider
authors.forename: Evghenii
authors.initials: E
authors.lastname: Strelcov
authors.forename: Andrei
authors.initials: A
authors.lastname: Kolmakov
mesh_terms: D032701:Biomimetics / Q000295:instrumentation / Q000379:methods; D004563:Electrochemistry / Q000295:instrumentation* / Q000379:methods; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005740:Gases / Q000032:analysis*; D046228:Microarray Analysis / Q000295:instrumentation* / Q000379:methods; D008839:Microelectrodes; D036103:Nanotechnology / Q000295:instrumentation* / Q000379:methods; D009666:Nose; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D017971:Tin Compounds / Q000737:chemistry*; D014159:Transducers
chemical_list: D005740:Gases; D017971:Tin Compounds; C045358:stannic oxide