A Gradient Microarray Electronic Nose Based on Percolating SnO 2 Nanowire Sensing Elements
2007; American Chemical Society; Volume: 7; Issue: 10 Linguagem: Inglês
10.1021/nl071815+
ISSN1530-6992
AutoresVictor V. Sysoev, J. Goschnick, Thomas Schneider, E. Strelcov, Andrei Kolmakov,
Tópico(s)Analytical Chemistry and Sensors
ResumoFabrication, 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.
Referência(s)