A Gradient Microarray Electronic Nose Based on Percolating SnO2 Nanowire Sensing Elements
Nano Letters2007Vol. 7(10), pp. 3182–3188
Citations Over TimeTop 1% of 2007 papers
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.
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