Nano Archive

Toward the nanoscopic ``electronic nose'': Hydrogen vs carbon monoxide discrimination with an array of individual metal oxide nano- and mesowire sensors

Sysoev, Victor V. and Button, Bradly K. and Wepsiec, Kelly and Dmitriev, Serghei and Kolmakov, Andrei (2006) Toward the nanoscopic ``electronic nose'': Hydrogen vs carbon monoxide discrimination with an array of individual metal oxide nano- and mesowire sensors. NANO LETTERS, 6 (8). pp. 1584-1588.

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Official URL: http://dx.doi.org/10.1021/nl060185t

Abstract

The array of chemiresistors made of individual pristine SnO2, surface doped (Ni)-SnO2 nanowires, and TiO2 and In2O3 mesoscopic whiskers was fabricated on a Si/SiO2 wafer. Their conductance was measured under pulses of H-2 and CO reducing gases in oxygen as background gas. The nanostructures were shown to be n-type semiconductors possessing high sensitivity to the target gases. Following the ``electronic nose'' concept, correlation analysis of response of three-chemiresistor array is shown to be sufficient to discriminate between H-2 and CO signals.

Item Type:Article
Subjects:Analytical Science > Nanotechnology for sensing and actuating
ID Code:3814
Deposited By:SPI
Deposited On:22 Jan 2009 10:19
Last Modified:22 Jan 2009 10:19

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