NDLI: Tin dioxide nano-wire device for sensing kinetics of acetone and ethanol towards diabetes monitoring

Content Provider	IEEE Xplore Digital Library
Author	Mwakikunga, B.W. Ray, S.S. Mokwena, M. Dewar, J. Geibelhaus, I. Singh, T. Fischer, T. Mathur, S.
Copyright Year	2013
Description	Author affiliation: Dept. of Chem., Univ. of Cologne, Cologne, Germany (Geibelhaus, I.; Singh, T.; Fischer, T.; Mathur, S.) \|\| Nat. Centre for Nano-Structured Mater., Council for Sci. & Ind. Res., Tshwane, South Africa (Mwakikunga, B.W.; Ray, S.S.) \|\| Dept. of Life & Consumer Sci., Univ. of South Africa (UNISA), Johannesburg, South Africa (Mokwena, M.; Dewar, J.)
Abstract	We demonstrate how to establish reliable contacts to $SnO_{2}$ nano-wires by growing these nano-wire on-chip on gold contacts deposited on alumina. The sensor device is used to sense the concentrations of acetone and ethanol in air and their reaction kinetics. Acetone molecules have higher adsorption and desorption rates on $SnO_{2}$ nanowires than ethanol molecules which leads to a lower critical acetone concentration at which the $SnO_{2}$ sensor saturates than is the case for ethanol. These differences suggest a new way of introducing selectivity to the notoriously non-selective $SnO_{2}$ and other oxide-based nano-scale sensors.
Starting Page	1
Ending Page	4
File Size	1515770
Page Count	4
File Format	PDF
ISBN	9781467346429
ISSN	19300395
DOI	10.1109/ICSENS.2013.6688338
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-11-03
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Ethanol Nanowires Sensors Gold Tin Equations Adsorption ethanol Introduction tin dioxide sensor human breath acetone
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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