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Author Kang, W.P. ♦ Davidson, J.L. ♦ Wong, Y.M. ♦ Soh, K.L. ♦ Gurbuz, Y.
Source IEEE Xplore Digital Library
Content type Text
Publisher Institute of Electrical and Electronics Engineers, Inc. (IEEE)
File Format PDF
Copyright Year ©2004
Language English
Subject Domain (in DDC) Technology ♦ Engineering & allied operations ♦ Applied physics
Subject Keyword Nanostructures ♦ Chemicals ♦ Temperature sensors ♦ Gas detectors ♦ Temperature distribution ♦ Hydrogen ♦ Rectifiers ♦ Hydrocarbons ♦ Gases ♦ Delay
Abstract Carbon-derived micro- and nanostructures for chemical sensing in air and liquid environments have been developed. Gas sensing rectifiers comprised of micro-electrodes on diamond layers for detection of H/sub 2/, O/sub 2/, CO, and hydrocarbon gases have shown high sensitivity and fast response time over a very wide temperature range (>600/spl deg/C). Detection mechanisms of these microsensors have also been studied. A novel microelectronic gas sensor utilizing carbon nanotubes for hydrogen detection has also been developed. The sensor exhibits diode behavior at room temperature with drastic current changes in the presence of hydrogen. Also, diamond microelectrode arrays for electrochemical sensing in liquid media have been achieved and exhibited higher sensitivity than the conventional planar diamond film and other microprobes. Carbon-derived structures have broad practical applications for chemical sensing and have been demonstrated to operate at temperature, dynamic range, sensitivity, and radiation with far better performance than those based on silicon and other materials.
Description Author affiliation: Dept. of Electr. & Comput. Eng., Vanderbilt Univ., Nashville, TN, USA (Kang, W.P.; Davidson, J.L.; Wong, Y.M.; Soh, K.L.)
ISBN 0780386922
Educational Role Student ♦ Teacher
Age Range above 22 year
Educational Use Research ♦ Reading
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2004-10-24
Publisher Place Austria
Rights Holder Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Size (in Bytes) 2.08 MB
Page Count 19
Starting Page 376
Ending Page 394

Source: IEEE Xplore Digital Library