A microsensor for trinitrotoluene vapour

L. A. Pinnaduwage, A. Gehl, D. L. Hedden, G. Muralidharan, T. Thundat, R. T. Lareau, T. Sulchek, L. Manning, B. Rogers, M. Jones and J. D. Adams ()
Additional contact information
L. A. Pinnaduwage: Oak Ridge National Laboratory, Oak Ridge
A. Gehl: Oak Ridge National Laboratory, Oak Ridge
D. L. Hedden: Oak Ridge National Laboratory, Oak Ridge
G. Muralidharan: Oak Ridge National Laboratory, Oak Ridge
T. Thundat: Oak Ridge National Laboratory, Oak Ridge
R. T. Lareau: Transportation Security Administration
T. Sulchek: University of Nevada
L. Manning: University of Nevada
B. Rogers: University of Nevada
M. Jones: University of Nevada
J. D. Adams: University of Nevada

Nature, 2003, vol. 425, issue 6957, 474-474

Abstract: Abstract Sensing devices designed to detect explosive vapours are bulky, expensive and in need of technological improvement — dogs remain the most effective detectors1 in the fight against terrorism and in the removal of land-mines2,3. Here we demonstrate the deflagration of trinitrotoluene (TNT) in a small localized explosion on an uncoated piezoresistive microcantilever. This explosive-vapour sensor, which has a detection capability that is comparable to that of a dog, should enable extremely sensitive, miniature detection devices to be used on a large scale.

Date: 2003
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DOI: 10.1038/425474a

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