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Sensitive detection of plastic explosives with self-assembled monolayer-coated microcantilevers

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4 Author(s)
Pinnaduwage, L.A. ; Life Sciences Division, Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, Tennessee  37831-6123and Department of Physics, University of Tennessee, Knoxville, Tennessee 37932 ; Boiadjiev, V. ; Hawk, J.E. ; Thundat, T.

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We report the detection of 10–30 parts-per-trillion levels of pentaerythritol tetranitrate and hexahydro-1,3,5-triazine within 20 s of exposure to a silicon microcantilever with its gold surface modified with a self-assembled monolayer of 4-mercaptobenzoic acid. These measurements correspond to a limit of detection of a few fg. © 2003 American Institute of Physics.

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Applied Physics Letters  (Volume:83 ,  Issue: 7 )