Detection of trinitrotoluene via deflagration on a microcantilever
- 15 May 2004
- journal article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 95 (10) , 5871-5875
- https://doi.org/10.1063/1.1697619
Abstract
We describe in detail the detection of deflagration of trinitrotoluene (TNT) deposited on a piezoresistive microcantilever and point out its possible use for explosive-vapor detection. The deflagration of TNT causes the cantilever to bend (due to released heat) and its resonance frequency to shift (due to mass unloading). Explosive vapors provide unique responses that are absent for “interferences” such as water or alcohol vapors. The proposed sensor makes possible a sensitive, miniature explosives detection device that may be deployed in large numbers. The minimum amount of TNT detected on the cantilever depends on the cantilever dimensions and was ≈50 pg for the batch of cantilevers used.This publication has 25 references indexed in Scilit:
- A microsensor for trinitrotoluene vapourNature, 2003
- Making the World a Safer PlaceScience, 2003
- Remote sensing by nuclear quadrupole resonanceIEEE Transactions on Geoscience and Remote Sensing, 2001
- Design, fabrication and vapor characterization of a microfabricated flexural plate resonator sensor and application to integrated sensor arraysSensors and Actuators B: Chemical, 2001
- Detection of volatile vapors emitted from explosives with a handheld ion mobility spectrometerField Analytical Chemistry & Technology, 2001
- Commercial quartz crystal microbalances – theory and applicationsBiosensors and Bioelectronics, 1999
- EXPLOSIVES DETECTION: A Challenge for Physical ChemistryAnnual Review of Physical Chemistry, 1998
- Automated parallel high-speed atomic force microscopyApplied Physics Letters, 1998
- MICROCANTILEVER SENSORSMicroscale Thermophysical Engineering, 1997
- Explosives Detection for Aviation SecurityScience, 1992