Miniature sensor suitable for electronic nose applications | Zendy

Lal A. Pinnaduwage | Zendy; Anthony Gehl | Zendy; S. L. Allman | Zendy; Alicia Johansson | Zendy; Anja Boisen | Zendy

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Miniature sensor suitable for electronic nose applications

Author(s) -

Lal A. Pinnaduwage,

Anthony Gehl,

S. L. Allman,

Alicia Johansson,

Anja Boisen

Publication year - 2007

Publication title -

review of scientific instruments

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.605

H-Index - 165

eISSN - 1089-7623

pISSN - 0034-6748

DOI - 10.1063/1.2735841

Subject(s) - dimethyl methylphosphonate , electronic nose , explosive material , chemical sensor , materials science , piezoresistive effect , detector , computer science , sensitivity (control systems) , nanotechnology , optoelectronics , electronic engineering , electrode , telecommunications , chemistry , engineering , organic chemistry , inorganic chemistry

A major research effort has been devoted over the years for the development of chemical sensors for the detection of chemical and explosive vapors. However, the deployment of such chemical sensors will require the use of multiple sensors (probably tens of sensors) in a sensor package to achieve selective detection. In order to keep the overall detector unit small, miniature sensors with sufficient sensitivity of detection will be needed. We report sensitive detection of dimethyl methylphosphonate (DMMP), a stimulant for the nerve agents, using a miniature sensor unit based on piezoresistive microcantilevers. The sensor can detect parts-per-trillion concentrations of DMMP within 10 s exposure times. The small size of the sensor makes it ideally suited for electronic nose applications.

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