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Vol. 94, Issue 7, July 2008, pp.133-138




Gas Detection Using Embedded Piezoresistive Microcantilever Sensors in a Wireless Network


Timothy L. PORTER1, William DELINGER1, and Rick VENEDAM2

1Northern Arizona University, Dept. of Physics and Astronomy, Flagstaff, AZ 86011, E-mail: tim.porter@nau.edu

2National Security Technologies LLC, Nevada Test Site, NV 89193



Received: 3 June 2008   /Accepted: 21 July 2008   /Published: 31 July 2008


Abstract: Embedded piezoresistive microcantilever (EPM) sensors provide a simple, low-cost platform for the detection of numerous analytes. In general, EPM sensors are small, require only simple support electronics, are highly resistant to movement and vibration, and therefore are good candidates for deployment as small, battery powered units in a wireless sensor network. Here, we describe the circuitry involved in interfacing EPM sensors to commercial wireless “motes”, which form a hopping, self-healing mesh network. Preliminary data is presented from motes deployed in the detection of hydrogen cyanide (HCN) gas.


Keywords: Piezoresistive, Microcantilever, Wireless


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