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Detection of Organophosphate Gases and Biological Molecules using Embedded Piezoresistive Microcantilever Sensors

Published online by Cambridge University Press:  01 February 2011

Tim L Porter ,
Tim Vail  and
Richard J Venedam
Tim L Porter
Affiliation:
tim.porter@nau.edu, Northern Arizona University, Physics, Bldg. 19, Room 209, Flagstaff, AZ, 86011, United States, 928-523-2540, 928-523-1371
Tim Vail
Affiliation:
tim.vail@nau.edu, Northern Arizona University, Chemistry, Flagstaff, AZ, 86011, United States
Richard J Venedam
Affiliation:
venadarj@nv.doe.gov, National Security Technologies, LLC, Las Vegas, NV, 89193, United States
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Abstract

Embedded piezoresistive microcantilever (EPM) sensors have been used in the detection of a variety of analyte species. EPM sensors utilize a tiny piezoresistive microcantilever partially embedded into a sensing material to produce a sensing element that is compact, simple, resistant to movement and shock, and suitable for remote sensing applications. In the current project, we have used sensing materials comprised of an immobilizing polymer functionalized with either target enzymes or antibodies to detect two biological agents, Bacillus subtilis and Diisopropyl fluorophosphate (DFP). DFP is used as a simulant for organophosphate nerve agents, while BG is a large bacterial spore used as a simulant for other bacterial spores such as bacillus anthracis. Sensing results are presented for both types of EPM sensors.

Keywords

sensorpiezoresponsebiological
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1086: Symposium U – Mechanics of Nanoscale Materials , 2008 , 1086-U08-02
Copyright
Copyright © Materials Research Society 2008

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References

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