Embedded Piezoresistive Microcantilever Sensors Functionalized for the Detection of Methyl Salicylate
- Univ. of Nevada, Las Vegas, NV (United States)
- National Security Technologies, LLC. (NSTec), Mercury, NV (United States)
Sensors designed to detect the presence of methyl salicylate (MeS) have been tested. These sensors use a sensor platform based on the embedded piezoresistive microcantilever (EPM) design. Sensing materials tested in this study included the polymer poly (ethylene vinyl acetate), or PEVA as well as a composite sensing material consisting of the enzyme SA-binding protein 2, or SABP-2. The SABP-2 was immobilized within a biocompatible Hypol gel matrix. The PEVA-based sensors exhibited slower but reversible responses to MeS vapors, recovering fully to their initial state after the analyte was removed. SABP-2 sensors exhibited faster overall response to the introduction of MeS, responding nearly instantly. These sensors, however, do not recover after exposures have ended. Sensors using the SABP-2 sensing materials act instead as integrating sensors, measuring irreversibly the total MeS dose obtained.
- Research Organization:
- Nevada Test Site (NTS), Mercury, NV (United States)
- Sponsoring Organization:
- USDOE National Nuclear Security Administration (NNSA)
- DOE Contract Number:
- DE-AC52-06NA25946
- OSTI ID:
- 1136512
- Report Number(s):
- DOE/NV/25946-1531
- Journal Information:
- Sensors and Tranducers, Vol. 149, Issue 2; ISSN 1726-5479
- Publisher:
- International Frequency Sensor Association
- Country of Publication:
- United States
- Language:
- English
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