Surface Acoustic Wave Detection of Organophosphorus Compounds
Technical rept. May-Oct 1987
CHEMICAL RESEARCH DEVELOPMENT AND ENGINEERING CENTER ABERDEEN PROVING GROUND MD
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Surface Acoustic Wave SAW devices are potentially useful as small, sensitive chemical vapor sensors. The operating principles of these devices have been described in detail. Their use in detecting dimethyl methylphosphonate vapor has been reported previously. The basic operating principle for the SAW devices is the reversible adsorption of chemical vapors by adsorbent coatings that are sensitive and selective to the vapors that one is trying to detect. That is, SAW devices act as mass sensitive detectors. The SAW device used in this study consists of an array of four coated sensor elements with each coating giving a characteristic response to each of the vapors to be detected. Surface acoustic wave, Microsensors, Simulants, Detection.
- Organic Chemistry
- Chemical, Biological and Radiological Warfare