Expanding the Vision of Sensor Materials (1995) / Chapter Skim
Currently Skimming:
APPENDIX F: ACOUSTIC WAVE DEVICES FOR CHEMICAL SENSING
APPENDIX F: ACOUSTIC WAVE DEVICES FOR CHEMICAL SENSING
Pages 124-126
The Chapter Skim interface presents what we've algorithmically identified as the most significant single chunk of text within every page in the chapter.
Select key terms on the right to highlight them within pages of the chapter.
From page 124... ...
By using coatings with selective absorption properties, investigators are developing sensors that can detect specific chemical species for both gas-phase and liquid-phase environments (Kepley et al., 1987~. Typically, durable oxide-based coatings that are chemically modified to provide the required sorption characteristics are used.
|
From page 125... ...
or other liquids during refining or processing, measurement of degradation of jet fuels in high-temperature environments, to monitoring the life of motor oil in automobile engines. CATALYTIC GATE SENSORS Catalytic gate sensors refer to sensors based on silicon integrated circuit technology.
|
From page 126... ...
Combining the two sensors on the same device and adding temperature sensing and control permits detection of hydrogen over a wide range of concentrations in gases under adverse environmental conditions. Since the sensors are fabricated using standard microelectron~cs techniques, further addition of integrated circuits on the sensor chip provide "smart" sensors; such sensors measure hydrogen concentrations and can also conduct signal processing, calibration, and output buffering, as well as initiate some action based on the measurement result.
|
Key Terms
This material may be derived from roughly machine-read images, and so is provided only to facilitate research.
More
information on Chapter Skim is available.