ANYL 303 |
| Accurate and reliable detection of pollutants is a vital component in the overall goal of a cleaner atmosphere. Ruggedized and fieldable sensor systems allow for the monitoring of fixed sources of airborne pollutants for internal process control or for external enforcement. Seacoast Science, Inc. has developed a sensor system using fixed plate and interdigitated micromachined capacitors to measure the dielectric constant of distinctly separated selectively absorbing materials. The interaction between target analyte and functional material modifies the dielectric properties (capacitance) of the material. Materials were selected from commercial polymers, transition metal nanoparticles, network materials, functionalized polysiloxanes, or polycarbosilanes. Using an optimized array, real-time detection of atmospheric gases (NO2, SO2, CO2) and volatile organic compounds was achieved in a laboratory test system. The low power (6mW) and compact (6” x 2.5” x 1”) prototype system can wirelessly transmit sensor data to a PC platform for identification and quantification of target analytes. |
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Analytical Approaches: Sensors
8:30 AM-11:50 AM, Thursday, 14 September 2006 Moscone Center -- Room 123, Oral
Division of Analytical Chemistry |