Title :
Electrochemical Multiphase Microreactor as Fast, Selective, and Portable Chemical Sensor of Trace Toxic Vapors
Author :
Oh, Ilwhan ; Monty, Chelsea N. ; Masel, Richard I.
Author_Institution :
Dept. of Chem. & Biomol. Eng., Univ. of Illinois at Urbana-Champaign, Urbana, IL
fDate :
5/1/2008 12:00:00 AM
Abstract :
A novel type of gas chemical sensor is fabricated by combining microfabrication techniques and electrochemical transducer. The microchannel sensor we built is composed of liquid/gas microchannels separated by a nanoporous membrane. When oxime chemistry is adapted into it, the microchannel sensor gives response of hundreds of mV to trace vapor (10 ppb) of acetylcholine simulant within s. Double microchannel design further reduces potential drift and simplifies the sensor setup.
Keywords :
electrochemical sensors; gas sensors; microreactors; microsensors; acetylcholine simulant; electrochemical multiphase microreactor; electrochemical transducer; gas chemical sensor; liquid-gas microchannels; microchannel sensor; microfabrication techniques; nanoporous membrane; oxime chemistry; portable chemical sensor; trace toxic vapors; Biomembranes; Biosensors; Chemical and biological sensors; Chemical sensors; Chemistry; Fabrication; Gas detectors; Hazardous materials; Microchannel; Nanoporous materials; Electrochemical gas sensor; multiphase microreactor; organophosphate;
Journal_Title :
Sensors Journal, IEEE
DOI :
10.1109/JSEN.2008.918682
