Title :
Microfabricated Electrochemical Sensor for Chemical Warfare Agents: Smaller is Better
Author :
Oh, Ilwhan ; Monty, Chelsea ; Shannon, Mark A. ; Maset, R.I.
Author_Institution :
Univ. of Illinois at Urbana-Champaign, Urbana
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 the microchannel sensor, it gives response of hundreds of mV to trace vapor (10 ppb) of chemical warfare agent simulants within ~10 sec. Double microchannel design further reduces potential drift and simplifies the sensor setup.
Keywords :
electrochemical sensors; gas sensors; membranes; nanoporous materials; chemical warfare agents; electrochemical sensor; electrochemical transducer; gas chemical sensor; liquid-gas microchannels; microchannel sensor; nanoporous membrane; Biomembranes; Biosensors; Chemical and biological sensors; Chemical sensors; Chemical transducers; Electrodes; Gas detectors; Mechanical sensors; Microchannel; Nanoporous materials; chemical warfare agent; electrochemical gas sensor; multiphase microreactor;
Conference_Titel :
Solid-State Sensors, Actuators and Microsystems Conference, 2007. TRANSDUCERS 2007. International
Conference_Location :
Lyon
Print_ISBN :
1-4244-0842-3
Electronic_ISBN :
1-4244-0842-3
DOI :
10.1109/SENSOR.2007.4300294
