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

fYear

2007

fDate

10-14 June 2007

Firstpage

971

Lastpage

974

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/SENSOR.2007.4300294

Filename

4300294