Title :
Ionic gel based carbon dioxide gas sensor
Author :
Takei, Y. ; Honda, Masakazu ; Ishizu, Kentaro ; Noda, Kentaro ; Inaba, A. ; Itoh, Takayuki ; Maeda, Ryutaro ; Matsumoto, Kaname ; Shimoyama, Isao
Author_Institution :
Univ. of Tokyo, Tokyo, Japan
Abstract :
We propose a CO2 gas sensor based on an impedance change of ionic gel (IG) according to the CO2 gas concentration. The sensor consists of an IG film patterned on electrodes. The impedance of the IG changes when the IG absorbs CO2 gas. CO2 gas concentration can be detected by measuring the amount of impedance change. Our proposal sensor has a merit that power consumption is very low (<;1μW). It is because ionic liquid (IL) and IG have selective gas solubility and high impedance. The high impedance means that large current is not required for the measurement.
Keywords :
absorption; carbon compounds; chemical variables measurement; electric impedance measurement; electrochemical electrodes; gas sensors; gels; thin film sensors; CO2; IG film patterning; IL; carbon dioxide gas sensor; electrode; gas concentration detection; impedance measurement; ionic gel; ionic liquid; power consumption; selective gas solubility; Gas detectors; Impedance; Liquids; Power demand; Solvents; Temperature measurement; Temperature sensors;
Conference_Titel :
Design, Test, Integration and Packaging of MEMS/MOEMS (DTIP), 2013 Symposium on
Conference_Location :
Barcelona
Print_ISBN :
978-1-4673-4477-7
