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SnO₂ Nanowire Based Aerosol Jet Printed Electronic Nose as Fire Detector

Adib, M. 1; Eckstein, R.; Hernandez-Sosa, G. ORCID iD icon; Sommer, M. 1; Lemmer, U. 1
1 Institut für Mikrostrukturtechnik (IMT), Karlsruher Institut für Technologie (KIT)


A smart fire detector preferably reacting before smoke breaks out and providing information about the substance going to start burning, is an unaccomplished hope for fire safety authority since decades. Here, we present an easy method to fabricate, hence cheap, smell detecting electronic nose (e-Nose) which is capable to operate as low cost smart detector for fire-related smells as an example application. Smell sensing in principle is achieved by measuring the resistance pattern of 16 sub-sensor elements combined on a single chip and a subsequent pattern recognition technique using multivariate data analysis. The sensing material of one single sub-sensor is SnO₂ nanowires, fabricated in a high temperature condensation process and dispersed on digital aerosol jet printed interdigitated Au structure. Assisted by UV illumination, the basic chip performance was characterized using laboratory gases, such as synthetic air, Isopropanol, CO and Benzene and the detection limit of the e-Nose exposed to Benzene was measured to be 2.2 ppm. It needs only 6.6 mW to activate such sensor for continuous operation. As an application of such system, a smart fire detector was demonstrated, which can not only detect the pre burning smell of several substances, but it can also identify previously taught patterns of burning smell of test substances like, cotton, beech, and PCB.

DOI: 10.1109/JSEN.2017.2777178
Zitationen: 29
Web of Science
Zitationen: 24
Zitationen: 31
Zugehörige Institution(en) am KIT Institut für Mikrostrukturtechnik (IMT)
Lichttechnisches Institut (LTI)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2017
Sprache Englisch
Identifikator ISSN: 1530-437X, 1558-1748
KITopen-ID: 1000077154
HGF-Programm 43.22.01 (POF III, LK 01) Functionality by Design
Erschienen in IEEE sensors journal
Verlag Institute of Electrical and Electronics Engineers (IEEE)
Band 18
Heft 2
Seiten 494-500
Schlagwörter Fires, Electrodes, Temperature sensors, Gold, Aerosols, Sensitivity
Nachgewiesen in Web of Science
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