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Inkjet printed colorimetric ammonia sensor on plastic foil for low-cost and low-power devices

: Courbat, J.; Linder, M.; Dottori, M.; Briand, D.; Wöllenstein, J.; Rooij, N.F. de


Institute of Electrical and Electronics Engineers -IEEE-:
IEEE 23rd International Conference on Micro Electro Mechanical Systems, MEMS 2010 : Wanchai, Hong Kong, China, 24 - 28 January 2010
Piscataway/NJ: IEEE, 2010
ISBN: 978-1-4244-5761-8
ISBN: 978-1-4244-5764-9
International Conference on Micro Electro Mechanical Systems (MEMS) <23, 2010, Wanchai/Hong Kong>
Conference Paper
Fraunhofer IPM ()
gas sensor; ink jet printing; optical fabrication; optical waveguide

A polymeric-based colorimetric gas sensor with its associated electronics targeting ammonia detection at low-cost and low-power is presented. The gas sensitive layer was inkjet printed on a plastic foil used as an optical waveguide. The planar configuration of the sensor makes it compatible with large scale fabrication techniques, such as roll-to-roll processes. Its power consumption and noise level were measured. The sensor exhibited a good sensitivity to ammonia with a theoretical limit of detection of 104 ppb in a constant operation mode. The power consumption was reduced to the sub-mW range when operating in pulsed mode. It foresees applications in the field of wireless systems, for environmental and safety monitoring.