Courbat, J.J.CourbatLinder, M.M.LinderDottori, M.M.DottoriBriand, D.D.BriandWöllenstein, J.J.WöllensteinRooij, N.F. deN.F. deRooij2022-03-112022-03-112010https://publica.fraunhofer.de/handle/publica/36653310.1109/MEMSYS.2010.5442348A 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.engas sensorink jet printingoptical fabricationoptical waveguide621conference paper