Ink-jet printed colorimetric gas sensors on plastic foil

An all polymeric colorimetric gas sensor with its associated electronics for ammonia (NH3) detection targeting low-cost and low-power applications is presented. The gas sensitive layer was inkjet printed on a plastic foil. The use of the foil directly as optical waveguide simplified the fabrication, made the device more cost effective and compatible with large scale fabrication techniques, such as roll to roll processes. Concentrations of 500 ppb of NH3 in nitrogen with 50% of RH were measured with a power consumption of about 868 mu W in an optical pulsed mode of operation. Such sensors foresee applications in the field of wireless systems, for environmental and safety monitoring.

Published in:
Proceedings of SPIE Photonic Devices + Applications Conference 2010, 1, 77790A
Presented at:
SPIE Photonic Devices + Applications Conference 2010, San Diego, USA, July 31-August 5, 2010
Spie-Int Soc Optical Engineering, Po Box 10, Bellingham, Wa 98227-0010 Usa

 Record created 2010-11-08, last modified 2018-03-17

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