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Inkjet Printing Of Resistive-Type Humidity Sensor For Harsh Environments, Hamed Kazerani
Inkjet Printing Of Resistive-Type Humidity Sensor For Harsh Environments, Hamed Kazerani
Dissertations
A flexible resistive-type humidity sensor for harsh environments is successfully designed and fabricated by an inkjet printing method using a Dimatix materials printer (DMP-2800 series from Fujifilm). Construction of the sensors is based on inkjet printed interdigitated silver electrodes on a polyimide flexible substrate along with an inkjet printable polyaniline (PANi) as humidity sensitive material. A copolymer of ethylene and vinyl alcohol (EVOH) is used as sensor protective coating. Double strand water- soluble PANi ink is synthesized by polymerization of aniline monomers with poly(4- styrenesulfonic acid) (PSSA) as a template.
Manufactured devices showed high sensitivity (/% @ 45%RH) to humidity …