Fabrication of an ammonia gas sensor using inkjet-printed polyaniline nanoparticles
By K. Crowley, Aoife Morrin, Aaron Hernandez, E. O'Malley, Philip G. Whitten, Gordon G. Wallace, M. Smyth, Anthony J. Killard. 2008
228 citations recorded by the source corpus.
Abstract This work details the fabrication and performance of a sensor for ammonia gas analysis which has been constructed via the inkjet-printed deposition of polyaniline nanoparticle films. The conducting films were assembled on interdigitated electrode arrays and characterised with respect to their layer thickness and thermal properties. The sensor was further combined with heater foils for operation at a range of temperatures. When operated in a conductimetric mode, the sensor was shown to exhibit temperature-dependent analytical performance to ammonia detection. At room temperature, the sensor responded rapidly to ammonia (t50 = 15 s). Sensor recovery time, response linearity and sensitivity were all significantly improved by operating the sensor at temperatures up to 80 °C. The sensor was found to have a stable logarithmic response to ammonia in the range of interest (1–100 ppm). The sensor was also insensitive to moisture in the range from 35 to 98% relative humidity. The response of the sensor to a range of common potential interferents was also studied.
Subfields: Bioengineering, Electrical and Electronic Engineering, Polymers and Plastics
View Paper: https://www.semanticscholar.org/paper/7c8472588e3e9ba4c2395ef7bc151ee13c1c849c
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In Bioengineering
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In Polymers and Plastics
Citations in the corpus
- Inkjet printing of conductive materials: a review (2012, background): “The recovery time, linearity and sensitivity of conductive polymer sensors were found to depend on the number of printed layers (Crowley et al., 2008) and film morphology (Torsi et al.”
- All-Inkjet-Printed Organic Thin-Film Transistor Inverter on Flexible Plastic Substrate (2011, methodology): “Moreover, the inkjet printing method enabled large-area and low-temperature fabrication process on flexible substrates for various electronic applications such as active-matrix display, radio-frequency identification, sensor, and microelectronic circuits [5]–[7].”
- Highly Sensitive and Selective Chemiresistor Gas/Vapor Sensors based on Polyaniline Nanocomposite: A comprehensive review (2016, methodology): “The tres and trec characteristics of Inkjet-printed PANI thin films for (100 ppm) of NH3 gas at RT (25 C) were found to be 90 s and 90 s, respectively [35].”