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Ammonia gas sensor based on flexible polyaniline films for rapid detection of spoilage in protein-rich foods
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2017 (Engelska)Ingår i: Journal of materials science. Materials in electronics, ISSN 0957-4522, E-ISSN 1573-482X, Vol. 28, nr 11, s. 7760-7768Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

This work details the fabrication and performance of a sensor for ammonia gas, based on conducting polymer. The fabrication procedure consists following steps; polyaniline synthesis via oxidative polymerization technique, then a sensitive polyaniline film was deposited on a printed circuit board and finally, polyaniline microdevice were assembled on an interdigitated electrode arrays to fabricate the sensor for amomonia gas detection. Response time of this chemiresistive devices and humidity impact were examined for NH3 sensitivity and compared with commercial gas sensors (Taguchi Model 826). Data export from sensor to the computer was carried out via data logger model ADC-24 and analyzed using SPSS software. The sensor was found to have a rapid (t = 40 s) and stable linear response to ammonia gas in the concentration range of interest (50-150 ppm) under room temperature operation condition. It was reviled also reliable results to the variation of environment humidity. Power consumption, sensitivity, dimension, flexibility and fabrication cost were used as most important parameters to compare the new polymer based device with those of other similar works and the results showed that small size, low cost, flexibility, low power consumption and high sensitivity are from the benefits of this innovative device. In real-time application conditions flexible polyaniline based gas sensor with polyimide substrate in thickness 0.25 mm exhibits relatively good performance and accurate evaluation of food spoilage.

Ort, förlag, år, upplaga, sidor
Springer-Verlag New York, 2017. Vol. 28, nr 11, s. 7760-7768
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URN: urn:nbn:se:kth:diva-208796DOI: 10.1007/s10854-017-6471-zISI: 000401266700029Scopus ID: 2-s2.0-85011711838OAI: oai:DiVA.org:kth-208796DiVA, id: diva2:1109132
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QC 20170613

Tillgänglig från: 2017-06-13 Skapad: 2017-06-13 Senast uppdaterad: 2017-06-13Bibliografiskt granskad

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Zou, ZhuoZheng, Li-Rong
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Skolan för informations- och kommunikationsteknik (ICT)Integrerade komponenter och kretsar
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Journal of materials science. Materials in electronics
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