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- W3048252057 abstract "Humidity sensors have been developed based on a wide variety of materials such as ceramic, semiconductors and polymers. However, slow recovery rates is one of the major ongoing concerns of flexible poly(vinyl alcohol) (PVA) based humidity sensors. In this study, a simple, cost effective, fast responding, fast recovering and high sensitive, resistive poly(vinyl alcohol) (PVA) based humidity sensor was developed through the development of controlled conjugation system in PVA polymer matrix by hydroiodic acid (HI) treatment. Changes in structural and morphological parameters on sensor performance were investigated. Resistance of the sensor increased from 10.2 kΩ to 4.5 MΩ when relative humidity (RH) decreased from 92% to 7% RH, while capacitance varied slightly from 70 nF to 100 nF. The response and recovery times of the sensor were measured to be 224.6 s and 56.3 s respectively at room temperature when switching between 50% and 90% RH, demonstrating excellent performance towards fluctuating humidity levels. The results indicate the sensor is capable of measuring humidity levels above 30% with full scale recovery by only consuming 25% of the sensing time. Cost-effective, flexible, fast recovery and resistive sensing can be recognized as the most effective potential applications for this sensor." @default.
- W3048252057 created "2020-08-13" @default.
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- W3048252057 date "2020-10-01" @default.
- W3048252057 modified "2023-10-17" @default.
- W3048252057 title "Fabrication and Characterization of Partially Conjugated Poly (Vinyl Alcohol) Based Resistive Humidity Sensor" @default.
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- W3048252057 doi "https://doi.org/10.1016/j.sna.2020.112263" @default.
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