Cross-Selectivity Enhancement of Poly(vinylidene fluoride-hexafluoropropylene)-Based Sensor Arrays for Detecting Acetone and Ethanol

dc.contributor.authorDaneshkhah, Ali
dc.contributor.authorShrestha, Sudhir
dc.contributor.authorSiegel, Amanda
dc.contributor.authorVarahramyan, Kody
dc.contributor.authorAgarwal, Mangilal
dc.contributor.departmentElectrical and Computer Engineering, School of Engineering and Technologyen_US
dc.date.accessioned2020-02-10T16:55:55Z
dc.date.available2020-02-10T16:55:55Z
dc.date.issued2017-03-15
dc.description.abstractTwo methods for cross-selectivity enhancement of porous poly(vinylidene fluoride-hexafluoropropylene) (PVDF-HFP)/carbon black (CB) composite-based resistive sensors are provided. The sensors are tested with acetone and ethanol in the presence of humid air. Cross-selectivity is enhanced using two different methods to modify the basic response of the PVDF-HFP/CB sensing platform. In method I, the adsorption properties of PVDF-HFP/CB are altered by adding a polyethylene oxide (PEO) layer or by treating with infrared (IR). In method II, the effects of the interaction of acetone and ethanol are enhanced by adding diethylene carbonate (DEC) or PEO dispersed in DEC (PEO/DEC) to the film. The results suggest the approaches used in method I alter the composite ability to adsorb acetone and ethanol, while in method II, they alter the transduction characteristics of the composite. Using these approaches, sensor relative response to acetone was increased by 89% compared with the PVDF-HFP/CB untreated film, whereas sensor relative response to ethanol could be decreased by 57% or increased by 197%. Not only do these results demonstrate facile methods for increasing sensitivity of PVDF-HFP/CB film, used in parallel they demonstrate a roadmap for enhancing system cross-selectivity that can be applied to separate units on an array. Fabrication methods, experimental procedures and results are presented and discussed.en_US
dc.identifier.citationDaneshkhah, A., Shrestha, S., Siegel, A., Varahramyan, K., & Agarwal, M. (2017). Cross-Selectivity Enhancement of Poly(vinylidene fluoride-hexafluoropropylene)-Based Sensor Arrays for Detecting Acetone and Ethanol. Sensors (Basel, Switzerland), 17(3), 595. doi:10.3390/s17030595en_US
dc.identifier.urihttps://hdl.handle.net/1805/22037
dc.language.isoen_USen_US
dc.publisherMDPIen_US
dc.relation.isversionof10.3390/s17030595en_US
dc.relation.journalSensorsen_US
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.sourcePMCen_US
dc.subjectAcetone sensoren_US
dc.subjectEthanol sensoren_US
dc.subjectVolatile organic compoundsen_US
dc.subjectPVDF-HFP/carbon black compositeen_US
dc.subjectLow water sensitivityen_US
dc.titleCross-Selectivity Enhancement of Poly(vinylidene fluoride-hexafluoropropylene)-Based Sensor Arrays for Detecting Acetone and Ethanolen_US
dc.typeArticleen_US
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