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Screen-printed, flexible, and eco-friendly thermoelectric touch sensors based on ethyl cellulose and graphite flakes inks

2023-06-01Artigo científico Acesso aberto
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dc.contributor.authorFigueira, J.
dc.contributor.authorBonito, R. M.
dc.contributor.authorCarvalho, J. T.
dc.contributor.authorVieira, E. M. F.
dc.contributor.authorGaspar, C.
dc.contributor.authorLoureiro, Joana
dc.contributor.authorCorreia, J. H.
dc.contributor.authorFortunato, E.
dc.contributor.authorMartins, R.
dc.contributor.authorPereira, L.
dc.contributor.institutionDCM - Departamento de Ciência dos Materiais
dc.contributor.institutionCENIMAT-i3N - Centro de Investigação de Materiais (Lab. Associado I3N)
dc.contributor.institutionUNINOVA-Instituto de Desenvolvimento de Novas Tecnologias
dc.contributor.pblIOP Publishing
dc.date.accessioned2023-07-06T22:18:39Z
dc.date.available2023-07-06T22:18:39Z
dc.date.issued2023-06-01
dc.descriptionFunding Information: This work was financed by national funds from FCT—Fundação para a Ciência e a Tecnologia, I P, in the scope of the projects LA/P/0037/2020 of the As-sociate Laboratory Institute of Nanostructures, Nanomodelling and Nanofabrication—i3N. The authors would like to thank Miguel Alexandre for some explanatory illustrations. Publisher Copyright: © 2023 The Author(s). Published by IOP Publishing Ltd.
dc.description.abstractDespite the undoubtable interest in energy conversion, thermoelectric (TE) materials can be approached from a temperature-sensitive perspective, as they can detect small thermal stimuli, such as a human touch or contact with cold/hot objects. This feature offers possibilities for different applications one of them being the integration with scalable and cost-effective, biocompatible, flexible, and lightweight thermal sensing solutions, exploring the combination of sustainable Seebeck coefficient-holding materials with printing techniques and flexible substrates. In this work, ethyl cellulose and graphite flakes inks were optimized to be used as functional material for flexible thermal touch sensors produced by screen-printing. Graphite concentrations of 10, 20 and 30 wt% were tested, with 1, 2 and 3 printed layers on four different substrates—office paper, sticker label paper, standard cotton, and organic cotton. The conjugation of these variables was assessed in terms of printability, sheet resistance and TE response. The best electrical-TE output combination is achieved by printing two layers of the ink with 20 wt% of graphite on an office paper substrate. Subsequently, thermal touch sensors with up to 48 TE elements were produced to increase the output voltage response (>4.5 mV) promoted by a gloved finger touch. Fast and repeatable touch recognition were obtained in optimized devices with a signal-to-noise ratio up to 340 and rise times bellow 0.5 s. The results evidence that the screen-printed graphite-based inks are highly suitable for flexible TE sensing applications.en
dc.description.versionpublishersversion
dc.description.versionpublished
dc.format.extent13
dc.format.extent22466088
dc.identifier.doi10.1088/2058-8585/acc114
dc.identifier.issn2058-8585
dc.identifier.otherPURE: 65375525
dc.identifier.otherPURE UUID: 2dd1091a-8a4f-4a56-a165-46b08cc80609
dc.identifier.otherScopus: 85153531495
dc.identifier.otherWOS: 000974310400001
dc.identifier.otherORCID: /0000-0002-4202-7047/work/151403291
dc.identifier.otherORCID: /0000-0002-6669-2500/work/151408788
dc.identifier.urihttp://hdl.handle.net/10362/154945
dc.identifier.urlhttps://www.scopus.com/pages/publications/85153531495
dc.language.isoeng
dc.peerreviewedyes
dc.relationinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDP%2F50025%2F2020/PT
dc.relationInstitute of Nanostructures, Nanomodelling and Nanofabrication
dc.relationInstitute of Nanostructures, Nanomodelling and Nanofabrication
dc.relationinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC%2FNAN-MAT%2F32558%2F2017/PT
dc.relationIdentification Smart Paper - IDS-Paper
dc.relationinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC%2FCTM-PAM%2F4241%2F2020/PT
dc.relationSustainable functionalized fiber-based structures for application in electronic and electrochemical systems
dc.relationNew era of printed paper electronics based on advanced functional cellulose
dc.relationSYmbiosis for eNERGY harversting concepts for smart platforms on foils
dc.relationEmerging Printed Electronics Research Infrastructure (EMERGE)
dc.relationinfo:eu-repo/grantAgreement/EC/H2020/952169/EU
dc.relationinfo:eu-repo/grantAgreement/EC/H2020/101008701/EU
dc.subjectethyl cellulose
dc.subjectflexible substrates
dc.subjectgraphite
dc.subjectscreen-printing
dc.subjectthermoelectric
dc.subjecttouch sensors
dc.subjectElectronic, Optical and Magnetic Materials
dc.subjectElectrical and Electronic Engineering
dc.titleScreen-printed, flexible, and eco-friendly thermoelectric touch sensors based on ethyl cellulose and graphite flakes inksen
dc.typejournal article
degois.publication.issue2
degois.publication.titleFlexible and Printed Electronics
degois.publication.volume8
dspace.entity.typePublication
oaire.awardNumberUIDP/50025/2020
oaire.awardNumberUIDB/50025/2020
oaire.awardNumberPTDC/NAN-MAT/32558/2017
oaire.awardNumberPTDC/CTM-PAM/4241/2020
oaire.awardNumberUIDB/04436/2020
oaire.awardNumberSFRH/BD/139225/2018
oaire.awardNumber640598
oaire.awardNumber952169
oaire.awardNumber101008701
oaire.awardTitleInstitute of Nanostructures, Nanomodelling and Nanofabrication
oaire.awardTitleInstitute of Nanostructures, Nanomodelling and Nanofabrication
oaire.awardTitleIdentification Smart Paper - IDS-Paper
oaire.awardTitleSustainable functionalized fiber-based structures for application in electronic and electrochemical systems
oaire.awardTitleNew era of printed paper electronics based on advanced functional cellulose
oaire.awardTitleSYmbiosis for eNERGY harversting concepts for smart platforms on foils
oaire.awardTitleEmerging Printed Electronics Research Infrastructure (EMERGE)
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDP%2F50025%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F50025%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC%2FNAN-MAT%2F32558%2F2017/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC%2FCTM-PAM%2F4241%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F04436%2F2020/PT info:eu-repo/grantAgreement/FCT/OE/SFRH%2FBD%2F121679%2F2016/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//SFRH%2FBD%2F139225%2F2018/PT
oaire.awardURIinfo:eu-repo/grantAgreement/EC/H2020/640598/EU
oaire.awardURIinfo:eu-repo/grantAgreement/EC/H2020/952169/EU
oaire.awardURIinfo:eu-repo/grantAgreement/EC/H2020/101008701/EU
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream3599-PPCDT
oaire.fundingStream3599-PPCDT
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStreamH2020
oaire.fundingStreamH2020
oaire.fundingStreamH2020
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