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Flexible 2D and 3D conductive hydrogel platforms for wearable applications

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dc.contributor.authorAguiar, Leonor
dc.contributor.authorPereira, Raquel
dc.contributor.authorSharma, Sanjiv
dc.contributor.authorMartins, Gabriela
dc.date.accessioned2024-05-03T09:49:49Z
dc.date.available2024-05-03T09:49:49Z
dc.date.issued2023
dc.description.abstractHydrogels have risen as exceptionally promising support materials in the development of novel wearable electronic devices. Their remarkable biocompatibility coupled with customizable mechanical features make these biomaterials ideal choices for applications involving direct contact with biological tissues. In this study, a simple and straightforward manufacturing process using bio-sourced polysaccharide chitosan (Chi) was employed for the fabrication of flexible and transparent biopolymeric membranes. Subsequently, this two-dimensional (2D) platform was made conductive, through a one-step process, by utilizing an optimized ratio of chitosan, lactic acid, and silver nanowires (Chi-LaA-AgNWs) dispersion. These electrodes were produced by screen printing technique. Furthermore, a solvent casting technique employing inverse polydimethylsiloxane (PDMS) molds was used to fabricate mechanically stable chitosan microneedles (Chi-MNs). These three dimensional (3D) structures were enriched with a carbon-based ink during the casting of concentrated Chi hydrogels into the mold while utilizing centrifugal forces. The electrochemical properties of the fabricated 2D and 3D conductive platforms were evaluated through cyclic voltammetry (CV). Along this study, the water swelling properties of Chi hydrogels were investigated by incorporating natural crosslinkers and plasticizing compounds like citric acid, glycerol, and sorbitol. Optimization of fabrication, physico-chemical and morphological analysis of the membranes and MNs were also performed. Ultimately, the use of Chi combined with environmentally friendly agents enabled the fabrication of flexible conductive platforms holding good stability, uniformity, and desirable electrical attributes.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationAguiar, L., Pereira, R., Sharma, S., & Martins, G. (2023, September 11-15). Flexible 2D and 3D conductive hydrogel platforms for wearable applications [Conference session]. NanoBio 2023 - 2nd International Conference on Nanotechnologies and Bionanoscience, Heraklion, Crete, Greecept_PT
dc.identifier.urihttp://hdl.handle.net/10400.22/25460
dc.language.isoengpt_PT
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/4.0/pt_PT
dc.subjectHydrogelspt_PT
dc.subjectElectronic devicespt_PT
dc.subjectBiomaterialspt_PT
dc.subjectConductive platformspt_PT
dc.subject2D materials and devicespt_PT
dc.titleFlexible 2D and 3D conductive hydrogel platforms for wearable applicationspt_PT
dc.typeconference object
dspace.entity.typePublication
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/Concurso de Projetos de Investigação de Caráter Exploratório (PeX) em Todos os Domínios Científicos/EXPL%2FCTM-REF%2F1095%2F2021/PT
oaire.citation.conferencePlaceHeraklion, Crete, Greecept_PT
oaire.citation.titleNanoBio 2023 - 2nd International Conference on Nanotechnologies and Bionanoscience, September 11-15pt_PT
oaire.fundingStreamConcurso de Projetos de Investigação de Caráter Exploratório (PeX) em Todos os Domínios Científicos
person.familyNameSharma
person.familyNameMartins
person.givenNameSanjiv
person.givenNameGabriela
person.identifier.ciencia-idC618-B958-12F5
person.identifier.ciencia-id0219-87C9-5E5B
person.identifier.orcid0000-0003-3828-737X
person.identifier.orcid0000-0001-6739-1526
person.identifier.scopus-author-id55918092100
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsclosedAccesspt_PT
rcaap.typeconferenceObjectpt_PT
relation.isAuthorOfPublicationeab35696-3b3b-4b3b-963b-4e9af14ad0e0
relation.isAuthorOfPublication3a45eaa7-19aa-4321-8ad3-9fc1bb0374d7
relation.isAuthorOfPublication.latestForDiscovery3a45eaa7-19aa-4321-8ad3-9fc1bb0374d7
relation.isProjectOfPublicationd1795a80-7b20-4de4-b424-6fa7fbb248db
relation.isProjectOfPublication.latestForDiscoveryd1795a80-7b20-4de4-b424-6fa7fbb248db

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