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dc.contributor.authorMocci, Alice
dc.contributor.authorBarceló Mercader, Jordi
dc.contributor.authorCodony Gisbert, David
dc.contributor.authorArias Vicente, Irene
dc.contributor.otherUniversitat Politècnica de Catalunya. Doctorat en Matemàtica Aplicada
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental
dc.date.accessioned2021-11-02T12:54:31Z
dc.date.available2021-11-02T12:54:31Z
dc.date.issued2021-12
dc.identifier.citationMocci, A. [et al.]. Geometrically polarized architected dielectrics with apparent piezoelectricity. "Journal of the mechanics and physics of solids", Desembre 2021, vol. 157, p. 104643:1-104643:13.
dc.identifier.issn0022-5096
dc.identifier.urihttp://hdl.handle.net/2117/355163
dc.description.abstractThrough the suitable geometry of a repeating unit, a metamaterial can exhibit a property not present in the base material. Here, we propose a class of low area-fraction, bending-dominated metamaterials that exhibit apparent piezoelectricity, even though the base material is not piezoelectric. The proposed metamaterials exploit a universal electromechanical coupling operative at sub-micron scales, flexoelectricity, and upscale it to the macro-scale through geometrically-polarized material architecture. We quantify the apparent piezoresponse thanks to accurate simulations of continuum flexoelectricity. We characterize how apparent piezoelectricity depends on lattice geometry, orientation, feature size and area fraction. We find that if the base material is a good flexoelectric, then our low area-fraction designs exhibit piezoelectric couplings comparable to the best piezoelectric ceramics in bulk. More generally, our work provides the rules to endow any dielectric metamaterial with apparent piezoelectricity, hence enabling non-toxic, environmentally friendly and biocompatible materials for electromechanical transduction.
dc.description.sponsorship© 2021 Elsevier. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.language.isoeng
dc.rights©2021. Elsevier
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectÀrees temàtiques de la UPC::Matemàtiques i estadística::Anàlisi numèrica::Mètodes numèrics
dc.subject.lcshStrength of materials
dc.subject.otherMetamaterials
dc.subject.otherPiezoelectricity
dc.subject.otherFlexoelectricity
dc.subject.otherNon-centrosymmetry
dc.titleGeometrically polarized architected dielectrics with apparent piezoelectricity
dc.typeArticle
dc.subject.lemacResistència de materials
dc.contributor.groupUniversitat Politècnica de Catalunya. LACÀN - Mètodes Numèrics en Ciències Aplicades i Enginyeria
dc.identifier.doi10.1016/j.jmps.2021.104643
dc.description.peerreviewedPeer Reviewed
dc.subject.amsClassificació AMS::74 Mechanics of deformable solids::74S Numerical methods
dc.relation.publisherversionhttps://www.sciencedirect.com/science/article/pii/S0022509621002829
dc.rights.accessOpen Access
local.identifier.drac31835552
dc.description.versionPostprint (published version)
local.citation.authorMocci, A.; Barcelo, J.; Codony, D.; Arias, I.
local.citation.publicationNameJournal of the mechanics and physics of solids
local.citation.volume157
local.citation.startingPage104643:1
local.citation.endingPage104643:13


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