Lead-free piezocomposites with CNT-modified matrices: Accounting for agglomerations and molecular defects

Piezoelectric matrix-inclusion composites based on lead-free ceramics have attracted attention due to the possibility of manufacturing environmentally friendly devices using scalable emerging technologies such as 3D printing. However, lead-free materials lag lead-based piezo-composites in terms of p...

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Autores: Krishnaswamy, Jagdish, Buroni Cuneo, Federico Carlos, García Sánchez, Felipe, Melnik, Roderick, Rodríguez de Tembleque Solano, Luis, Sáez Pérez, Andrés
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2019
País:España
Institución:Universidad de Sevilla (US)
Repositorio:idUS. Depósito de Investigación de la Universidad de Sevilla
OAI Identifier:oai:idus.us.es:11441/155010
Acceso en línea:https://hdl.handle.net/11441/155010
https://doi.org/10.1016/j.compstruct.2019.111033
Access Level:acceso abierto
Palabra clave:Lead-free piezoelectric
Composite
Polycrystal
3D printing
Carbon nanotube
Agglomeration
Atomic defect
Multiscale design and homogenization
Coupled problems
Finite element analysis
Smart materials
Network of contacts
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spelling Lead-free piezocomposites with CNT-modified matrices: Accounting for agglomerations and molecular defectsKrishnaswamy, JagdishBuroni Cuneo, Federico CarlosGarcía Sánchez, FelipeMelnik, RoderickRodríguez de Tembleque Solano, LuisSáez Pérez, AndrésLead-free piezoelectricCompositePolycrystal3D printingCarbon nanotubeAgglomerationAtomic defectMultiscale design and homogenizationCoupled problemsFinite element analysisSmart materialsNetwork of contactsPiezoelectric matrix-inclusion composites based on lead-free ceramics have attracted attention due to the possibility of manufacturing environmentally friendly devices using scalable emerging technologies such as 3D printing. However, lead-free materials lag lead-based piezo-composites in terms of performance, thus necessitating new design strategies to escalate piezoelectric response. Here, we build a modeling paradigm for improving the piezoelectric performance through improved matrices and optimal polycrystallinity in the piezoelectric inclusions. By incorporating carbon nanotubes in the matrix, we demonstrate 2–3 orders of improvement in the piezoelectric response, through simultaneous hardening of the matrix and improvement in its permittivity. By tuning the polycrystallinity of the piezoelectric inclusions, we show considerable improvements exceeding 50% in the piezo-response, compared to single crystal inclusions. We further analyze the influence of carbon nanotube agglomerations at supramolecular length scales, as well as vacancy defects in the nanotubes at the atomic level, on composite performance. Although nanomaterial agglomeration is conventionally considered undesirable, we show that, near nanotube percolation, clustering of nanotubes can lead to better matrix hardening and higher permittivities, leading to improvements exceeding 30% in the piezoelectric response compared to non-agglomerated architectures. We further demonstrate that although atomic vacancy defects in nanotubes effectively soften the matrix, this can be compensated by agglomeration of nanotubes at larger length-scales.ElsevierIngeniería Mecánica y FabricaciónMecánica de Medios Continuos y Teoría de EstructurasTEP245: Ingeniería de las EstructurasMinisterio de Economía y Competitividad (MINECO). España2019info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionapplication/pdfapplication/pdfhttps://hdl.handle.net/11441/155010https://doi.org/10.1016/j.compstruct.2019.111033reponame:idUS. Depósito de Investigación de la Universidad de Sevillainstname:Universidad de Sevilla (US)InglésComposite Structures, 224, 111033.DPI2014-53947-RDPI2017-89162-Rhttps://www.sciencedirect.com/science/article/pii/S0263822319313200info:eu-repo/semantics/openAccessoai:idus.us.es:11441/1550102026-06-17T12:51:07Z
dc.title.none.fl_str_mv Lead-free piezocomposites with CNT-modified matrices: Accounting for agglomerations and molecular defects
title Lead-free piezocomposites with CNT-modified matrices: Accounting for agglomerations and molecular defects
spellingShingle Lead-free piezocomposites with CNT-modified matrices: Accounting for agglomerations and molecular defects
Krishnaswamy, Jagdish
Lead-free piezoelectric
Composite
Polycrystal
3D printing
Carbon nanotube
Agglomeration
Atomic defect
Multiscale design and homogenization
Coupled problems
Finite element analysis
Smart materials
Network of contacts
title_short Lead-free piezocomposites with CNT-modified matrices: Accounting for agglomerations and molecular defects
title_full Lead-free piezocomposites with CNT-modified matrices: Accounting for agglomerations and molecular defects
title_fullStr Lead-free piezocomposites with CNT-modified matrices: Accounting for agglomerations and molecular defects
title_full_unstemmed Lead-free piezocomposites with CNT-modified matrices: Accounting for agglomerations and molecular defects
title_sort Lead-free piezocomposites with CNT-modified matrices: Accounting for agglomerations and molecular defects
dc.creator.none.fl_str_mv Krishnaswamy, Jagdish
Buroni Cuneo, Federico Carlos
García Sánchez, Felipe
Melnik, Roderick
Rodríguez de Tembleque Solano, Luis
Sáez Pérez, Andrés
author Krishnaswamy, Jagdish
author_facet Krishnaswamy, Jagdish
Buroni Cuneo, Federico Carlos
García Sánchez, Felipe
Melnik, Roderick
Rodríguez de Tembleque Solano, Luis
Sáez Pérez, Andrés
author_role author
author2 Buroni Cuneo, Federico Carlos
García Sánchez, Felipe
Melnik, Roderick
Rodríguez de Tembleque Solano, Luis
Sáez Pérez, Andrés
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Ingeniería Mecánica y Fabricación
Mecánica de Medios Continuos y Teoría de Estructuras
TEP245: Ingeniería de las Estructuras
Ministerio de Economía y Competitividad (MINECO). España
dc.subject.none.fl_str_mv Lead-free piezoelectric
Composite
Polycrystal
3D printing
Carbon nanotube
Agglomeration
Atomic defect
Multiscale design and homogenization
Coupled problems
Finite element analysis
Smart materials
Network of contacts
topic Lead-free piezoelectric
Composite
Polycrystal
3D printing
Carbon nanotube
Agglomeration
Atomic defect
Multiscale design and homogenization
Coupled problems
Finite element analysis
Smart materials
Network of contacts
description Piezoelectric matrix-inclusion composites based on lead-free ceramics have attracted attention due to the possibility of manufacturing environmentally friendly devices using scalable emerging technologies such as 3D printing. However, lead-free materials lag lead-based piezo-composites in terms of performance, thus necessitating new design strategies to escalate piezoelectric response. Here, we build a modeling paradigm for improving the piezoelectric performance through improved matrices and optimal polycrystallinity in the piezoelectric inclusions. By incorporating carbon nanotubes in the matrix, we demonstrate 2–3 orders of improvement in the piezoelectric response, through simultaneous hardening of the matrix and improvement in its permittivity. By tuning the polycrystallinity of the piezoelectric inclusions, we show considerable improvements exceeding 50% in the piezo-response, compared to single crystal inclusions. We further analyze the influence of carbon nanotube agglomerations at supramolecular length scales, as well as vacancy defects in the nanotubes at the atomic level, on composite performance. Although nanomaterial agglomeration is conventionally considered undesirable, we show that, near nanotube percolation, clustering of nanotubes can lead to better matrix hardening and higher permittivities, leading to improvements exceeding 30% in the piezoelectric response compared to non-agglomerated architectures. We further demonstrate that although atomic vacancy defects in nanotubes effectively soften the matrix, this can be compensated by agglomeration of nanotubes at larger length-scales.
publishDate 2019
dc.date.none.fl_str_mv 2019
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/11441/155010
https://doi.org/10.1016/j.compstruct.2019.111033
url https://hdl.handle.net/11441/155010
https://doi.org/10.1016/j.compstruct.2019.111033
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Composite Structures, 224, 111033.
DPI2014-53947-R
DPI2017-89162-R
https://www.sciencedirect.com/science/article/pii/S0263822319313200
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:idUS. Depósito de Investigación de la Universidad de Sevilla
instname:Universidad de Sevilla (US)
instname_str Universidad de Sevilla (US)
reponame_str idUS. Depósito de Investigación de la Universidad de Sevilla
collection idUS. Depósito de Investigación de la Universidad de Sevilla
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,300724

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