dc.contributor.author | Fuster, Valeria | |
dc.contributor.author | Gómez Cortés, José Fernando | |
dc.contributor.author | Nó Sánchez, María Luisa | |
dc.contributor.author | San Juan Núñez, José María ![ORCID](/themes/Mirage2//images/orcid_16x16.png) | |
dc.date.accessioned | 2020-04-02T10:58:17Z | |
dc.date.available | 2020-04-02T10:58:17Z | |
dc.date.issued | 2020-02 | |
dc.identifier.citation | Advanced Electronic Materials 6(2) : (2020) // Article ID 1900741 | es_ES |
dc.identifier.issn | 2199-160X | |
dc.identifier.uri | http://hdl.handle.net/10810/42582 | |
dc.description.abstract | Shape-memory alloys (SMAs) are the most stretchable metallic materials thanks to their superelastic behavior associated with the stress-induced martensitic transformation. This property makes SMAs of potential interest for flexible and wearable electronic technologies, provided that their properties will be retained at small scale. Nanocompression experiments on Cu-Al-Be SMA single crystals demonstrate that micro- and nanopillars, between 2 mu m and 260 nm in diameter, exhibit a reproducible superelastic behavior fully recoverable up to 8% strain, even at the nanoscale. Additionally, these micro-/nanopillars exhibit a size effect on the critical stress for superelasticity, which dramatically increases for pillars smaller than approximate to 1 mu m in diameter, scaling with a power law of exponent n = -2. The observed size effect agrees with a theoretical model of homogeneous nucleation of martensite at small scale and the universality of this scaling power law for Cu-based SMAs is proposed. These results open new directions for using SMAs as stretchable conductors and actuating devices in flexible and wearable technologies. | es_ES |
dc.description.sponsorship | This work was supported by the Spanish Ministry of Economy and Competitiveness, MINECO, projects MAT2017-84069P and CONSOLIDER-INGENIO 2010 CSD2009-00013, as well as by the ELKARTEK-ACTIMAT project from the Industry Department of the Basque Government, and GIU-17/071 from the University of the Basque Country, UPV/EHU. This work made use of the FIB facilities of the SGIKER from the UPV/EHU. V.F. also acknowledges the Post-Doctoral Mobility Grant from the CONICET of Argentina, and J.F.G.-C. acknowledges the Post-Doctoral Grant (ESPDOC18/37) from the UPV/EHU. | es_ES |
dc.language.iso | eng | es_ES |
dc.publisher | Wiley | es_ES |
dc.relation | info:eu-repo/grantAgreement/MINECO/MAT2017-84069P | es_ES |
dc.relation | info:eu-repo/grantAgreement/MINECO/CONSOLIDER-INGENIO 2010 CSD2009-00013 | es_ES |
dc.rights | info:eu-repo/semantics/openAccess | es_ES |
dc.rights.uri | http://creativecommons.org/licenses/by/3.0/es/ | * |
dc.subject | nanocompression | es_ES |
dc.subject | shape-memory alloys | es_ES |
dc.subject | size effects | es_ES |
dc.subject | stretchable materials | es_ES |
dc.subject | superelasticity | es_ES |
dc.subject | CU-AL-BE | es_ES |
dc.subject | induced martensitic transformations | es_ES |
dc.subject | behavior | es_ES |
dc.subject | strength | es_ES |
dc.subject | pseudoelasticity | es_ES |
dc.subject | anisotropy | es_ES |
dc.subject | phase | es_ES |
dc.subject | gold | es_ES |
dc.title | Universal Scaling Law for the Size Effect on Superelasticity at the Nanoscale Promotes the Use of Shape‐Memory Alloys in Stretchable Devices | es_ES |
dc.type | info:eu-repo/semantics/article | es_ES |
dc.rights.holder | This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. | es_ES |
dc.rights.holder | Atribución 3.0 España | * |
dc.relation.publisherversion | https://onlinelibrary.wiley.com/doi/full/10.1002/aelm.201900741 | es_ES |
dc.identifier.doi | 10.1002/aelm.201900741 | |
dc.departamentoes | Física aplicada II | es_ES |
dc.departamentoes | Física de la materia condensada | es_ES |
dc.departamentoeu | Fisika aplikatua II | es_ES |
dc.departamentoeu | Materia kondentsatuaren fisika | es_ES |