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dc.contributor.author
Rojas Nunez, J.  
dc.contributor.author
Baltazar, S. E.  
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Gonzalez, R. I.  
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Bringa, Eduardo Marcial  
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Allende, S.  
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Kiwi, M.  
dc.contributor.author
Valencia, F. J.  
dc.date.available
2022-09-20T14:50:35Z  
dc.date.issued
2020-12  
dc.identifier.citation
Rojas Nunez, J.; Baltazar, S. E.; Gonzalez, R. I.; Bringa, Eduardo Marcial; Allende, S.; et al.; Polycrystalline Ni nanotubes under compression: a molecular dynamics study; Nature Research; Scientific Reports; 10; 1; 12-2020  
dc.identifier.uri
http://hdl.handle.net/11336/169598  
dc.description.abstract
Mechanical properties of nanomaterials, such as nanowires and nanotubes, are an important feature for the design of novel electromechanical nano-architectures. Since grain boundary structures and surface modifications can be used as a route to modify nanostructured materials, it is of interest to understand how they affect material strength and plasticity. We report large-scale atomistic simulations to determine the mechanical response of nickel nanowires and nanotubes subject to uniaxial compression. Our results suggest that the incorporation of nanocrystalline structure allows completely flexible deformation, in sharp contrast with single crystals. While crystalline structures at high compression are dominated by dislocation pinning and the multiplication of highly localized shear regions, in nanocrystalline systems the dislocation distribution is significantly more homogeneous. Therefore, for large compressions (large strains) coiling instead of bulging is the dominant deformation mode. Additionally, it is observed that nanotubes with only 70% of the nanowire mass but of the same diameter, exhibit similar mechanical behavior up to 0.3 strain. Our results are useful for the design of new flexible and light-weight metamaterials, when highly deformable struts are required.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
Nature Research  
dc.rights
info:eu-repo/semantics/openAccess  
dc.rights.uri
https://creativecommons.org/licenses/by/2.5/ar/  
dc.subject
MOLECULAR DYNAMICS  
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NANOTUBE  
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STRAIN  
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Física de los Materiales Condensados  
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Ciencias Físicas  
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CIENCIAS NATURALES Y EXACTAS  
dc.title
Polycrystalline Ni nanotubes under compression: a molecular dynamics study  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2022-09-13T17:21:43Z  
dc.identifier.eissn
2045-2322  
dc.journal.volume
10  
dc.journal.number
1  
dc.journal.pais
Reino Unido  
dc.description.fil
Fil: Rojas Nunez, J.. Universidad de Santiago de Chile; Chile  
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Fil: Baltazar, S. E.. Universidad de Santiago de Chile; Chile  
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Fil: Gonzalez, R. I.. Universidad Mayor; Chile  
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Fil: Bringa, Eduardo Marcial. Universidad Mayor; Chile. Universidad de Mendoza. Facultad de Ingeniería; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina  
dc.description.fil
Fil: Allende, S.. Universidad de Santiago de Chile; Chile  
dc.description.fil
Fil: Kiwi, M.. Universidad de Santiago de Chile; Chile  
dc.description.fil
Fil: Valencia, F. J.. Universidad de Santiago de Chile; Chile. Universidad Mayor; Chile  
dc.journal.title
Scientific Reports  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1038/s41598-020-76276-y  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.nature.com/articles/s41598-020-76276-y