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dc.contributor.author
Rojas Nunez, Javier  
dc.contributor.author
Valencia, Felipe  
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Gonzalez, Rafael I.  
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Bringa, Eduardo Marcial  
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Allende, Sebastian  
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Palma, Juan L.  
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Pereira, Alejandro  
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Escrig Murúa, Juan Eduardo  
dc.contributor.author
Baltazar, Samuel E.  
dc.date.available
2022-10-31T20:00:08Z  
dc.date.issued
2019-10  
dc.identifier.citation
Rojas Nunez, Javier; Valencia, Felipe; Gonzalez, Rafael I.; Bringa, Eduardo Marcial; Allende, Sebastian; et al.; Mechanical performance of lightweight polycrystalline Ni nanotubes; Elsevier; Computational Materials Science; 168; 10-2019; 81-86  
dc.identifier.issn
0927-0256  
dc.identifier.uri
http://hdl.handle.net/11336/175699  
dc.description.abstract
The mechanical properties of metallic nanowires and nanotubes were investigated using atomistic molecular dynamics simulations on Ni polycrystalline structures, similar to those experimentally obtained by Atomic Layer Deposition. We studied the response of nanostructures under uniaxial deformations with different thickness, geometry, and crystalline degree. Plastic deformation is due to stacking fault and coherent twin boundary formation, and to grain boundary activity. Different fracture processes are obtained from these systems, being the thin nanotubes failing thanks to a mix of brittle failure by grain boundary decohesion and ductile fracture due to significantly more twins than with a thicker nanotube and nanowire during the ductile fracture. The stress-strain curves, atomic displacements, and defects formation were analyzed, finding that nanotubes with a fraction of the volumetric mass have practically the same Young modulus and ultimate tensile stress, while fracture strain is slightly larger for nanowire. From all these studied cases, it is remarkable the result where ultra-thin nanotubes can withstand a 21% of tensile stress-strain with a similar yield strength than nanowires, but with a volumetric mass reduction of 60%, offering a lightweight alternative to design mechanical nanodevices with minimal loss of mechanical performance.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
Elsevier  
dc.rights
info:eu-repo/semantics/restrictedAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
MOLECULAR DYNAMICS SIMULATIONS  
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POLYCRYSTALLINE NANOMATERIALS  
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STRESS-STRAIN RESPONSE  
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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
Mechanical performance of lightweight polycrystalline Ni nanotubes  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2022-10-25T14:38:50Z  
dc.journal.volume
168  
dc.journal.pagination
81-86  
dc.journal.pais
Países Bajos  
dc.journal.ciudad
Amsterdam  
dc.description.fil
Fil: Rojas Nunez, Javier. Universidad de Santiago de Chile; Chile. Center for the Development of Nanoscience and Nanotechnology; Chile  
dc.description.fil
Fil: Valencia, Felipe. Universidad Mayor; Chile. Center for the Development of Nanoscience and Nanotechnology; Chile  
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Fil: Gonzalez, Rafael I.. Universidad Mayor; Chile. Center for the Development of Nanoscience and Nanotechnology; Chile  
dc.description.fil
Fil: Bringa, Eduardo Marcial. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza; Argentina. Universidad de Mendoza. Facultad de Ingeniería; Argentina  
dc.description.fil
Fil: Allende, Sebastian. Universidad de Santiago de Chile; Chile. Center for the Development of Nanoscience and Nanotechnology; Chile  
dc.description.fil
Fil: Palma, Juan L.. Universidad Central de Chile; Chile. Center for the Development of Nanoscience and Nanotechnology; Chile  
dc.description.fil
Fil: Pereira, Alejandro. Center for the Development of Nanoscience and Nanotechnology; Chile  
dc.description.fil
Fil: Escrig Murúa, Juan Eduardo. Universidad de Santiago de Chile; Chile  
dc.description.fil
Fil: Baltazar, Samuel E.. Universidad de Santiago de Chile; Chile. Center For The Development Of Nanoscience And Nanotechnology; Chile  
dc.journal.title
Computational Materials Science  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0927025619303416  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1016/j.commatsci.2019.05.062