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Article: Size-dependent deformation of nanocrystalline Pt nanopillars

TitleSize-dependent deformation of nanocrystalline Pt nanopillars
Authors
Keywordsmechanical properties
Size effect
molecular dynamics
nanocrystalline
Issue Date2012
Citation
Nano Letters, 2012, v. 12, n. 12, p. 6385-6392 How to Cite?
AbstractWe report the synthesis, mechanical properties, and deformation mechanisms of polycrystalline, platinum nanocylinders of grain size d = 12 nm. The number of grains across the diameter, D/d, was varied from 5 to 80 and 1.5 to 5 in the experiments and molecular dynamics simulations, respectively. An abrupt weakening is observed at a small D/d, while the strengths of large nanopillars are similar to bulk. This "smaller is weaker" trend is opposite to the "smaller is stronger" size effect in single crystalline nanostructures. The simulations demonstrate that the size-dependent behavior is associated with the distinct deformation mechanisms operative in interior versus surface grains. © 2012 American Chemical Society.
Persistent Identifierhttp://hdl.handle.net/10722/303394
ISSN
2023 Impact Factor: 9.6
2023 SCImago Journal Rankings: 3.411
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorGu, X. Wendy-
dc.contributor.authorLoynachan, Colleen N.-
dc.contributor.authorWu, Zhaoxuan-
dc.contributor.authorZhang, Yong Wei-
dc.contributor.authorSrolovitz, David J.-
dc.contributor.authorGreer, Julia R.-
dc.date.accessioned2021-09-15T08:25:13Z-
dc.date.available2021-09-15T08:25:13Z-
dc.date.issued2012-
dc.identifier.citationNano Letters, 2012, v. 12, n. 12, p. 6385-6392-
dc.identifier.issn1530-6984-
dc.identifier.urihttp://hdl.handle.net/10722/303394-
dc.description.abstractWe report the synthesis, mechanical properties, and deformation mechanisms of polycrystalline, platinum nanocylinders of grain size d = 12 nm. The number of grains across the diameter, D/d, was varied from 5 to 80 and 1.5 to 5 in the experiments and molecular dynamics simulations, respectively. An abrupt weakening is observed at a small D/d, while the strengths of large nanopillars are similar to bulk. This "smaller is weaker" trend is opposite to the "smaller is stronger" size effect in single crystalline nanostructures. The simulations demonstrate that the size-dependent behavior is associated with the distinct deformation mechanisms operative in interior versus surface grains. © 2012 American Chemical Society.-
dc.languageeng-
dc.relation.ispartofNano Letters-
dc.subjectmechanical properties-
dc.subjectSize effect-
dc.subjectmolecular dynamics-
dc.subjectnanocrystalline-
dc.titleSize-dependent deformation of nanocrystalline Pt nanopillars-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1021/nl3036993-
dc.identifier.pmid23148764-
dc.identifier.scopuseid_2-s2.0-84870954631-
dc.identifier.volume12-
dc.identifier.issue12-
dc.identifier.spage6385-
dc.identifier.epage6392-
dc.identifier.eissn1530-6992-
dc.identifier.isiWOS:000312122100057-

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