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- Publisher Website: 10.1080/21663831.2017.1383317
- Scopus: eid_2-s2.0-85031945494
- WOS: WOS:000428141500002
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Article: ‘Unzipping’ of twin lamella in nanotwinned nickel nanowires under flexural bending
Title | ‘Unzipping’ of twin lamella in nanotwinned nickel nanowires under flexural bending |
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Authors | |
Keywords | in situ TEM molecular dynamics simulation nanomechanics Nanotwin nickel nanowire |
Issue Date | 2018 |
Citation | Materials Research Letters, 2018, v. 6, n. 1, p. 13-21 How to Cite? |
Abstract | We report the fabrication of nickel nanowires with parallel growth-twin structures (‘twin lamella’ along the wire axis) by electrochemical deposition, and demonstrate an interesting twin ‘unzipping’ phenomenon in such nanotwinned nanowires under bending. Through in situ TEM, we found that ‘unzipping’ of twin lamella was achieved by gradually increasing twin spacing along the wire axis via a layer-by-layer twin boundary migration process. Molecular dynamics simulations suggest that partial dislocation slip is responsible for activating the ‘unzipping’, with a multi-step-process involving dislocation loop initiation, expansion and partially annihilation. Our work could provide new insights into the deformation mechanisms of nanotwinned 1-D metallic nanostructures. IMPACT STATEMENT Nickel nanowires with parallel-twin structures were fabricated and demonstrated an interesting twin lamella ‘unzipping’ behavior upon flexural bending, which provides new insights into the deformation mechanisms of nanotwinned metallic materials. |
Persistent Identifier | http://hdl.handle.net/10722/326139 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Wang, Binjun | - |
dc.contributor.author | Zhang, Hongti | - |
dc.contributor.author | Lou, Jun | - |
dc.contributor.author | Lu, Yang | - |
dc.date.accessioned | 2023-03-09T09:58:18Z | - |
dc.date.available | 2023-03-09T09:58:18Z | - |
dc.date.issued | 2018 | - |
dc.identifier.citation | Materials Research Letters, 2018, v. 6, n. 1, p. 13-21 | - |
dc.identifier.uri | http://hdl.handle.net/10722/326139 | - |
dc.description.abstract | We report the fabrication of nickel nanowires with parallel growth-twin structures (‘twin lamella’ along the wire axis) by electrochemical deposition, and demonstrate an interesting twin ‘unzipping’ phenomenon in such nanotwinned nanowires under bending. Through in situ TEM, we found that ‘unzipping’ of twin lamella was achieved by gradually increasing twin spacing along the wire axis via a layer-by-layer twin boundary migration process. Molecular dynamics simulations suggest that partial dislocation slip is responsible for activating the ‘unzipping’, with a multi-step-process involving dislocation loop initiation, expansion and partially annihilation. Our work could provide new insights into the deformation mechanisms of nanotwinned 1-D metallic nanostructures. IMPACT STATEMENT Nickel nanowires with parallel-twin structures were fabricated and demonstrated an interesting twin lamella ‘unzipping’ behavior upon flexural bending, which provides new insights into the deformation mechanisms of nanotwinned metallic materials. | - |
dc.language | eng | - |
dc.relation.ispartof | Materials Research Letters | - |
dc.subject | in situ TEM | - |
dc.subject | molecular dynamics simulation | - |
dc.subject | nanomechanics | - |
dc.subject | Nanotwin | - |
dc.subject | nickel nanowire | - |
dc.title | ‘Unzipping’ of twin lamella in nanotwinned nickel nanowires under flexural bending | - |
dc.type | Article | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1080/21663831.2017.1383317 | - |
dc.identifier.scopus | eid_2-s2.0-85031945494 | - |
dc.identifier.volume | 6 | - |
dc.identifier.issue | 1 | - |
dc.identifier.spage | 13 | - |
dc.identifier.epage | 21 | - |
dc.identifier.eissn | 2166-3831 | - |
dc.identifier.isi | WOS:000428141500002 | - |