Wang, BinjunZhang, HongtiLou, JunLu, Yang2017-11-152017-11-152018Wang, Binjun, Zhang, Hongti, Lou, Jun, et al.. "‘Unzipping’ of twin lamella in nanotwinned nickel nanowires under flexural bending." <i>Materials Research Letters,</i> 6, no. 1 (2018) Taylor & Francis: 13-21. http://dx.doi.org/10.1080/21663831.2017.1383317.https://hdl.handle.net/1911/98817We 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.engThis is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.Journal articleUnzipping_twin_lamella_nanotwinned_nickel_nanowires_under_flexural_bendinghttp://dx.doi.org/10.1080/21663831.2017.1383317