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Atypical Defect Motions in Brittle Layered Sodium Titanate Nanowires.
Bo, Arixin; Chen, Kai; Pickering, Edmund; Zhan, Haifei; Bell, John; Du, Aijun; Zhang, Yongqiang; Wang, Xiaoguang; Zhu, Huaiyong; Shan, Zhiwei; Gu, Yuantong.
Afiliação
  • Bo A; School of Chemistry, Physics and Mechanical Engineering , Queensland University of Technology , 2 George Street , Brisbane , Queensland 4000 , Australia.
  • Chen K; Center for Advancing Materials Performance from the Nanoscale (CAMP-Nano) & Hysitron Applied Research Center in China (HARCC), State Key Laboratory for Mechanical Behavior of Materials , Xi'an Jiaotong University , Xi'an , Shaanxi 710049 , China.
  • Pickering E; School of Chemistry, Physics and Mechanical Engineering , Queensland University of Technology , 2 George Street , Brisbane , Queensland 4000 , Australia.
  • Zhan H; School of Chemistry, Physics and Mechanical Engineering , Queensland University of Technology , 2 George Street , Brisbane , Queensland 4000 , Australia.
  • Bell J; School of Chemistry, Physics and Mechanical Engineering , Queensland University of Technology , 2 George Street , Brisbane , Queensland 4000 , Australia.
  • Du A; School of Chemistry, Physics and Mechanical Engineering , Queensland University of Technology , 2 George Street , Brisbane , Queensland 4000 , Australia.
  • Zhang Y; Center for Advancing Materials Performance from the Nanoscale (CAMP-Nano) & Hysitron Applied Research Center in China (HARCC), State Key Laboratory for Mechanical Behavior of Materials , Xi'an Jiaotong University , Xi'an , Shaanxi 710049 , China.
  • Wang X; Center for Advancing Materials Performance from the Nanoscale (CAMP-Nano) & Hysitron Applied Research Center in China (HARCC), State Key Laboratory for Mechanical Behavior of Materials , Xi'an Jiaotong University , Xi'an , Shaanxi 710049 , China.
  • Zhu H; School of Chemistry, Physics and Mechanical Engineering , Queensland University of Technology , 2 George Street , Brisbane , Queensland 4000 , Australia.
  • Shan Z; Center for Advancing Materials Performance from the Nanoscale (CAMP-Nano) & Hysitron Applied Research Center in China (HARCC), State Key Laboratory for Mechanical Behavior of Materials , Xi'an Jiaotong University , Xi'an , Shaanxi 710049 , China.
  • Gu Y; School of Chemistry, Physics and Mechanical Engineering , Queensland University of Technology , 2 George Street , Brisbane , Queensland 4000 , Australia.
J Phys Chem Lett ; 9(20): 6052-6059, 2018 Oct 18.
Article em En | MEDLINE | ID: mdl-30222361
ABSTRACT
In situ tensile tests show atypical defect motions in the brittle Na2Ti3O7 (NTO) nanowire (NW) within the elastic deformation range. After brittle fracture, elastic recovery of the NTO NW is followed by reversible motion of the defects in a time-dependent manner. An in situ cyclic loading-unloading test shows that these mobile defects shift back and forth along the NW in accordance with the loading-unloading cycles and eventually restore their initial positions after the load is completely removed. The existence of the defects within the NTO NWs and their motions does not lead to plastic deformation of the NW. The atypical defect motion is speculated to be the result of the glidibility of the TiO6 layers, where weakly bonded cation layers are in between. Exploration of the above novel observation can establish new understandings of the deformation behavior of superlattice nanostructures.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: J Phys Chem Lett Ano de publicação: 2018 Tipo de documento: Article País de afiliação: Austrália
Texto completo
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XML
PubMed Links
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: J Phys Chem Lett Ano de publicação: 2018 Tipo de documento: Article País de afiliação: Austrália