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Портал Begell Электронная Бибилиотека e-Книги Журналы Справочники и Сборники статей Коллекции
International Journal for Multiscale Computational Engineering
Импакт фактор: 1.016 5-летний Импакт фактор: 1.194 SJR: 0.452 SNIP: 0.68 CiteScore™: 1.18

ISSN Печать: 1543-1649
ISSN Онлайн: 1940-4352

Выпуски:
Том 17, 2019 Том 16, 2018 Том 15, 2017 Том 14, 2016 Том 13, 2015 Том 12, 2014 Том 11, 2013 Том 10, 2012 Том 9, 2011 Том 8, 2010 Том 7, 2009 Том 6, 2008 Том 5, 2007 Том 4, 2006 Том 3, 2005 Том 2, 2004 Том 1, 2003

International Journal for Multiscale Computational Engineering

DOI: 10.1615/IntJMultCompEng.v7.i3.40
pages 205-215

Deformation and Stability of Copper Nanowires under Bending

Yonggang Zheng
State Key Laboratory of Structure Analysis for Industrial Equipment, Department of Engineering Mechanics, Faculty of Vehicle Engineering and Mechanics, Dalian University of Technology, Dalian 116024
Hongwu Zhang
Department of Engineering Mechanics, Faculty of Vehicle Engineering and Mechanics, State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian 116024, P. R. China
Zhen Chen
Department of Civil & Environmental Engineering, University of Missouri, USA; Department of Engineering Mechanics, Faculty of Vehicle Engineering and Mechanics, Dalian University of Technology, Dalian 116024, P. R. China
Shan Jiang
State Key Laboratory of Structure Analysis for Industrial Equipment, Department of Engineering Mechanics, Faculty of Vehicle Engineering and Mechanics, Dalian University of Technology, Dalian 116024, China

Краткое описание

Using molecular dynamics simulations and the embedded-atom method, the bending deformation and stability of copper nanowires are investigated in this article. It is found that the plastic deformation is mainly accommodated by the propagation of and the interaction between partial dislocations nucleated from surfaces, with twinning being a very common deformation mode. Simulation results also show that the copper nanowires exhibit a decrease of resistance against plastic deformation and tend to become homogeneous with the increase of the length, while the resistance increases with the increase of the thickness under bending. These results are consistent with those from the instability analysis based on the local Hessian matrix and suggest that the structure identification method based on the Voronoi construction can be used as a reasonable criterion for instability analysis. In addition, it is also found that two- and three-conjoint fivefold deformation twins can be formed in the quasi one-dimensional nanostructures due to the abundance of partial dislocations, stacking faults, and twins.

ЛИТЕРАТУРА

  1. Lieber, C. M., Nanoscale science and technology: Building a big future from small things. DOI: 10.1557/mrs2003.144

  2. Chang, P. C., Fan, Z., Wang, D., Tseng, W. Y., Chiou, W. A., Hong, J., and Ju, J. G., ZnO nanowires synthesized by vapor trapping CVD method. DOI: 10.1021/cm049182c

  3. Seryogin, G., Shalish, H., Moberlychan, W., and Narayanamurti, V., Catlytic hydride vapor phase epitaxy growth of GaN nanowires. DOI: 10.1088/0957-4484/16/10/058

  4. Verheijen, M. A., Immink, G., de Smet, T., Borgstrom, M. T., and Bakkers, E. P, Growth kinetics of heterostructured GaP-GaAs nanowires. DOI: 10.1021/ja057157h


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