Atomistic level studies on the tensile behavior of GaN nanotubes under uniaxial tension

Z. G. Wang (), X. T. Zu, F. Gao and W. J. Weber

The European Physical Journal B: Condensed Matter and Complex Systems, 2008, vol. 61, issue 4, 413-418

Abstract: Molecular dynamics method with the Stillinger-Weber (SW) potential has been employed to study the responses of GaN nanotubes (GaNNTs) to a uniaxial tensile load along the axial direction. It has been revealed that GaNNTs exhibits a completely different tensile behavior at different temperatures, i.e. ductility at higher deformation temperatures and brittleness at lower temperatures, leading to a brittle to ductile transition (BDT). Both the BDT temperature and the critical stress increases with increasing thickness of GaNNTs, and the critical stress at higher temperature are lower than those at lower temperature. These results on the tensile behaviors of GaNNTs in an atomic level will provide a good reference to its promising applications. Copyright EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2008

Keywords: 62.25.+g Mechanical properties of nanoscale systems; 65.80.+n Thermal properties of small particles; nanocrystals; and nanotubes; 02.70.Ns Molecular dynamics and particle methods (search for similar items in EconPapers)
Date: 2008
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DOI: 10.1140/epjb/e2008-00091-3

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