Size-dependent brittle-to-ductile transition in GaAs nano-rods

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review

2 Scopus Citations
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Author(s)

  • J. Wang
  • F. Song
  • F. J. Ke
  • Y. L. Bai
  • C. Lu

Detail(s)

Original languageEnglish
Pages (from-to)135-142
Journal / PublicationEngineering Fracture Mechanics
Volume150
Publication statusPublished - 1 Dec 2015

Abstract

GaAs is brittle at room temperature at the macro-scale; however, ductility emerges when its characteristic dimension reduces to the nano-scale. Using molecular dynamics simulations, we reveal that there is a brittle-to-ductile transition in GaAs nano-rods due to the competition between generation of cracks and initiation of dislocations. Such a competition is sensitive to aspect ratios of nano-rods. These results well explain experimentally observed ductility of GaAs nano-rods and have important implications for the design of semiconductor materials with tailored mechanical properties.

Research Area(s)

  • Brittle-to-ductile transition, Dislocation, GaAs nano-rods, Molecular dynamics simulation, Size effect

Citation Format(s)

Size-dependent brittle-to-ductile transition in GaAs nano-rods. / Wang, J.; Shen, Y. G.; Song, F.; Ke, F. J.; Bai, Y. L.; Lu, C.

In: Engineering Fracture Mechanics, Vol. 150, 01.12.2015, p. 135-142.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review