Plastic deformation of pentagonal silver nanowires: Comparison between AFM nanoindentation and atomistic simulations

Published

Journal Article

The plastic deformation of a pentagonal silver nanowire is studied by nanoindentation using an atomic force microscope (AFM). AFM images of the residual indent reveal the formation of a neck and surface atomic steps. To study the microscopic deformation mechanism, the indentation force-depth curve is converted to an indentation stress-strain curve and compared to the tensile stress-strain curves predicted by the atomistic simulations of pentagonal silver nanowires. The indentation stress-strain curve exhibits a series of yielding events, attributed to the nucleation and movement of dislocations. The maximum stress measured during nanoindentation (2 GPa) is comparable to the tensile yield strength predicted by atomistic simulations. © 2008 The American Physical Society.

Full Text

Duke Authors

Cited Authors

  • Lucas, M; Leach, AM; McDowell, MT; Hunyadi, SE; Gall, K; Murphy, CJ; Riedo, E

Published Date

  • June 13, 2008

Published In

Volume / Issue

  • 77 / 24

Electronic International Standard Serial Number (EISSN)

  • 1550-235X

International Standard Serial Number (ISSN)

  • 1098-0121

Digital Object Identifier (DOI)

  • 10.1103/PhysRevB.77.245420

Citation Source

  • Scopus