ISSN:
1077-3118
Source:
AIP Digital Archive
Topics:
Physics
Notes:
Multimillion-atom molecular dynamics simulations of silicon diselenide nanowires are used to study mechanical properties and changes in nanowire structure under strain. The nanowires transform from a body-centered orthorhombic structure to a body-centered tetragonal structure under uniaxial strain, which causes an unexpected elongation in one of the transverse directions. For larger strains, the nanowires undergo a process of local amorphization, followed by fracture at one of the resulting crystalline–amorphous interfaces. The critical strain for fracture is 15%. Local temperature and stress distributions after failure are interpreted in terms of the local amorphization. © 2001 American Institute of Physics.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.1374237