Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10620403 | Acta Materialia | 2012 | 8 Pages |
Abstract
Molecular dynamics simulations are performed to investigate a spontaneous self-healing process in fractured GaAs nanowires with a zinc blende structure. The results show that such self-healing can indeed occur via rebonding of Ga and As atoms across the fracture surfaces, but it can be strongly influenced by several factors, including wire size, number of healing cycles, temperature, fracture morphology, oriented attachment and atomic diffusion. For example, it is found that the self-healing capacity is reduced by 46% as the lateral dimension of the wire increases from 2.3 to 9.2Â nm, and by 64% after 24 repeated cycles of fracture and healing. Other factors influencing the self-healing behavior are also discussed.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Jun Wang, Chunsheng Lu, Qi Wang, Pan Xiao, Fujiu Ke, Yilong Bai, Yaogen Shen, Yanbo Wang, Bin Chen, Xiaozhou Liao, Huajian Gao,