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Wang, B, Y Yu, M Wang, J Mauro, and M Bauchy. 2016. "Nanoductility in silicate glasses is driven by topological heterogeneity." Physical Review B, 6, 93, 64202. https://journals.aps.org/prb/abstract/10.1103/PhysRevB.93.064202.


Wang, B, Y Yu, M Wang, J Mauro, and M Bauchy. 2016. "Nanoductility in silicate glasses is driven by topological heterogeneity." Physical Review B, 6, 93, 64202. https://journals.aps.org/prb/abstract/10.1103/PhysRevB.93.064202.
"The existence of nanoscale ductility during the fracture of silicate glasses remains controversial. Here, based on molecular dynamics simulations coupled with topological constraint theory, we show that nano-ductility arises from the spatial heterogeneity of the atomic network's rigidity. Specifically, we report that localized floppy modes of deformation in under-constrained regions of the glass enable plastic deformations of the network, resulting in permanent change in bond configurations. Ultimately, these heterogeneous plastic events percolate, thereby resulting in a non-brittle mode of fracture. This suggests that nano-ductility is intrinsic to multi-component silicate glasses having nanoscale heterogeneities."

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