Journal
SCIENCE ADVANCES
Volume 8, Issue 11, Pages -Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/sciadv.abn0681
Keywords
-
Categories
Funding
- Australian Research Council [FT180100594, DP150104483]
- Villum Foundation [VKR023371]
- Monash Centre for Electron Microscopy
- Australian Research Council [FT180100594] Funding Source: Australian Research Council
Ask authors/readers for more resources
This study reveals a strong correlation between the centrosymmetry of nearest-neighbor polyhedra and the local mechanical stability in glasses. By examining the distribution of local stability and centrosymmetry, the underlying relationship between particle-level structure and larger-scale behavior is uncovered, demonstrating the significance of local structural transformations in predicting stability.
The mechanical properties of crystals are controlled by the translational symmetry of their structures. But for glasses with a disordered structure, the link between the symmetry of local particle arrangements and stability is not well established. In this contribution, we provide experimental verification that the centrosymmetry of nearest-neighbor polyhedra in a glass strongly correlates with the local mechanical stability. We examine the distribution of local stability and local centrosymmetry in a glass during aging and deformation using microbeam x-ray scattering. These measurements reveal the underlying relationship between particle-level structure and larger-scale behavior and demonstrate that spatially connected, coordinated local transformations to lower symmetry structures are fundamental to these phenomena. While glassy structures lack obvious global symmetry breaking, local structural symmetry is a critical factor in predicting stability.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available