Network topology uniquely determines glass fragility
Phys. Rev. Materials 9, 105601 – Published 8 October, 2025
DOI: https://doi.org/10.1103/2m4g-w4yk
Abstract
The fragility of several network-forming glasses is shown to display a single dependence on the average bond density of the topological network—a network that reflects both coarse-graining for oxide polyhedra and topological corrections for larger super-structural units. Unlike previous efforts to confirm this result, which relied on adjustable modeling, the current demonstration—involving dynamic light scattering in glass melts—is achieved in the absence of any such modeling biases.
