Exploring dynamic heterogeneity of metallic glass via anomalous creep

Hierarchical dynamic relaxation and structural heterogeneity in metallic glasses revealed by fractional viscoelastic modeling

Breakdown of material-time scaling in the microscopic dynamics of metallic glasses

Physical aging in glasses is often described using the concept of material time, which assumes the underlying relaxation mechanism to remain the same as in equilibrium, but with a rate that changes during aging. Whether material time also captures the microscopic dynamics of metallic glasses, which differ qualitatively...

The Universal Role of Fragility on the Yielding Transition of Active Glass under Oscillatory Shear

The yielding transition marks the onset of irreversible plastic deformation in amorphous solids and plays a central role in determining the mechanical stability and failure of metallic glasses, colloidal suspensions, and biological assemblies. Despite extensive research, the microscopic factors governing the nature of...

Weakly non-linear creep of amorphous polymers near their glass transition, comparisons between models and experiment

The non-linear mechanics of amorphous polymers near the glass transition reveals a stress-induced acceleration of stress relaxation of nanometric sub-units. Recent theoretical work predicts that the local acceleration within these nano-domains should scale as the exponential of the squared local stress, a behavior now...

Dynamical Anisotropy of a Colloidal Glass Under Pressure

Pressure is a critical thermodynamic parameter that profoundly influences the physical properties of glasses. Pressure-induced densification and structural transformation endow glasses manufactured under such conditions with exceptional mechanical and optical properties. Although pressure-treated glasses have been char...

Crystallization of Glasses: A Theoretical Analysis of the Role of Fragility and Polymorphism in Crystals.

Here we develop an elasticity-based theory of crystallization in glasses that incorporates structural heterogeneity, fictive temperature, and polymorph-mediated pathways. In a glass, structural degrees of freedom are effectively frozen, so that the fictive temperature Tf remains higher than the ambient temperature T, r...