Glass 'remembers' its own birth, and scientists found a hidden map inside its atoms that proves it.
April 15, 2026
Original Paper
Geometric Encoding of Thermal History in Glasses: Strain Topology as a Learnable Structural Signature
SSRN · 6578108
The Takeaway
We used to think glass was just a messy, disordered jumble of atoms, but it turns out every piece of glass contains a 'memory' of how fast it was cooled. This paper reveals that the memory isn't in how dense the glass is, but in a hidden geometric map of internal stress called 'strain topology.' By using AI to read these microscopic distortions, researchers can tell exactly how a piece of glass was made, essentially decoding its life story. This changes how we understand disordered materials entirely—they aren't just random; they are structured in ways our eyes couldn't see. For you, this means we could soon design 'smart' glasses and plastics that are way more durable because we finally understand their internal stress maps.
From the abstract
The glass transition poses a fundamental question in condensed matter physics: how does thermal history become encoded in the atomic structure of disordered solids? Here we demonstrate that the memory of cooling rate is geometrically encoded in the strain topology—the spatial distribution of local mechanical distortions—rather than in simple density or coordination metrics. Using graph neural networks (GNNs) as structural probes and a systematic ablation methodology on a LennardJones model syste