AI Insight
Simulations have demonstrated that amorphous materials like glass can store mechanical memories despite their disordered molecular structure. Unlike crystalline solids with repeating patterns, these glassy materials have randomly arranged molecules, yet they can "remember" how they previously responded to external forces. This memory effect means their mechanical response to current forces depends on their history of past deformations.
Why it matters
This discovery could lead to new applications in materials engineering, potentially enabling the development of materials that can record and retain information about their mechanical history. Such capabilities might be useful for sensors, structural health monitoring systems, or smart materials that adapt based on accumulated stress experiences.
Amorphous materials such as glass are solids whose internal structure lacks a repeating pattern. Their molecules are arranged in a random and irregular way. Surprisingly, these disordered materials can “remember” past mechanical experiences; that is, the way they respond to a force can depend on how they have responded to external forces before.
Source: Random deformation lets glassy materials store precise mechanical memories, simulations reveal