shape memory alloy

Shape memory alloys are special materials that can "remember" their original shape. When these alloys are deformed, like being bent or twisted, they can return to their original form when heated. This unique property results from the arrangement of their atoms, which changes between two phases: a deformed phase at lower temperatures and a stable phase at higher temperatures. Shape memory alloys are used in various applications, including medical devices, actuators, and even in eyeglass frames, because they can respond dynamically to changes in temperature without needing additional mechanisms.