Shape-memory polymer
（重定向自Shape Memory Polymer）
![Result of the cyclic thermomechanical test](/Images/godic/202502/10/Wiki_thermomechanical_test2657.jpg")
![](/Images/godic/202502/10/Wiki_norbornene2657.jpg")
![A schematic representation of reversible LASMP crosslinking](/Images/godic/202502/10/Lightinduced2657.jpg")
Shape-memory polymers (SMPs) are polymeric smart materials that have the ability to return from a deformed state (temporary shape) to their original (permanent) shape induced by an external stimulus (trigger), such as temperature change.