Story perspectives

Revolutionary Polymer Changes Stiffness Over 1,000-Fold

11/5/2025

Summary

Story summary

Researchers at the Ulsan National Institute of Science and Technology (UNIST) have created a magnetic shape-memory polymer that switches stiffness by more than 1,000-fold.
The polymer uses stearyl methacrylate and ethylene glycol dimethacrylate and features a dual cross-linking structure.
Tiny neodymium-iron-boron microparticles embedded in the polymer boost magnetic responsiveness.
The material can be programmed into specific shapes, enabling potential uses in robotics and medical devices.

History

Historical Context

The invention of shape-memory alloys in 1960 by William F. Buehler marked a significant advancement in material science, enabling metals to revert to original shapes when heated. Recent developments at the Ulsan National Institute of Science and Technology have introduced a magnetic shape-memory polymer that can change stiffness by over 1,000-fold, enhancing applications in robotics and medical devices, and potentially transforming various industries.

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Story summary

Researchers at the Ulsan National Institute of Science and Technology (UNIST) have created a magnetic shape-memory polymer that switches stiffness by more than 1,000-fold.
The polymer uses stearyl methacrylate and ethylene glycol dimethacrylate and features a dual cross-linking structure.
Tiny neodymium-iron-boron microparticles embedded in the polymer boost magnetic responsiveness.
The material can be programmed into specific shapes, enabling potential uses in robotics and medical devices.

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