Shape-shifting alloys hold promise

Imagine untwisting a finger-size spring, then holding the flame from a lighter underneath the unraveled section. Like magic, it twirls itself into a spring again because the metal alloy remembered its original shape.

Robot arms with the flexibility of an elephant's trunk

Unlike conventional robot arms with hinged and swivel joints, new flexible arms being developed by Professor Stefan Seelecke and his research group at Saarland University are constructed using muscles made from shape-memory ...

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