Robots & Machines

New Shape-Memory Metal Practically Never Wears Out

Alex KlokusMay 29th 2015
  • Manfred Wuttig, a material scientist at the University of Maryland who helped lead the team, said the metal’s “fortuitous discovery,” was part of a long, frustrating hunt for durable shape-memory metal.
  • Normally, as shape-memory materials snap in and out of their different atomic configurations, they develop small, molecular-level injuries (almost like knots) to their natural Tinkertoy atomic structure because of the stress of changing shape. But these molecular injuries seem to happen rarely if ever in the scientist’s new shape-memory alloy, which is largely made of titanium and nickel, with some copper and a dash
  • The new alloy was only created in a thin film measuring several hundred micrometers, and the next step is to scale it up into a bulk alloy.

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