Shape memory alloys
Walking through the showcase at the ARPA-E Energy Innovation Summit is a clear reminder on the close connection between energy and materials. Here General Motors is showing off research on shape memory alloys, a type of metal that will heat up when stretched and vice versa. The long-term plan of this research is take the waste heat from car engines and convert that into a motion to generate electricity. In the shorter term, it expects to use the material as a low-power replacement for actuators and motors in simple latches.
February 28, 2012 10:48 AM PST
Photo by: Martin LaMonica/CNET
| Caption by: Martin LaMonica
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