THERMODYNAMICS - ENTROPY AND THE SECOND LAW - HEAT CYCLES NC State University Faculty Access

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Memory Wire
# 4F30.601


Description: A wire made out of nickel and titanium, called nitinol, can be bent easily when cooled down and straightens forcefully when heated. It "remembers" a shape when molded while held in a flame. Straighten the wire in ice water, then hold in the flame again. It will go back to the shape you molded it to hold. Can be used to discuss various applications including nitinol engines and deployment of satellite antennas.

Hazards: Keep away from face while doing the demo; the wire straightens quite forcefully and could cause injury.

Purchased/Built: purchased

Setup Time: 5 minutes

Quant. in Demo Room: 1


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