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Shape memory alloys: cooling with metal muscles
Researchers from the University of Saarland (Germany) are constructing an optimized prototype for an air-cooling system in which heat and cold are transferred using “muscles” made from a nickel-titanium alloy thanks to the elastocaloric effect.
Shape memory alloys (SMAs) are used to remove heat thanks to elastocaloric effect. “Shape memory” means that wires or sheets made from a nickel-titanium alloy have a certain ability to remember their original shape. If a nickel-titanium wire or sheet is deformed, the change in the crystal structure ...