A shape memory alloy (SMA, also known as a smart metal, memory alloy, or muscle wire) is an alloy that 'remembers' its shape, and can be returned to that shape after being deformed, by applying heat to the alloy. Shape memory alloys have numerous applicati
A shape memory alloy (SMA, also known as a smart metal, memory alloy, or muscle wire) is an alloy that 'remembers' its shape, and can be returned to t...