This exciting smart textiles and electronics project provides a fun way of using and understanding the properties of two smart materials, muscle wire and polymorph.
A polymorph or MDF model is constructed by the student. This is suspended by the muscle wire and via a set of levers. On passing a current through the wire the composition of the wire changes which makes it contract, the toy will then move its limbs and the spring will move them back.
History of muscle wire, how muscle wire is crimped, underlying technology, contraction time