Nitinol Memory Wire and Demonstration Kits
What do elephants and nitinol wire have in common? A good memory! Introduce students to a shape memory alloy that changes phases near 50° C and can be easily heat-treated to "remember" a certain shape. Then challenge students to explain the contradiction with metal properties when a straight piece of wire dropped in hot water contracts (not expands) to form a new shape. Nitinol wire can be reused an unlimited number of times. Kit includes a special tool to make intricate wire patterns.