I made this video at MIT to demonstrate shape memory behavior of a polymer. For more information please see the paper:
Srivastava et. al. (2010), "Thermally-actuated shape-memory polymers: experiments, theory, and numerical simulations," Journal of the Mechanics and Physics of Solids, 58, 1100--1124.
![](https://i.ytimg.com/vi/vuoorVtYWgk/mqdefault.jpg)