Metals with a Memory

Memory metals - nitinol being the one with which I am most familiar - are a fascinating material with their solid state transition radically changing the material's macroscopic shape. The old chestnut of turning a straight piece into a coil in hot water is nice, but the creativity of using metals with different transition temperatures to make a little sculpture here with uncurling biceps, straightening spine and neck, able to 'stand' straight up as the temperature rises is very well done.