Nitinol is a type of metal wire made of nickel and titanium that is also known as “memory wire”, because it can remember its former shape and transition back to it with a temperature change.

The design uses thin strands of nickel-titanium wire to mimic muscles and move the hand's digits. Produced by Grace Raver. Video courtesy of Reuters. Follow BI Video: On Facebook More from Tech ...

Titanium has a low density and is a strong, lustrous, corrosion-resistant (including sea water, aqua regia and chlorine) transition metal with a silver color. Titanium can be alloyed with iron, ...