This metal “robot” can liquefy, escape from a cage and return to its original shape

The male cannot move on its own, but is made of magnetic, microscopic particles encased in a gallium shell. This is a soft metal that already melts at a low temperature, about 29 degrees Celsius.

When exposed to a magnetic field, the particles heat up, similar to how an induction stove works, and the gallium melts. The magnetic field is then used to move the liquid metal in a specific direction.

When the gallium cools in a mold, it returns to its original solid shape without losing strength.