Liquid Metal
There is a liquid-metal alloy created by Chinese researchers at the Tsinghua University that creates complex shapes. It is formed from gallium iridium, and tin and can be electrically controlled. Jing Liu, one of the researchers who worked on the project, said that “the soft machine looks rather intelligent and (can) deform itself according to the space it voyages in, just like (the) Terminator does from the science-fiction film.”