The robot has a gold and iron core and is surrounded by a gold cage. DNA serves as its clutch.

Jin Woo Cheon

A nanoscale Robot could engage or disengage its engine with a clutch, allowing for more precise control of its motion. It can be used to kill harmful cells.

Small claws already exist in nature – for example, bacteria Bacillus subtilis There are long, hair-like structures called flagella, each attached to a rotating molecular motor. “Once [the bacteria] Get to your target area, they will relax,” he says. Jin Woo Cheon On…