Earlier we introduced you a prototype model of the Japan’s micro medical robot that could stay and move in the human body to eliminate disease, especially cancer. Now, UCLA School of Engineering lab has developed a world’s smallest robotic hand to perform a microsurgery that is one millimeter wide and can conveniently pick tiny objects from body. The device is controlled by air instead of electricity and has four fingers that are made of several small pieces of polymer balloons and Silicon. Polymer balloon are planted as ‘muscles’ at the joints and each balloon is connected to narrow channels through which air is pumped and when a balloon is inflated or deflated it results changes in angles between joints to make finger get contract or relaxed. The researchers are also anticipating latest version of microhand with optical fibres on the palm and an eye to facilitate doctors to see the movements of hands to get desired results.