Yen-Wen Lu and Chang-Jin Kim at UCLA have created the World's Smallest robotic hand . The hand, which is capable of grasping an object 1mm across, has four fingers made of silicone and polymer joints. The hand operates pneumatically when the balloon joints are inflated. The hand is seen in th top right of the image. There's a movie of the hand in operation after the jump. You can find more about Lu and Kim's work on their website .
This is a companion discussion topic for the original entry at https://community.robotshop.com/index.php/blog/show/worlds-smallest-robotic-hand