Clone Robotics unveiled a robotic arm with muscles and synthetic skin. Muscles are mesh tubes filled with balls of acetaldehyde. When an electric current is applied to the muscles, the liquid boils, and the balls expand, which allows the muscle to contract quite quickly.
The skeleton of the hand is made of artificial bones that are as close to humans as possible and provide the same range of motion. You can move your hand and fingers, lift heavy objects, and so on. All thanks to complex combinations of artificial muscles and tendons.
The first customers can receive robotic arms at the end of this year. How much it will cost is unknown.