So far no device had been able to mimic the complex motion of specialised muscles such as that of the human heart. But that's going to change now. A team of researchers at Harvard's Wyss Institute has developed a bio-inspired actuated material that mimics the complex motion of the heart muscle and could lead to better implantable medical devices and flexible robots. Rather than a simple pumping action a human heart circulates blood as if it were wringing a towel. (Read: Your heart can soon be repaired by biomaterials) The bottom of the heart twists as it contracts in an
