Scaling up biohybrid robots has been difficult due to the weak contractile force of lab-grown muscles, the risk of necrosis ...

When electrically stimulated, the muscles ... the hand can’t yet grasp or hold heavier objects, the research shows potential for future applications in prosthetics and drug testing models.

The hand is made of a 3D-printed plastic base, with tendons of human muscle tissue moving the fingers. Until now, biohybrid devices have typically been on a much smaller scale (about one ...