When a metacap “snaps”, it pops open and closed, pushing air back and forth. This snapping allows a soft robot to propel and grip without any electronics. The new ribbed metacaps permit unprecedented levels of control and speed, enabling robots delicate enough to gently grasp a ripe strawberry and powerful enough to swim through choppy, dangerous waters.
Snapping metacaps propel soft robot design
![](https://shuyang.seas.upenn.edu/wp-content/uploads/2023/02/Jin-2023-High_speed_grasping_2.webp)