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Magneto-pneumatic hybrid-driven soft actuator with bidirectional torsion - EurekAlert
<p>The ability of the human wrist to rotate around the forearm axis in 2 directions is crucial for many daily activities. This rotation, limited to a range of approximately [-90°, 90°], restricts the wrist's capacity to execute complex operational tasks. For example, when we open or lock a door with a key, our wrist performs a large rotational movement. When we screw, the wrist needs to twist 180° several times. However, due to the limited rotation angle, the hand needs to leave the key or screwdriver several times to complete the entire work process. In order to realize large rotation ratio in a single actuator, a research team from Zhejiang University introduced a wrist-inspired magneto-pneumatic hybrid-driven soft actuator with bidirectional torsion capabilities based on the Kresling origami unit.</p>
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