To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Movie S3. Actuation mechanisms of the four-unit robotic arm Stretchable origami robotic arm with omnidirectional bending and twisting Shuai Wu, Qiji Ze, Jize Dai, Nupur Udipi, Glaucio H. Paulino, and Ruike Zhao PNAS. 2021. 118:None-None DOI: 10.1073/pnas.2110023118 Download Original Video Browse All Videos »