To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Movie S1. Propulsion of a single stroke swimmer. The distance travelled is approximately 1.15l where l is the body length of the swimmer. Harnessing bistability for directional propulsion of soft, untethered robots Tian Chen, Osama R. Bilal, Kristina Shea, and Chiara Daraio PNAS. 2018. 115:5698-5702 DOI: 10.1073/pnas.1800386115 Download Original Video Browse All Videos »