Video 8
Movie S8. Asymmetric bio-bot movement at various frequencies. Top-view movie comparing the contraction and movement of an asymmetric bio-bot at 1, 2, and 4 Hz over the course of 10 s. Scale bar, 1 mm.
Three-dimensionally printed biological machines powered by skeletal muscle
PNAS. 2014. 111:10125-10130 DOI: 10.1073/pnas.1401577111