To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Movie S5. The snake robot performing frequency turning in a sand bed due to a 0.6 ratio in spatial frequency of the vertical and horizontal waves. Modulation of orthogonal body waves enables high maneuverability in sidewinding locomotion Henry C. Astley, Chaohui Gong, Jin Dai, Matthew Travers, Miguel M. Serrano, Patricio A. Vela, Howie Choset, Joseph R. Mendelson, David L. Hu, and Daniel I. Goldman PNAS. 2015. 112:6200-6205 DOI: 10.1073/pnas.1418965112 Download Original Video Browse All Videos »