To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Movie S1. The time evolution of the rotating phase of a chiral active droplet. (ζ1= 0 and ζ2= 4.8.) The initial state is a spherical droplet with uniform polarization inside. Contractile and chiral activities codetermine the helicity of swimming droplet trajectories Elsen Tjhung, Michael E. Cates, and Davide Marenduzzo PNAS. 2017. 114:4631-4636 DOI: 10.1073/pnas.1619960114 Download Original Video Browse All Videos »