To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Movie S1. Simulation movie for ρ = 0.6. Oscillating collective motion of active rotors in confinement Peng Liu, Hongwei Zhu, Ying Zeng, Guangle Du, Luhui Ning, Dunyou Wang, Ke Chen, Ying Lu, Ning Zheng, Fangfu Ye, and Mingcheng Yang PNAS. 2020. 117:11901-11907 DOI: 10.1073/pnas.1922633117 Download Original Video Browse All Videos »