To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Movie S3. Left panel: Experimentally measured velocity fields. Right panel: Instantaneous velocity fields reconstructed from experimental orientation fields using Eqs. 1-2 at optimal parameters. Data-driven quantitative modeling of bacterial active nematics He Li, Xia-qing Shi, Mingji Huang, Xiao Chen, Minfeng Xiao, Chenli Liu, Hugues Chaté, and H. P. Zhang PNAS. 2018. 116:777-785 DOI: 10.1073/pnas.1812570116 Download Original Video Browse All Videos »