To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Movie S8. FEM simulation on the thermal-actuated pop-up of multiple square cut units Programmable active kirigami metasheets with more freedom of actuation Yichao Tang, Yanbin Li, Yaoye Hong, Shu Yang, and Jie Yin PNAS. 2019. 116:26407-26413 DOI: 10.1073/pnas.1906435116 Download Original Video Browse All Videos »