To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Movie S3. FEM simulation on the thermal-actuated polarization switch of single hexagonal cut unit 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 »