To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Movie S2. View of the 2D cellular metamaterial prototype as it is compressed vertically. Along with each raw image, a reconstructed image with beams colored by their tortuosity (Fig. 5) is also shown. Selective buckling via states of self-stress in topological metamaterials Jayson Paulose, Anne S. Meeussen, and Vincenzo Vitelli PNAS. 2015. 112:7639-7644 DOI: 10.1073/pnas.1502939112 Download Original Video Browse All Videos »