To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Movie S7. For a peeling sample of the middle layer of A:B = 15:1, the sample peels through the middle layer, the peeling toughness is almost the same as the bulk toughness (over 300 J/m2), and the middle layer leaves residuals on both peeled arms. Stretchable materials of high toughness and low hysteresis Zhengjin Wang, Chunping Xiang, Xi Yao, Paul Le Floch, Julien Mendez, and Zhigang Suo PNAS. 2019. 116:5967-5972 DOI: 10.1073/pnas.1821420116 Download Original Video Browse All Videos »