Huebsch, N.Kearney, Cathal JohnZhao, X.Kim, J.Cezar, Christine AnneSuo, ZhigangMooney, David2015-02-032014Huebsch, N., C. J. Kearney, X. Zhao, J. Kim, C. A. Cezar, Z. Suo, and D. J. Mooney. 2014. “Ultrasound-Triggered Disruption and Self-Healing of Reversibly Cross-Linked Hydrogels for Drug Delivery and Enhanced Chemotherapy.” Proceedings of the National Academy of Sciences 111 (27) (June 24): 9762–9767. doi:10.1073/pnas.1405469111.2041-1723http://nrs.harvard.edu/urn-3:HUL.InstRepos:13909853Foldable photoelectronics and muscle-like transducers require highly stretchable and transparent electrical conductors. Some conducting oxides are transparent, but not stretchable. Carbon nanotube films, graphene sheets and metal-nanowire meshes can be both stretchable and transparent, but their electrical resistances increase steeply with strain <100%. Here we present highly stretchable and transparent Au nanomesh electrodes on elastomers made by grain boundary lithography. The change in sheet resistance of Au nanomeshes is modest with a one-time strain of ~160% (from ~21 Ω per square to ~67 Ω per square), or after 1,000 cycles at a strain of 50%. The good stretchability lies in two aspects: the stretched nanomesh undergoes instability and deflects out-of-plane, while the substrate stabilizes the rupture of Au wires, forming distributed slits. Larger ratio of mesh-size to wire-width also leads to better stretchability. The highly stretchable and transparent Au nanomesh electrodes are promising for applications in foldable photoelectronics and muscle-like transducers.en-USself-healing materialsalginateon-demand deliverysonophoresisJournal Article2015-01-25Chuan Fei Guo, Tianyi Sun, Qihan Liu, Zhigang Suo, and Zhifeng Ren2015-02-0310.1038/ncomms4121