WEB Programmable kirigami balloonsTuesday (22.09.2020) 17:20 - 17:50 F: Functional Materials, Surfaces, and Devices 2 Part of:
Kirigami, the Japanese art of paper cutting, has recently enabled the design of stretchable mechanical metamaterials that can be easily realized by embedding arrays of periodic cuts into an elastic sheet. Here, by embedding a thin kirigami shell into a soft silicon rubber, we design a programmable and inflatable kirigami structure that can deform into a desired shape or trajectory at a given pressure. First, we show that the inflated shape can be controlled by tuning the geometric parameters of the kirigami pattern. Then, by applying a simple optimization algorithm, we identify the best parameters that enable the kirigami inflatables to transform into a family of target shapes at a given pressure. Furthermore, thanks to the tessellated nature of the kirigami, we show that we can selectively manipulate the parameters of the single units to allow the reproduction of features at different scales and ultimately enable a more accurate mimicking of the target.
K.B. acknowledges support from the National Science Foundation National Science Foundation under Grants No. DMR-1420570 and DMR-1922321. A.E.F. acknowledges that this project has received funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement No. 798244. A.R. acknowledges support from Swiss National Science Foundation through Grant P3P3P2-174326.