Evaluation Method of Out-of-Plane Deformation on Kirigami Structure with Repetitive Slit Patterns on Concentric Circles

In this study, we devised an evaluation method and a quantitative index for the radial distribution of the out-of-plane deformation of kirigami structures with a slit pattern on concentric circles. The concentric kirigami structure was deformed in the out-of-plane direction by pulling the center of the structure, and the out-of-plane deformation distribution in the radial direction was changed by changing the distance between the slits in the radial direction of the circle and the length on the circumference of the circle. We used a single quantitative index to express the radial distribution of out-of-plane deformation. If the design of the kirigami structure can be freely determined from the quantification index, it can significantly contribute to the realization of useful devices which uses the concentric kirigami structure. © 2024 Institute of Electrical Engineers of Japan and Wiley Periodicals LLC.