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

We proposed an evaluation method and quantitative index for the radial distribution of out-of-plane deformation of kirigami structures with a slit pattern on concentric circles. The concentric kirigami structure is deformed into the out-of-plane direction by pulling the center of the structure, and the out-of-plane deformation distribution in the radial direction can be changed by changing the parameters. In this paper, we expressed the radial distribution of this out-of-plane deformation using a single quantitative index. If the design of the kirigami structure can be freely determined from the quantification index, it can contribute greatly to the realization of useful Micro-Electro-Mechanical Systems (MEMS) devices.