Geometrical Engineering for Implementing Stretchable Electronics

Recently, soft and stretchable electronics integrated with various functional devices are attracting attention as they can be used for stretchable display, stretchable battery, and electronic skin (e-skin). It is essential to impart stretchability to the electrical components (e.g., electrodes and devices). However, conventional materials used in electronics have low stretchability, which hinders the development of stretchable electronics. To solve this problem, various strategies for geometrical engineering that enhance stretchability to rigid materials have been reported. In this paper, geometrical engineering such as serpentine, kirigami, and island structures are discussed, focusing on the progress of recent developments and future prospects.