Bidirectional Spiral-Inspired Kirigami Mechanical Metamaterial for Stretchable Electronics

• DOI: 10.1021/acsami.5c01083
• Publication Date: 2025-05-15T07:59:16Z
• Authors: Sijia Yan; Yue Hou; Zheng Zhu; Chang Li; Qianfeng Ding; Xiaolong Sun; Zhanglong Xia; Wei Cao; Ziyu Wang
• Keywords: Stretchable electronics

The rapid advancement of flexible electronics and wearable sensors has heightened demands for stretchable structures that excel in conformability, dynamic motion adaptability, stability under cyclic stretches, antidistortion properties, holding significant commercial value. Traditional designs have often compromised the fill factor to achieve in-plane stretchability by incorporating electrodes with or prestrained architectures. In this article, we introduce a novel bidirectional spiral-hinge kirigami mechanical metamaterial (BSHK-MM) design remarkable 77.3%. This significantly enhances both (80%) out-of-plane (12496%) directions, providing exceptional resistance distortion. stress-strain curve BSHK-MM structure was analyzed through simulation, proving potential further manipulation. To demonstrate design, fabricated 5 × inorganic light-emitting diode (LED) display based on concept. device functions effectively 80% stretching can endure 10000 stretches while returning its original state negligible variation. Furthermore, it demonstrates distortion substantial stretching. LED exemplifies broad applicability our concept various types electronics, highlighting vast across wide range applications.