Abstract This work reports kirigami-inspired architectures of graphene for strain-insensitive, surface-conformal stretchable multifunctional electrodes and sensors. The kirigami-inspired graphene electrode exhibits strain-insensitive electrical properties up to 240% applied tensile strain and mixed strain states, including a combination of stretching, twisting, and/or shearing. Moreover, a multitude of kirigami designs of graphene are explored computationally to predict deformation morphologies under different strain conditions and to achieve controllable stretchability. Notably, strain-insensitive graphene field-effect transistor and photodetection under 130% stretching and 360° torsion are achieved by strategically redistributing stress concentrations away from the active sensing elements via strain-responsive out-of-plane buckling at the vicinity of the kirigami notches. The combination of ultra-thin form factor, conformity on skin, and breathable notches suggests the applicability of kirigami-inspired platform based on atomically-thin materials in a broader set of wearable technology.

中文翻译：

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基于原子级薄材料的 Kirigami 启发的应变不敏感传感器

摘要 这项工作报告了石墨烯的 kirigami 结构，用于应变不敏感、表面共形可拉伸多功能电极和传感器。kirigami 启发的石墨烯电极在高达 240% 的外加拉伸应变和混合应变状态下表现出应变不敏感的电特性，包括拉伸、扭曲和/或剪切的组合。此外，通过计算探索了石墨烯的多种剪纸设计，以预测不同应变条件下的变形形态并实现可控的拉伸性。尤其，应变不敏感石墨烯场效应晶体管和 130% 拉伸和 360° 扭转下的光电检测是通过在 kirigami 凹口附近通过应变响应平面外屈曲策略性地重新分布应力集中远离有源传感元件来实现的。超薄外形、贴合皮肤和透气缺口的组合表明基于原子薄材料的剪纸灵感平台在更广泛的可穿戴技术中的适用性。