Enhanced Wearability and Performance in Laser-Induced Graphene Sensors Through Bio-Inspired Interfacial Cross-Linking

Skin-like sensors offer a promising alternative to the bulky and rigid devices currently on the market. However, overcoming the mechanical mismatch between skin-like materials and traditional electronic components presents significant challenges. Poor interfacial affinity between stretchable substrates and rigid components leads to stress concentration, often resulting in delamination and cracking of the electronic architecture. To address this issue, we developed a Laser-Induced Graphene (LIG)-based triboelectric sensor through interfacial, bio-inspired cross-linking. This sensor exhibits skin-like breathability, mechanical properties, and self-healability with minimal changes in conductivity after tearing and healing. Featuring self-adhesive properties, the LIG skin-like sensor eliminates the need for extrinsic attachment methods, facilitating seamless and high-fidelity cardiovascular monitoring. By integrating high-performance materials with design-for-wearability principles, this sensor represents a significant leap toward next-generation skin-like sensors.