Liquid Metal-Based Electronics for On-Skin Healthcare

作者：Jinwei Cao, Xin Li, Yiwei Liu, Guang Zhu, Run‐Wei Li · 发表于：Biosensors · 年份：2023 · DOI：10.3390/bios13010084 · 被引用次数：36 · 研究领域：Advanced Sensor and Energy Harvesting Materials、Nanomaterials and Printing Technologies、Tactile and Sensory Interactions

' requirement, i.e., biocompatibility, electrical elasticity, and robustness, is first proposed here for all the on-skin healthcare electronics for epidermal applications. This requirement would guide the designing of the next-generation on-skin healthcare electronics. For conventional stretchable electronics, the rigid conductive materials, e.g., gold nanoparticles and silver nanofibers, would suffer from an easy-to-fail interface with elastic substrates due to a Young's modulus mismatch. Liquid metal (LM) with high conductivity and stretchability has emerged as a promising solution for robust stretchable epidermal electronics. In addition, the fundamental physical, chemical, and biocompatible properties of LM are illustrated. Furthermore, the fabrication strategies of LM are outlined for pure LM, LM composites, and LM circuits based on the surface tension control. Five dominant epidermal healthcare applications of LM are illustrated, including electrodes, interconnectors, mechanical sensors, thermal management, and biomedical and sustainable applications. Finally, the key challenges and perspectives of LM are identified for the future research vision.