材料科学
自愈水凝胶
生物电子学
互连
导电体
电子线路
纳米技术
柔性电子器件
数码产品
制作
电子元件
光电子学
计算机科学
电气工程
复合材料
生物传感器
工程类
电信
病理
高分子化学
医学
替代医学
作者
Caicai Jiao,Liangtao Li,Baoyang Lu,Qian Wang,Weili Hong,Xing Chen,Lingqian Chang,Xinpeng Wang,Yang Wang,Kang Sun,Liang Hu,Yubo Fan
标识
DOI:10.1016/j.cej.2024.148951
摘要
Soft printed circuits is a vital component in electronic devices, which is designed to connect electrical components to exert certain functions. However, the design and fabrication of soft printed circuits still suffer from significant limitations including interconnection difficulties among varying materials with different stiffness, intrinsically low conductivity of typical soft materials like hydrogels, and the multi-material assembly and integration issues involved in the wiring and encapsulation process. Here we report a novel design paradigm of a soft printed circuit termed as liquid metal (LM)-hydrogel hybrid printed circuit (LMH-HPC), in which highly conductive LM functions as electrical wires while hydrogel can simultaneously work as the electrical junction, encapsulation, and bio-interfacing. The whole LMH-HPC maintains completely mechanically adapted (∼1–30 kPa) to soft tissues. Based on this LMH-HPC, we design soft hybrid circuits with movable but stable electrical connections with conventional solid electrical components. Owing to the giant electrical conductivity difference between LM and hydrogel, the current through the hydrogel can be tuned with density distribution at the hydrogel junction, which can be further utilized as the soft and safe bioelectronic interfaces for applications such as soft electrical stimulators for excitable cells and tissues, and iontophoresis-assisted wound dressing for antibacterial therapy. Overall, this LMH-HPC may set up a multifunctional platform for the design of hydrogel electronic devices.
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