Wearable electronics have great potential to enable seamless human–machine interfaces and can dramatically improve the quality of life by using advanced monitoring and therapeutic devices. Despite great progress in wearable devices, very few wearable devices can be both highly integrable and stretchable (strain >100%) due to the lack of reliable connections between the soft conductors and rigid electronics. Here, we report highly stretchable metal-hygroscopic polymer conductors that can secrete solders for connections. Propelled by changing humidity, liquid metal particles within conductors will merge and erupt, providing electrical connections for electronics, while the coated adhesive can provide mechanical connections. Thus, rigid electronics can be stably connected on conductors by pressure, with no extra solder, solvent or heat being required. The stable connections and high stretchability of the conductors (10⁵ S m⁻¹ at a strain of 800%) allow integrated electronics to stretch to a strain of 150%. We have created a stretchable, integrated device that is double-sided and multi-layered and it can sense the oxygen saturation in blood, heart rate, strain and temperature.

中文翻译：

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具有金属吸湿性的聚合物导体，可以分泌用于可伸缩设备中连接的焊料

可穿戴电子设备具有实现无缝人机界面的巨大潜力，并且可以通过使用高级监控和治疗设备显着改善生活质量。尽管可穿戴设备取得了长足进步，但由于软导体和刚性电子设备之间缺乏可靠的连接，因此极少有可穿戴设备具有高集成度和可拉伸性（应变> 100％）。在这里，我们报道了具有高伸缩性的金属-吸湿性聚合物导体，可以分泌用于连接的焊料。受湿度变化的推动，导体中的液态金属颗粒将合并并喷发，从而为电子设备提供电连接，而带涂层的胶粘剂则可以提供机械连接。因此，刚性电子设备可以通过压力稳定地连接在导体上，而无需额外的焊料，需要溶剂或热量。导体的稳定连接和高拉伸性（10⁵ s m ^-1的应变为800％）允许集成电子器件拉伸至150％的应变。我们创建了一种可拉伸的集成设备，该设备是双面的和多层的，可以感知血液中的氧饱和度，心率，劳损和温度。