Liquid metal represents a highly conductive and inherently deformable conductor for the development of stretchable electronics. The widespread implementations of liquid metal towards functional sensors and circuits are currently hindered by the lack of a facile and scalable patterning approach. In this study, we report a fully solution-based process to generate patterned features of the liquid metal conductor. The entire process is carried out under ambient conditions and is generally compatible with various elastomeric substrates. The as-prepared liquid metal feature exhibits high resolution (100 μm), excellent electrical conductivity (4.15 × 10⁴S cm⁻¹), ultrahigh stretchability (1000% tensile strain), and mechanical durability. The practical suitability is demonstrated by the heterogeneous integration of light-emitting diode (LED) chips with liquid metal interconnects for a stretchable and wearable LED array. The solution-based technique reported here is the enabler for the facile patterning of liquid metal features at low cost, which may find a broad range of applications in emerging fields of epidermal sensors, wearable heaters, advanced prosthetics, and soft robotics.

液态金属代表了一种用于开发可拉伸电子产品的高导电性和固有可变形导体。由于缺乏简便且可扩展的图案化方法，液态金属在功能传感器和电路中的广泛应用目前受到阻碍。在这项研究中，我们报告了一种完全基于溶液的过程来生成液态金属导体的图案特征。整个过程在环境条件下进行，通常与各种弹性基材兼容。所制备的液态金属特征具有高分辨率（100 μm）、优异的导电性（4.15 × 10 ⁴ S cm ^-1)、超高拉伸性（1000% 拉伸应变）和机械耐久性。将发光二极管 (LED) 芯片与液态金属互连用于可拉伸和可穿戴 LED 阵列的异质集成证明了实际适用性。此处报道的基于解决方案的技术是以低成本轻松实现液态金属特征图案化的推动因素，该技术可能会在表皮传感器、可穿戴加热器、先进假肢和软机器人等新兴领域中找到广泛的应用。