Liquid metal (LM) has shown potential values in different areas. Attempts to implement LM are tending to develop new functions and make it versatile to improve its performance for practical applications. Here, we present an unprecedented LM-integrated ultra-elastic microfiber with distinctive features for wearable electronics. The microfiber with a polyurethane shell and an LM core was continuously generated by using a sequenced microfluidic spinning and injection method. Due to the precise fluid manipulation of microfluidics, the resultant microfiber could be tailored with tunable morphologies and responsive conductivities. We have demonstrated that the microfiber could act as dynamic force sensor and motion indicator when it was embedded into elastic films. In addition, the values of the LM-integrated ultra-elastic microfiber on energy conversions such as electro-magnetic or electro-thermal conversions have also been realized. These features indicate that LM-integrated microfiber will open up new frontiers in LM-integrated materials and the wearable electronics field.

液态金属 (LM) 在不同领域显示出潜在价值。实施 LM 的尝试倾向于开发新功能并使其通用以提高其在实际应用中的性能。在这里，我们展示了一种前所未有的 LM 集成超弹性微纤维，具有可穿戴电子产品的独特功能。具有聚氨酯壳和 LM 芯的微纤维是通过使用顺序微流体纺丝和注射方法连续生成的。由于微流体的精确流体操纵，由此产生的微纤维可以定制具有可调的形态和响应电导率。我们已经证明，当微纤维嵌入弹性薄膜中时，它可以充当动态力传感器和运动指示器。此外，LM集成的超弹性微纤维在电磁或电热转换等能量转换方面的价值也得到了实现。这些特性表明，LM 集成超细纤维将开辟 LM 集成材料和可穿戴电子领域的新领域。