As an indispensable basic component of wearable devices, the composite elastic conductor is widely used for elastic electrode and elastic wire. The ideal elastic conductor is expected to have high conductivity and stretchability, and maintain the resistance constant during stretching. However, it's difficult for the current composite elastic conductors filling solid conductive materials. Here, a composite elastic conductor filling liquid‐metal alloy is reported. Highly conductive and freely deformable liquid‐metal filler achieves the elastic conductor with excellent conductivity and stretchability (electrical conductivity of 1.34 × 10³ S cm⁻¹, sheet resistance of 17.59 mΩ □⁻¹, and breaking elongation of 116.86%). Importantly, the filler forms novel three‐dimensional Calabash Bunch conductive network structure in elastic matrix, which enables the elastic conductor to have excellent dynamic stability during stretching. The relative resistance variation is only 4.305% at 116.86% strain. This variation is 2–5 orders of magnitude smaller than that of the reported composite elastic conductor at the same strain, which is important for wearable devices to remain performances fairly unchanged undergo large deformation. Finally, it served as elastic electrodes of a stretchable capacitive strain sensor and elastic wires of a stretchable earphone respectively to demonstrate its potential in wearable devices.

中文翻译：

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基于3D-卡拉布奇导电网络结构的可穿戴设备高动态稳定性复合弹性导体

作为可穿戴设备必不可少的基本组成部分，复合弹性导体被广泛用于弹性电极和弹性线材。期望理想的弹性导体具有高导电性和可拉伸性，并且在拉伸期间保持电阻恒定。但是，当前的复合弹性导体难以填充固体导电材料。此处报道了一种填充液体金属合金的复合弹性导体。高导电性和可自由变形的液态金属填料可实现具有优异导电性和可拉伸性的弹性导体（电导率为1.34×10 ³ S cm ^-1，薄层电阻为17.59mΩ□ ^-1，断裂伸长率为116.86％）。重要的是，填料在弹性基质中形成了新颖的三维葫芦束导电网络结构，使弹性导体在拉伸过程中具有出色的动态稳定性。在116.86％应变下，相对电阻变化仅为4.305％。这种变化比报道的相同应变下的复合弹性导体的变化小2-5个数量级，这对于可穿戴设备保持相当大的性能经受大变形是很重要的。最后，它分别用作可伸缩电容应变传感器的弹性电极和可伸缩耳机的弹性线，以展示其在可穿戴设备中的潜力。