Stretchable conductive fibers (SCFs) are emerging materials that combine the advantages of both fibers and stretchable electronics, with broad applications in various electronic devices. Owing to their excellent stretchability, compliance, conductivity, and integratability, SCFs have drawn considerable attention from both academia and industry. Despite the emerging research enthusiasm in this field, the intrinsic correlation between the design and application of SCFs has not been explicitly stated, which severely hinders their further development. In this review, we establish an internal connection between the design and application for the first time by elaborately analyzing the key properties of the SCFs, aiming to provide comprehensive guidance for the application-oriented design. First, the design of structures, conductive materials, and preparation methods, which determine the mechanical and electrical properties of the SCFs, is summarized in detail. Then, the key properties of SCFs as well as their relationship with design and applications are analyzed. Next, several representative applications of SCFs that possess high dependency on the key properties are described. Finally, a brief discussion is presented on the current challenges and the vision for future development directions of SCFs. We believe this review will broadly benefit scientists, engineers, and postgraduates in the areas of functional fibrous materials research.

中文翻译：

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可拉伸导电纤维：设计、性能和应用

可拉伸导电纤维（SCF）是一种新兴材料，结合了纤维和可拉伸电子产品的优点，在各种电子设备中具有广泛的应用。由于其优异的拉伸性、柔顺性、导电性和可集成性，SCF 引起了学术界和工业界的广泛关注。尽管该领域的研究热情不断涌现，但 SCF 的设计和应用之间的内在关联尚未明确阐明，这严重阻碍了其进一步发展。在这篇综述中，我们通过详细分析SCF的关键特性，首次在设计和应用之间建立了内在联系，旨在为面向应用的设计提供全面的指导。首先，详细总结了决定SCF机械和电性能的结构设计、导电材料和制备方法。然后，分析了 SCF 的关键特性及其与设计和应用的关系。接下来，描述了对关键属性具有高度依赖性的 SCF 的几个代表性应用。最后，对SCF当前面临的挑战和未来发展方向进行了简要讨论。我们相信这篇综述将使功能纤维材料研究领域的科学家、工程师和研究生广泛受益。