PDF(Pubmed)
Abstract：
Wearable electronic sensors have recently attracted tremendous attention in applications such as personal health monitoring, human movement detection, and sensory skins as they offer a promising alternative to counterparts made from traditional metallic conductors and bulky metallic conductors. However, the real-world use of most wearable sensors is often hindered by their limited stretchability and sensitivity, and ultimately, their difficulty to integrate into textiles. To overcome these limitations, wearable sensors can incorporate flexible conductive fibers as electrically active components. In this study, we adopt a scalable wet-spinning approach to directly produce flexible and conductive fibers from aqueous mixtures of Ti3C2Tx MXene and natural rubber (NR). The electrical conductivity and stretchability of these fibers were tuned by varying their MXene loading, enabling knittability into textiles for wearable sensors. As individual filaments, these MXene/NR fibers exhibit suitable conductivity dependence on strain variations, making them ideal for motivating sensors. Meanwhile, textiles from knitted MXene/NR fibers demonstrate great stability as capacitive touch sensors. Collectively, we believe that these elastic and conductive MXene/NR-based fibers and textiles are promising candidates for wearable sensors and smart textiles.
摘要：
可穿戴电子传感器最近在个人健康监测等应用中引起了极大的关注，人体运动检测，和感官皮肤，因为它们为传统金属导体和笨重的金属导体制成的对应物提供了有希望的替代品。然而,大多数可穿戴传感器的实际使用通常因其有限的可拉伸性和灵敏度而受到阻碍，最终,他们很难融入纺织品。为了克服这些限制,可穿戴传感器可以结合柔性导电纤维作为电活性部件。在这项研究中,我们采用可扩展的湿法纺丝方法，从Ti3C2TxMXene和天然橡胶（NR）的水性混合物直接生产柔性和导电纤维。这些纤维的导电性和拉伸性通过改变它们的MXene负载来调节,为可穿戴传感器提供纺织品的可针织性。作为单独的细丝，这些MXene/NR纤维对应变变化表现出合适的电导率依赖性，使它们成为激励传感器的理想选择。同时,由针织MXene/NR纤维制成的纺织品作为电容式触摸传感器表现出极大的稳定性。总的来说，我们认为这些弹性和导电的MXene/NR基纤维和纺织品是可穿戴传感器和智能纺织品的有希望的候选产品。
