College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, China.
National Engineering Laboratory for Modern Silk, Suzhou 215123, China.
ACS Appl Mater Interfaces. 2024 Oct 23;16(42):57860-57869. doi: 10.1021/acsami.4c12819. Epub 2024 Oct 10.
The quality of the electrocardiography (ECG) signals depends on the effectiveness of the electrode-skin connection. However, current electrocardiogram electrodes (ECGE) often face challenges such as high contact impedance and unstable conductive networks, which hinder accurate measurement during movement and long-term wearability. Herein, in this work, a bionic 3D pile textile as an ECGE with high electrical conductivity and flexibility is prepared by a facile, continuous, and high-efficiency electrostatic self-assembly process. Integrating pile textiles with conductive materials creates a full textile electrode for bioelectrical signal detection that can retain both the inherent characteristics of textiles and high conductivity. Moreover, the dense piles on the textile surface make full contact with the skin, mitigating motion artifacts caused by the sliding between the textile and the skin. The continuous conductive network formed by the interconnected piles allows the pile textile ECGE (PT-ECGE) to function effectively under both static and dynamic conditions. Leveraging the unique pile structure, the PT-ECGE achieves superior flexibility, improved conductivity, low contact impedance, and high adaptivity, washability, and durability. The textile electrode, as a promising candidate for wearable devices, offers enormous application possibilities for the unconscious and comfortable detection of physiological signals.
心电图（ECG）信号的质量取决于电极与皮肤的连接效果。然而，目前的心电图电极（ECGE）经常面临诸如高接触阻抗和不稳定的导电网络等挑战，这阻碍了运动期间和长期佩戴时的准确测量。在此，在这项工作中，通过简便、连续和高效的静电自组装工艺，制备了一种具有高导电性和柔韧性的仿生 3D 桩纺织品作为 ECGE。将桩纺织品与导电材料集成在一起，为生物电信号检测创建了一个全纺织电极，它可以保留纺织品的固有特性和高导电性。此外，纺织品表面密集的桩与皮肤完全接触，减轻了纺织品与皮肤之间滑动引起的运动伪影。由相互连接的桩形成的连续导电网络使桩纺织品 ECG（PT-ECGE）在静态和动态条件下都能有效工作。利用独特的桩结构，PT-ECGE 实现了卓越的柔韧性、改善的导电性、低接触阻抗以及高适应性、可清洗性和耐用性。作为可穿戴设备的有前途的候选者，这种纺织电极为无意识和舒适的生理信号检测提供了巨大的应用可能性。
