Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta, T6G 1H9, Canada.
Institute for Reconstructive Sciences in Medicine (iRSM), Misericordia Community Hospital, Edmonton, Alberta, T5R 4H5, Canada.
Adv Healthc Mater. 2018 Nov;7(22):e1801033. doi: 10.1002/adhm.201801033. Epub 2018 Oct 19.
Wearable healthcare systems require skin-adhering electrodes that allow maximal comfort for patients as well as an electronics system to enable signal processing and transmittance. Textile-based electronics, known as "e-textiles," is a platform technology that allows comfort for patients. Here, two-layered e-textile patches are designed by controlled permeation of Ag-particle/fluoropolymer composite ink into a porous textile. The permeated ink forms a cladding onto the nanofibers in the textile substrate, which is beneficial for mechanical and electrical properties of the e-textile. The printed e-textile features conductivity of ≈3200 S cm , whereas 1000 cycles of 30% uniaxial stretching causes the resistance to increase only by a factor of ≈5, which is acceptable in many applications. Controlling over the penetration depth enables a two-layer design of the e-textile, where the sensing electrodes and the conducting traces are printed in the opposite sides of the substrate. The formation of vertical interconnected access is remarkably simple as an injection from a syringe. With the custom-developed electronic circuits, a surface electromyography system with wireless data transmission is demonstrated. Furthermore, the dry e-textile patch collects electroencephalography with comparable signal quality to commercial gel electrodes. It is anticipated that the two-layered e-textiles will be effective in healthcare and sports applications.
可穿戴医疗保健系统需要与皮肤贴合的电极，既能让患者感到最大程度的舒适，又能让电子系统实现信号处理和传输。基于纺织品的电子器件，即“电子纺织品”，是一种允许患者感到舒适的平台技术。在这里，通过将 Ag 颗粒/氟聚合物复合油墨受控渗透到多孔纺织品中，设计出了双层电子纺织品贴片。渗透的油墨在纺织基底的纳米纤维上形成覆盖层，这有利于电子纺织品的机械和电气性能。所印刷的电子纺织品的导电率约为 3200 S cm，而在 30%单轴拉伸 1000 次循环后，电阻仅增加约 5 倍，这在许多应用中是可以接受的。通过控制渗透深度，可以实现电子纺织品的双层设计，其中传感电极和导电迹线印刷在基底的相对两侧。通过注射器注射，可以非常简单地形成垂直互连通道。使用定制开发的电子电路，演示了具有无线数据传输功能的表面肌电图系统。此外，干燥的电子纺织品贴片可以收集脑电图，其信号质量可与商业凝胶电极相媲美。预计双层电子纺织品将在医疗保健和运动应用中发挥重要作用。
