Abstract：
Long-term epidermal recording of bioelectricity is of paramount importance for personal health monitoring. It requires stretchable and dry film electrodes that can be seamlessly integrated with skin. The simultaneous achievement of high conductivity and skin-like ductility of conducting materials is a prerequisite for reliable signal transduction at the dynamic interface, which is also the bottleneck of epidermal electrophysiology. Here, carbon nanotubes (CNTs) are introduced as \"conjugation linkers\" into a topologically plasticized conducting polymer (PEDOT:PSS). A thin-film electrode with high conductivity (≈3250 S cm-1) and high stretchability (crack-onset strain>100%) is obtained. In particular, the conjugation linker enables the high volumetric capacitance and the low film resistance, both of which synergically reduce the interfacial impedance. The capabilities of this electrode is further demonstrated in the precise recording of various electrophysiological signals.
摘要：
生物电的长期表皮记录对于个人健康监测至关重要。它需要可拉伸和干膜电极，可以与皮肤无缝集成。同时实现导电材料的高导电性和皮肤状延展性是在动态界面上可靠的信号转导的先决条件，这也是表皮电生理学的瓶颈。这里,碳纳米管（CNT）作为“共轭接头”引入拓扑增塑导电聚合物（PEDOT：PSS）。获得了具有高电导率（≈3250Scm-1）和高拉伸性（裂纹开始应变>100％）的薄膜电极。特别是,共轭接头能够实现高体积电容和低薄膜电阻，两者协同降低界面阻抗。在各种电生理信号的精确记录中进一步证明了该电极的能力。
