材料科学
佩多:嘘
电极
电阻抗
电容
导电聚合物
电导率
光电子学
纳米技术
电生理学
聚合物
复合材料
电气工程
化学
工程类
医学
物理化学
内科学
作者
Tie Yuan,NULL AUTHOR_ID,NULL AUTHOR_ID,Weizhen Li,NULL AUTHOR_ID,Ruhe Yang,Yixuan Wang,Xiaotian Hu
出处
期刊:Small
[Wiley]
日期:2024-07-07
标识
DOI:10.1002/smll.202404432
摘要
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.
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