范德瓦尔斯力
电极
材料科学
干气
胶粘剂
复合材料
纳米技术
粘附
聚合物
图层(电子)
分子
化学
色谱法
物理化学
有机化学
作者
Yan Wang,Sunghoon Lee,Haoyang Wang,Zhihao Jiang,Yasuhiro Jimbo,Chunya Wang,Binghao Wang,Jae Joon Kim,Mari Koizumi,Tomoyuki Yokota
标识
DOI:10.1073/pnas.2111904118
摘要
Robust polymeric nanofilms can be used to construct gas-permeable soft electronics that can directly adhere to soft biological tissue for continuous, long-term biosignal monitoring. However, it is challenging to fabricate gas-permeable dry electrodes that can self-adhere to the human skin and retain their functionality for long-term (>1 d) health monitoring. We have succeeded in developing an extraordinarily robust, self-adhesive, gas-permeable nanofilm with a thickness of only 95 nm. It exhibits an extremely high skin adhesion energy per unit area of 159 μJ/cm2 The nanofilm can self-adhere to the human skin by van der Waals forces alone, for 1 wk, without any adhesive materials or tapes. The nanofilm is ultradurable, and it can support liquids that are 79,000 times heavier than its own weight with a tensile stress of 7.82 MPa. The advantageous features of its thinness, self-adhesiveness, and robustness enable a gas-permeable dry electrode comprising of a nanofilm and an Au layer, resulting in a continuous monitoring of electrocardiogram signals with a high signal-to-noise ratio (34 dB) for 1 wk.
科研通智能强力驱动
Strongly Powered by AbleSci AI