Robust, self-adhesive, reinforced polymeric nanofilms enabling gas-permeable dry electrodes for long-term application
Robust, self-adhesive, reinforced polymeric nanofilms enabling gas-permeable dry electrodes for long-term application
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DOI：
10.1073/pnas.2111904118
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发表时间：
2021-09
期刊：
影响因子：
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通讯作者：
Yan Wang;Sunghoon Lee;Haoyang Wang;Zhi Jiang;Y. Jimbo;Chunya Wang;Binghao Wang;Jae Joon Kim-
中科院分区：
文献类型：
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作者：
Yan Wang;Sunghoon Lee;Haoyang Wang;Zhi Jiang;Y. Jimbo;Chunya Wang;Binghao Wang;Jae Joon Kim-
意义我们已经成功地制造了一种高度坚固的，粘性的，透气的独立的聚合物纳米膜，厚度小于100 nm。由纳米膜和Au层组成的透气性干电极可以仅通过货车范德华力粘附到人体皮肤上1周，用于高保真心电图记录。我们的方法克服了在日常生活条件下长时间高精度连续监测生物信号的主要瓶颈，在医学，医疗保健，体育，健身，虚拟现实和娱乐等领域的广泛应用中开辟了新的机会。坚固的聚合物纳米膜可用于构建可直接粘附到软生物组织的透气软电子器件，用于连续、长期的生物信号监测。然而，制造可以自粘附到人体皮肤并保持其功能以用于长期（>1 d）健康监测的透气干电极是具有挑战性的。我们已经成功地开发出一种非常坚固，自粘性，透气性纳米薄膜，厚度仅为95 nm。它具有极高的每单位面积皮肤粘附能，为159 μJ/cm 2。该纳米膜可以通过单独的货车德瓦尔斯力自粘附到人皮肤上，持续1周，而无需任何粘合剂材料或胶带。这种纳米薄膜是超耐用的，它可以支撑比其自身重量重79，000倍的液体，拉伸应力为7.82 MPa。其薄、自组装和坚固性的有利特征使得包括纳米膜和Au层的气体可渗透干电极成为可能，导致连续监测具有高信噪比（34 dB）的心电图信号1周。
Significance We have succeeded in fabricating a highly robust, adhesive, gas-permeable free-standing polymeric nanofilm with a thickness of less than 100 nm. A gas-permeable dry electrode comprising of a nanofilm and an Au layer can adhere to the human skin by van der Waals forces alone for 1 wk for high-fidelity electrocardiogram recording. Our method has overcome the major bottleneck in continuously monitoring biosignals for a long period of time with high precision under daily life conditions, opening up new opportunities in a wide range of applications in fields such as medicine, healthcare, sports, fitness, virtual reality, and entertainment. 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.