Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, China.
Department of Oncological Radiotherary, Central Theater Command General Hospital of the Chinese People's Liberation Army, Wuhan 430070, China.
ACS Appl Mater Interfaces. 2020 May 27;12(21):23689-23696. doi: 10.1021/acsami.0c04134. Epub 2020 May 14.
Long-term, real-time, and comfortable epidermal electronics are of great practical importance for healthcare monitoring and human-machine interaction. However, traditional physiological signal monitoring confined by the specific clinical sites and unreliability of the epidermal electrodes leads to great restrictions on its application. Herein, we constructed a solution-processed submicron (down to 230 nm), free-standing, breathable sandwich-structured hybrid electrode composed of a silver nanowire network with a conductive polymer film, which is conformal, water-permeable, and noninvasive to the skin while achieving good signal acquisition ability. The free-standing hybrid electrode is prepared an capillary force lift-off process and can be transferred onto complex surfaces. The whole process is a complete solution process that facilitates large-area preparation and application. The light-weight hybrid electrodes exhibit high optical transmittance, high electrical conductivity, and high gas/ion permeability. When the hybrid electrodes are attached onto the skin, the imperceptible films show high conformality with low electrical impedance, thus exhibiting significantly improved electrocardiology and electromyogram signal monitoring performance compared to that of the commercial gel electrodes.
长期、实时、舒适的表皮电子设备对于医疗保健监测和人机交互具有重要的实际意义。然而，传统的生理信号监测受到特定临床部位的限制和表皮电极的不可靠性，这对其应用有很大的限制。在此，我们构建了一种由银纳米线网络和导电聚合物薄膜组成的溶液处理的亚微米（低至 230nm）、独立式、透气的三明治结构混合电极，具有良好的信号采集能力，同时具有贴合性、透水性和对皮肤的非侵入性。独立式混合电极采用毛细力剥离工艺制备，可转移到复杂表面。整个过程是一个完整的溶液处理过程，便于大面积制备和应用。这种混合电极重量轻，具有高透光率、高导电性和高气体/离子透过性。当混合电极贴在皮肤上时，几乎不可见的薄膜与皮肤具有低阻抗的高度贴合性，从而与商业凝胶电极相比，显著提高了心电图和肌电图信号监测性能。
