Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Beijing Normal University, Beijing, 100875, P. R. China.
State Key Laboratory of Fine Chemicals, Panjin Branch of School of Chemical Engineering, Dalian University of Technology, Panjin, Liaoning, 124221, P. R. China.
Adv Sci (Weinh). 2024 Oct;11(40):e2406706. doi: 10.1002/advs.202406706. Epub 2024 Aug 29.
Electronic tattoo, capable of imperceivably acquiring bio-electrical signals from the body, is broadly applied in healthcare and human-machine interface. Tattoo substrate, the foundation of electronic tattoo, is expected to be mechanically mimetic to skin, adhesive, and breathable, and yet remains highly challenging to achieve. Herein, the study mimics human skin and design a breathable, adhesive, and mechanically skin-like super tattoo substrate based on an ultra-thin film (≈2 µm). Similar to skin, super tattoo demonstrates strain-adaptive stiffening properties with high tear energy (5.4 kJ·m) and toughness (1.3 MJ·m). Superior to skin, it exhibits high adhesion, ionic conductivity, and permeability. A variety of conductive electrodes can be processed on it, showing the universality toward an ideal platform for electronic tattoo with stable and low contact impedance. Super tattoo-based electrodes can imperceivably and accurately monitor weak electromyography (EMG) of swallowing on the junction, providing effective guidance for rehabilitation training of dysphagia.
电子纹身，能够从人体上不可察觉地获取生物电信号，在医疗保健和人机界面中得到了广泛的应用。电子纹身的基底材料，期望在机械性能上模仿皮肤，具有粘性、透气性，然而这仍然极具挑战性。在此，该研究模拟了人类皮肤，并设计了一种基于超薄薄膜（≈2 µm）的透气、粘性和机械仿生超级纹身基底材料。与皮肤类似，超级纹身具有应变自适应增强特性，具有高撕裂能（5.4 kJ·m）和韧性（1.3 MJ·m）。优于皮肤的是，它具有高附着力、离子电导率和通透性。各种导电电极可以在其表面进行处理，显示出作为电子纹身理想平台的通用性，具有稳定的低接触阻抗。基于超级纹身的电极可以不可察觉地、准确地监测吞咽时的微弱肌电图（EMG），为吞咽障碍的康复训练提供有效的指导。
