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Healable, Degradable, and Conductive MXene Nanocomposite Hydrogel for Multifunctional Epidermal Sensors
ACS Nano ( IF 15.8 ) Pub Date : 2021-03-26 , DOI: 10.1021/acsnano.1c01751 Xiaobin Li 1 , Lingzhang He 1 , Yanfei Li 2 , Mingyuan Chao 1 , Mingkun Li 1 , Pengbo Wan 1 , Liqun Zhang 1
ACS Nano ( IF 15.8 ) Pub Date : 2021-03-26 , DOI: 10.1021/acsnano.1c01751 Xiaobin Li 1 , Lingzhang He 1 , Yanfei Li 2 , Mingyuan Chao 1 , Mingkun Li 1 , Pengbo Wan 1 , Liqun Zhang 1
Affiliation
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Conductive hydrogels have emerged as promising material candidates for epidermal sensors due to their similarity to biological tissues, good wearability, and high accuracy of information acquisition. However, it is difficult to simultaneously achieve conductive hydrogel-based epidermal sensors with reliable healability for long-term usage, robust mechanical property, environmental degradability for decreased electronic waste, and sensing capability of the physiological stimuli and the electrophysiological signals. Herein, we propose the synthesis strategy of a multifunctional epidermal sensor based on the highly stretchable, self-healing, degradable, and biocompatible nanocomposite hydrogel, which is fabricated from the conformal coating of a MXene (Ti3C2Tx) network by the hydrogel polymer networks involving poly(acrylic acid) and amorphous calcium carbonate. The epidermal sensor can be employed to sensitively detect human motions with the fast response time (20 ms) and to serve as electronic skins for wirelessly monitoring the electrophysiological signals (such as the electromyogram and electrocardiogram signals). Meanwhile, the multifunctional epidermal sensor could be degraded in phosphate buffered saline solution, which could not cause any pollution to the environment. This line of research work sheds light on the fabrication of the healable, degradable, and electrophysiological signal-sensitive conductive hydrogel-based epidermal sensors with potential applications in human–machine interactions, healthy diagnosis, and smart robot prosthesis devices.
中文翻译：
用于多功能表皮传感器的可修复，可降解和导电的MXene纳米复合水凝胶
导电水凝胶由于其与生物组织的相似性，良好的耐磨性和信息获取的高精度而成为表皮传感器的有前途的候选材料。然而，难以同时获得具有导电性的基于水凝胶的表皮传感器，其对于长期使用具有可靠的修复性，强大的机械性能，对于减少的电子废物具有环境可降解性以及生理刺激和电生理信号的感测能力。本文中，我们提出了一种基于高度可拉伸，自修复，可降解且生物相容的纳米复合水凝胶的多功能表皮传感器的合成策略，该复合水凝胶由MXene（Ti 3 C 2 T x）网络由包含聚丙烯酸和无定形碳酸钙的水凝胶聚合物网络组成。表皮传感器可用于以快速响应时间（20毫秒）灵敏地检测人的动作，并用作电子皮肤，以无线方式监视电生理信号（例如肌电图和心电图信号）。同时，多功能表皮传感器可在磷酸盐缓冲盐溶液中降解，不会对环境造成任何污染。这一系列的研究工作揭示了可修复，可降解和电生理信号敏感的导电水凝胶表皮传感器的制造，这些传感器在人机交互，健康诊断和智能机器人假体设备中具有潜在的应用前景。
更新日期：2021-04-28
中文翻译：
用于多功能表皮传感器的可修复，可降解和导电的MXene纳米复合水凝胶
导电水凝胶由于其与生物组织的相似性，良好的耐磨性和信息获取的高精度而成为表皮传感器的有前途的候选材料。然而，难以同时获得具有导电性的基于水凝胶的表皮传感器，其对于长期使用具有可靠的修复性，强大的机械性能，对于减少的电子废物具有环境可降解性以及生理刺激和电生理信号的感测能力。本文中，我们提出了一种基于高度可拉伸，自修复，可降解且生物相容的纳米复合水凝胶的多功能表皮传感器的合成策略，该复合水凝胶由MXene（Ti 3 C 2 T x）网络由包含聚丙烯酸和无定形碳酸钙的水凝胶聚合物网络组成。表皮传感器可用于以快速响应时间（20毫秒）灵敏地检测人的动作，并用作电子皮肤，以无线方式监视电生理信号（例如肌电图和心电图信号）。同时，多功能表皮传感器可在磷酸盐缓冲盐溶液中降解，不会对环境造成任何污染。这一系列的研究工作揭示了可修复，可降解和电生理信号敏感的导电水凝胶表皮传感器的制造，这些传感器在人机交互，健康诊断和智能机器人假体设备中具有潜在的应用前景。
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