Highly-stable polymer-crosslinked 2D MXene-based flexible biocompatible electronic skins for in vivo biomonitoring. (June 2021)

• Record Type: Journal Article
• Authors: Zhao, Lianjia; Wang, Lili; Zheng, Yiqiang; Zhao, Shufang; Wei, Wei; Zhang, Dawei; Fu, Xiyao; Jiang, Kai; Shen, Guozhen; Han, Wei
• Is Part Of: Nano energy. Volume 84(2021)
• Publication Date: 2021-06
• Subjects: Electronic skins -- PVA/MXene -- Molecular dynamics calculations -- Ultra-stable -- Biocompatibility -- In vivo study; Nanoscience -- Periodicals; Nanotechnology -- Periodicals; Nanostructured materials -- Periodicals; Power resources -- Technological innovations -- Periodicals; Nanoscience; Nanostructured materials; Nanotechnology; Power resources -- Technological innovations; Periodicals; 621.042
• DOI: 10.1016/j.nanoen.2021.105921
• Languages: English
• ISSNs: 2211-2855

Abstract

Abstract: The ability of electronic skins to identify physiological and physical signals accurately is the key to human-computer interaction. However, it is still a great challenge to improve stability of electronic-skin when maintaining the high-level pressure-response for applications in harsh conditions. Here, a highly-stable electronic skin is designed by synergistically incorporating strong hydrogen-bonds in MXene and polyvinyl alcohol (PVA). Molecular dynamics calculations show that the introduction of PVA can reduce the diffusion coefficient of MXene in acidic and basic solutions, increasing the adsorption (free) energies and providing hybrid film with good chemical stability. Therefore, the film provides stable performance recordings that last for over half a year in harsh environments. The film also shows good biocompatibility and function in an in-vivo study conducted on mice. To enhance functionality of soft robots and personal protective equipment used in harsh environments, it is important that the film has persistent and stable performance, all-weather usability, and good in vivo compatibility. Graphical Abstract: Biocompatible electronic skin based on MXene and PVA with strong hydrogen-bonds is designed. The film provides stable performance recordings that last for over half a year in harsh environments and shows good biocompatibility and function in a mice model in vivo study. This work shows that the use of electronic technology to reproduce the characteristics of skin provides a new direction for future soft robot and medical repair. ga1 Highlights: A highly-stable electronic-skin is designed by synergistically incorporating strong hydrogen-bonds in MXene and PVA. The film provides stable performance recordings that last for over half a year in harsh environments. Electronic-skin shows good biocompatibility and function in a mice model in vivo study.