Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 100083, P. R. China.
College of Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing 100049, P. R. China.
Sci Adv. 2020 Jun 26;6(26):eaba9624. doi: 10.1126/sciadv.aba9624. eCollection 2020 Jun.
Mimicking the comprehensive functions of human sensing via electronic skins (e-skins) is highly interesting for the development of human-machine interactions and artificial intelligences. Some e-skins with high sensitivity and stability were developed; however, little attention is paid to their comfortability, environmental friendliness, and antibacterial activity. Here, we report a breathable, biodegradable, and antibacterial e-skin based on all-nanofiber triboelectric nanogenerators, which is fabricated by sandwiching silver nanowire (Ag NW) between polylactic-co-glycolic acid (PLGA) and polyvinyl alcohol (PVA). With micro-to-nano hierarchical porous structure, the e-skin has high specific surface area for contact electrification and numerous capillary channels for thermal-moisture transfer. Through adjusting the concentration of Ag NW and the selection of PVA and PLGA, the antibacterial and biodegradable capability of e-skins can be tuned, respectively. Our e-skin can achieve real-time and self-powered monitoring of whole-body physiological signal and joint movement. This work provides a previously unexplored strategy for multifunctional e-skins with excellent practicability.
通过电子皮肤（e-skins）模拟人类感知的综合功能对于人机交互和人工智能的发展非常有趣。已经开发出了一些具有高灵敏度和稳定性的 e-skins；然而，人们很少关注它们的舒适性、环保性和抗菌活性。在这里，我们报告了一种基于全纳米纤维摩擦电纳米发电机的透气、可生物降解和抗菌的 e-skin，它是通过将银纳米线（Ag NW）夹在聚乳酸-羟基乙酸共聚物（PLGA）和聚乙烯醇（PVA）之间制成的。该 e-skin 具有微纳分级多孔结构，具有用于接触带电的高比表面积和用于热湿传递的众多毛细通道。通过调整 Ag NW 的浓度以及 PVA 和 PLGA 的选择，可以分别调节 e-skin 的抗菌和可生物降解能力。我们的 e-skin 可以实时和自供电监测全身生理信号和关节运动。这项工作为具有出色实用性的多功能 e-skins 提供了一种前所未有的策略。
