High-Performance\nPiezoresistive Electronic Skin with Bionic Hierarchical Microstructure\nand Microcracks

Abstract

Electronic\nskin (E-skin), a popular research topic at present, has achieved significant\nprogress in a variety of sophisticated applications. However, the\npoor sensitivity and stability severely limit the development of its\napplication. Here, we present a facile, cost-effective, and scalable\nmethod for manufacturing E-skin devices with bionic hierarchical microstructure\nand microcracks. Our devices exhibit high sensitivity (10 kPa^–1) and excellent durability (10 000 cycles).\nThe synergistic enhancement mechanism of the hierarchical microstructure\nand the microcracks on the conductive layers was discovered. Moreover,\nwe carried out a series of studies on the airflow detection and the\nnoncontact speech recognition.