A biodegradable silk-based energy-generating skin with dual-mode tactile perception

초록

Tactile skin with artificial mechanoreceptors can perceive static pressure and dynamic vibrations. However, the complexity of these tactile sensing systems has challenges in power consumption and recyclability. We present a dual-mode energy-generating skin (EG skin) capable of self-powered haptic sensing using a biodegradable hygroscopic film based on silk fibroin and phytic acid. At 85% relative humidity (RH), this EG skin generates an open-circuit voltage of 1 V and a maximum short-circuit current density of 110 μA cm