Graphene-Impregnated Paper-Based Electronic Skins for Robotic Intelligence and Wireless Health Monitoring

Due to favorable electrical, mechanical, and stability properties of two-dimensional graphene (G), electronic skins (E-skins) were fabricated here based on G-impregnated paper (G-I paper) and interdigitated electrodes (IDEs), and multiple signals could be successfully detected, including pressure and humidity. The pressure-sensitive (P-S) E-skin showed a relatively large pressure detection range of 0–18.9 kPa, and its GF values were 0.96 and 0.44 kPa –1 with ranges of 1.5 × 10 –2 –7.2 and 7.2–18.9 kPa, respectively. For the humidity-sensitive (H-S) E-skin, its GF values were 2.62 × 10 –2 and 0.55 with RH ranges of 25–45 and 45–95%, respectively. In addition, the prepared E-skins were applied in the fields of intelligent robotics and wearable devices. Robotic intelligence and wireless health monitoring were successfully realized.