Ti₃C₂T _x quantum dots/leaf veins based sensors with ultra-broadrange high sensitivity

Abstract Flexible pressure sensors and electronic skins have attracted more and more attention in human – machine interaction, intelligent robotics, and wearable health monitoring electronics. However, it is still challenging to trade off between high sensitivity and a wide working range to meet a variety of pressure applications. Herein, we reported a flexible pressure sensor assembled by a simple and cost-effective approach using coating Ti 3 C 2 T x quantum dots on leaf veins. Due to the ultrahigh specific surface area, excellent electrical conductivity, and hierarchical micro-network structure, the device shows excellent sensitivity (25.83 kPa −1 ), a wide working range (0.1–1500 kPa), remarkable high-pressure resolution (5 kPa under high pressure of 100 kPa or 5%), high stability (over 4000 cycles) and fast response time (<0.3 s). Furthermore, we demonstrated the applications of body motion monitoring during different parts and activities. The results prove our device is a potential candidate for next-generation wearable electronics and human – machine interaction.