Simultaneously Detecting Subtle and Intensive Human Motions Based on Ag Nanoparticles Bridged Graphene Strain Sensor.

There is a growing demand for flexible electronic devices. In particular, strain sensors with high performance have attracted more and more attentions. In this work, Ag nanoparticles (NPs) bridged graphene strain sensor is developed for simultaneously detecting subtle and intensive human motions. Ag NPs can bridge lots of gaps between the self-overlapping graphene sheets, which endows the strain sensor with many excellent features. The high sensitivity with the large GF of 475, and strain range over 14.5%, high durability of the sensor has been achieved. Besides, the excellent consistency and repeatability of the fabrication process is verified. Furthermore, the model for explaining the working mechanism of the strain sensor is proposed. The designed wearable strain sensor can be applied in human motions detecting.