Wearable Sensors Based on Graphene Nanoplatelets Reinforced Polydimethylsiloxane for Human Motion Monitoring: Analysis of Crack Propagation and Cycling Load Monitoring

The use of graphene and other carbon nanoparticles is now interest for developing chemical (gas compounds detectors) physical sensors. In this work, a nanoplatelet (GNP)-PDMS sensor proposed. More specifically, its strain-sensing capabilities under consecutive cycles as well the crack propagation mechanisms are widely analyzed. First, an analysis electrical properties shows that increase GNP content leads, expected, to conductivity, ranging from values around 10?3 1 S/m 5 11 wt.% samples. monitoring exceptional sensitivity proposed flexible sensors, with highly exponential behavior resistance due prevalent breakage pathways occurs. Furthermore, response cyclic load proves very high robustness, similar when comparing different increases decreasing (from 15–25 25–50 at 7 content, respectively), fact explained by prevalence tunneling low contents. Finally, proof-of-concept human motion detection neck, wrist facial movements successfully achieved, indicating applicability