Fabric-like Electrospun PVAc–Graphene Nanofiber Webs as Wearable and Degradable Piezocapacitive Sensors

This study developed electrospun polyvinyl acetate (PVAc)–graphene nanofiber membranes as degradable piezocapacitive pressure sensors for wearable electronics and soft human–machine interfaces. Incorporation of graphene nanofillers significantly enhanced dielectric properties and pressure sensitivity while preserving mechanical flexibility. The sensors demonstrated reliable performance across a wide pressure range, low hysteresis, and fast response times. Extensive cyclic loading tests confirmed mechanical robustness and long-term durability. Functional demonstrations included gait monitoring, muscle activation sensing, respiration monitoring, and posture detection, highlighting the suitability of the materials for wearable and transient electronic applications.