Porous graphene/poly(vinylidene fluoride) nanofibers for pressure sensing

Piezoelectric polymers have emerged as promising materials for application in pressure sensing devices particular wearable applications, where inorganic piezoelectric can face limitations due to their brittleness. One of the bottlenecks adaptation is relatively weak voltage coefficient. Hence there been numerous efforts improve performance comprising by making composites poly(vinylidene fluoride) (PVDF), or through porous PVDF films, nanostructuring. Here, we demonstrate fabrication nanofibers with graphene/PVDF and investigate suitability fiber motion sensing. The are fabricated electrospinning from solution phase. Guided an experimentally validated phase diagram PVDF/solvent/non-solvent ternary system, different porosities pore morphologies produced solidifying fibers binodal spinodal regions diagram. It found that only composite region, graphene loading 0.1 wt% promotes formation electroactive substantially, resulting exhibit enhanced output. further shown sensors biocompatible show high sensitivity body motion.