Thermo-responsive dielectric pulse in poly(vinylidene fluoride)/polyethylene glycol fibrous mats

Thermo-responsive dielectric materials have attracted broad attention in smart electronic device applications. Here, we present a facile one-step fabrication technique of thermo-responsive dielectric fibrous mats via efficient solution blow spinning of poly (vinylidene fluoride)/polyethylene glycol (PVDF/PEG). A strong room-temperature dielectric pulse is triggered by thermally induced crystalline-amorphous phase transition of the PEG. The PVDF, serving as a host, enables the fibrous mats not only to attain solid-solid phase transition but also to spontaneously provide the self-supportability. The dielectric pulse mechanism in PVDF/PEG based on crystalline-amorphous phase transition is clearly demonstrated. The all-polymer dielectric pulsing composites hold great potential in next-generation electronic engineering, exemplified by the creation of flexible, long-service-life, and low-cost smart electrical devices.