Hard-to-soft transition-enhanced piezoelectricity in poly(vinylidene fluoride) <i>via</i> relaxor-like secondary crystals activated by high-power ultrasonication
Guanchun Rui, Elshad Allahyarov, Ruipeng Li, Philip L. Taylor, Lei Zhu
Abstract
, and the high piezoelectric performance persisted up to 110 °C. The enhanced piezoelectricity was attributed to the relaxor-like secondary crystals in the oriented amorphous fraction, broken off from the primary crystals by ultrasonication, as suggested by differential scanning calorimetry and broadband dielectric spectroscopy studies.
Topics & Concepts
Materials sciencePiezoelectricityDifferential scanning calorimetrySonicationPiezoelectric coefficientAmorphous solidDielectricComposite materialPolyvinylidene fluoridePolymerChemical engineeringCrystallographyOptoelectronicsChemistryEngineeringPhysicsThermodynamicsAdvanced Sensor and Energy Harvesting MaterialsDielectric materials and actuatorsFerroelectric and Piezoelectric Materials