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pp. 5669-5683
S&M4271 Research paper https://doi.org/10.18494/SAM6047 Published: December 26, 2025 Optimized Near-field Electrospinning of Polyvinylidene Fluoride Fibers for Enhanced Piezoelectric Sensor Performance [PDF] Ming-Chan Lee and Liang-Kai Chen (Received November 18, 2025; Accepted December 4, 2025) Keywords: electrospinning, PVDF, fiber alignment, piezoelectric sensor
Conventional far-field electrospinning typically produces randomly oriented fibers, limiting the performance of piezoelectric sensors. We demonstrate a near-field electrospinning (NFES) approach to fabricate highly aligned piezoelectric fiber sensors with controlled morphology. Pure polyvinylidene fluoride (PVDF) and PVDF-graphene composite solutions were systematically evaluated under various applied voltages, needle-to-collector distances, and flow rates. Taylor cone stability was correlated with fiber uniformity and diameter distribution. Optimal conditions (11 wt% PVDF, applied voltage: 2 kV, needle-to-collector distance: 1 mm, flow rate: 1 mL/h) yielded highly aligned fibers with an average diameter of 26.7 μm and excellent consistency. The fabricated sensor, integrated with a 7 kHz high-pass filter, exhibited 472 mV output voltage under 5 N tapping stimulation at 2 Hz, showing significant potential for wearable tactile sensing applications. The PVDF-graphene composite demonstrated 23% higher sensitivity than pure PVDF, attributed to enhanced interfacial polarization.
Corresponding author: Ming-Chan Lee![]() ![]() This work is licensed under a Creative Commons Attribution 4.0 International License. Cite this article Ming-Chan Lee and Liang-Kai Chen, Optimized Near-field Electrospinning of Polyvinylidene Fluoride Fibers for Enhanced Piezoelectric Sensor Performance, Sens. Mater., Vol. 37, No. 12, 2025, p. 5669-5683. |