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<p>This study explores the utilization of fabricated piezoelectric polyvinylidene fluoride nanofiber (NF-PVDF) materials in wearable electronic sensing applications by investigating their current-voltage (<InlineEquation ID="IEq2"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="40243_2025_321_Article_IEq2.gif" Format="GIF" Height="15" Rendition="HTML" Resolution="72" Type="Linedraw" Width="44" /> </InlineMediaObject> <EquationSource Format="TEX">\(\:I-V\)</EquationSource> </InlineEquation>) characteristics under controlled ultra-low-frequency excitation forces. The results demonstrate a significant power harvesting capability, achieving an output power of 0.12 µW/mm<sup>2</sup> at an operating point of 5.04&#xa0;V and 7.7 µA. Additionally, the piezoelectric harvester was integrated into a charging-discharge circuit alongside a rectifier capacitor and a typical IoT wearable sensor, leveraging the advantages of a flexible substrate. Experimental measurements of the charging and discharging curves confirm the effective energy management of the system, indicating a robust potential for deployment in real-world sensing applications. These findings highlight the promising application of NF-PVDF in sustainable energy harvesting for next-generation wearable technologies.</p>

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Enhanced energy harvesting from NF-PVDF piezoelectric material for wearable electronics: I– V characterization and charge-discharge performance

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年7月25日

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  • Ahmed I. Emara,
  • Afaf Farag Shahba,
  • Gehad Ali,
  • Mohamed Mamdouh,
  • Sameh O. Abdellatif,
  • K. Nassar,
  • Tamer Hamouda

摘要

This study explores the utilization of fabricated piezoelectric polyvinylidene fluoride nanofiber (NF-PVDF) materials in wearable electronic sensing applications by investigating their current-voltage ( \(\:I-V\) ) characteristics under controlled ultra-low-frequency excitation forces. The results demonstrate a significant power harvesting capability, achieving an output power of 0.12 µW/mm2 at an operating point of 5.04 V and 7.7 µA. Additionally, the piezoelectric harvester was integrated into a charging-discharge circuit alongside a rectifier capacitor and a typical IoT wearable sensor, leveraging the advantages of a flexible substrate. Experimental measurements of the charging and discharging curves confirm the effective energy management of the system, indicating a robust potential for deployment in real-world sensing applications. These findings highlight the promising application of NF-PVDF in sustainable energy harvesting for next-generation wearable technologies.