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<p>The swift adoption of self-powered energy-harvesting technologies presents an exciting opportunity. However, the challenge lies in the development of flexible, energy-efficient, sensitive, and easy-to-assemble devices. Electrospun nanofibrous films can be used in hybrid nanogenerators (HyNGs) for advanced triboelectric nanogenerators (TENGs), converting mechanical energy into electrical energy and serving self-powered sensor applications due to their exceptional electrical output, lightweight nature, and flexibility. In this study, polydimethylsiloxane (PDMS) is integrated into a poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) polymer by electrospinning to fabricate PDMS/PVDF-HFP composite fibrous films (CFFs)-based HyNGs. The CFF exhibits exceptional β-phase fraction and dielectric properties that help to improve the HyNG’s electrical performance in a contact-separation mode. The optimized HyNG exhibits exceptional stability and durability during long-term operation, making it effective for harvesting biomechanical energy from low-power portable devices. Furthermore, it can operate as a sensor that engages an Arduino for motion-sensing applications. When combined with Arduino and Bluetooth modules, the HyNG sensor can offer an innovative solution for fitness tracking by transmitting step-count data directly to a smartphone. This capability empowers users to monitor their health through their activity levels effectively. Additionally, the HyNGs operate to build real-time speed sensing&#xa0;and overspeed alerts and find vehicle direction applications. From these results, the proposed HyNG can be leveraged by artificial intelligence models to simulate real-world scenarios and support decision-making processes that improve road safety applications.</p>

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Flexible Electrospun PDMS/PVDF-HFP Composite Nanofibers-Based Hybrid Nanogenerators for Efficient Mechanical Energy Harvesting and Multi-Sensing Applications

  • 期刊论文

  • 发表日期：

    2025年12月1日

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  • Venkata Siva Kavarthapu,
  • Punnarao Manchi,
  • Anand Kurakula,
  • Hong Mu Park,
  • Yeong Hwan Ko,
  • Jae Su Yu

摘要

The swift adoption of self-powered energy-harvesting technologies presents an exciting opportunity. However, the challenge lies in the development of flexible, energy-efficient, sensitive, and easy-to-assemble devices. Electrospun nanofibrous films can be used in hybrid nanogenerators (HyNGs) for advanced triboelectric nanogenerators (TENGs), converting mechanical energy into electrical energy and serving self-powered sensor applications due to their exceptional electrical output, lightweight nature, and flexibility. In this study, polydimethylsiloxane (PDMS) is integrated into a poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) polymer by electrospinning to fabricate PDMS/PVDF-HFP composite fibrous films (CFFs)-based HyNGs. The CFF exhibits exceptional β-phase fraction and dielectric properties that help to improve the HyNG’s electrical performance in a contact-separation mode. The optimized HyNG exhibits exceptional stability and durability during long-term operation, making it effective for harvesting biomechanical energy from low-power portable devices. Furthermore, it can operate as a sensor that engages an Arduino for motion-sensing applications. When combined with Arduino and Bluetooth modules, the HyNG sensor can offer an innovative solution for fitness tracking by transmitting step-count data directly to a smartphone. This capability empowers users to monitor their health through their activity levels effectively. Additionally, the HyNGs operate to build real-time speed sensing and overspeed alerts and find vehicle direction applications. From these results, the proposed HyNG can be leveraged by artificial intelligence models to simulate real-world scenarios and support decision-making processes that improve road safety applications.