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<p>In this work, flexible piezoelectric patches of polyvinylidene fluoride (PVDF) with varied thicknesses and polyvinylidene fluoride doped with molybdenum disulphide nanocomposite patches (PVDF-MoS<sub>2</sub>) have been synthesized. The aim was to enhance the piezoelectric&#xa0;characteristics to capture vibration responses caused by dynamic loading. The hydrothermal technique has been employed to synthesize the bulk of&#xa0;MoS<sub>2</sub> nanoflakes, while the dropcasting method has been employed to create the PVDF and composite PVDF-MoS<sub>2</sub> patches. The XRD and Raman characterization confirmed the successful synthesis of the bulk MoS<sub>2</sub> and representative composite patches with enhanced electroactive β-phase. In addition, the combination of MoS<sub>2</sub> in the PVDF matrix resulted in an open circuit voltage of 16.2&#xa0;V, which is almost four times higher than that of the original PVDF. The voltage output generated by the PVDF and PVDF-MoS<sub>2</sub> composite patches varies from 3–16.2&#xa0;V, surpassing the voltage produced by the lead (Pb) and reduced graphene oxide (rGO) nanogenerators. The findings of this study demonstrate the potential of PVDF and PVDF-MoS<sub>2</sub> for energy harvesting and the development of ecologically friendly sensors for geostructures, which would help engineers and practitioners in these fields.</p>

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Role of Molybdenum Disulphide and Film Thickness on the Piezoelectric Response of Polyvinylidene Fluoride Patches Subjected to Dynamic Loading in Confined Geomaterial

  • 期刊论文

  • 发表日期：

    2026年4月17日

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  • Yakshansh Kumar,
  • Ashutosh Trivedi,
  • Sanjay Kumar Shukla

摘要

In this work, flexible piezoelectric patches of polyvinylidene fluoride (PVDF) with varied thicknesses and polyvinylidene fluoride doped with molybdenum disulphide nanocomposite patches (PVDF-MoS2) have been synthesized. The aim was to enhance the piezoelectric characteristics to capture vibration responses caused by dynamic loading. The hydrothermal technique has been employed to synthesize the bulk of MoS2 nanoflakes, while the dropcasting method has been employed to create the PVDF and composite PVDF-MoS2 patches. The XRD and Raman characterization confirmed the successful synthesis of the bulk MoS2 and representative composite patches with enhanced electroactive β-phase. In addition, the combination of MoS2 in the PVDF matrix resulted in an open circuit voltage of 16.2 V, which is almost four times higher than that of the original PVDF. The voltage output generated by the PVDF and PVDF-MoS2 composite patches varies from 3–16.2 V, surpassing the voltage produced by the lead (Pb) and reduced graphene oxide (rGO) nanogenerators. The findings of this study demonstrate the potential of PVDF and PVDF-MoS2 for energy harvesting and the development of ecologically friendly sensors for geostructures, which would help engineers and practitioners in these fields.