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<p>This study investigates the effects of varying two-dimensional (2D) borophene nanosheet concentrations on the structural and optical properties of polyvinyl alcohol (PVA) nanocomposites prepared by solution intercalation. X-ray diffraction confirmed retention of borophene’s crystalline structure in the PVA matrix, while scanning electron microscopy (SEM) and transmission electron microscopy (TEM) revealed uniform nanosheet dispersion. Fourier transform infrared spectroscopy (FTIR) indicated strong hydrogen bonding at the interface, wettability tests showed tunable moderate hydrophilicity, UV-Vis spectroscopy demonstrated enhanced absorption with increasing borophene content, photoluminescence spectroscopy showed improved emission properties, and the refractive index increased significantly from 1.65 to 4.28. Dielectric analysis revealed improved permittivity and frequency response, indicating enhanced dielectric performance of the nanocomposites essential for electronic applications. Borophene@PVA nanocomposites exhibited conductivity, and optimal sensitivity at 1 wt% for electrocardiogram (ECG) and electroencephalogram (EEG) sensors, highlighting potential in flexible electronics, sensing and biomedical devices.</p>

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Borophene-Integrated PVA Polymer Nanocomposites: A New Frontier in Optoelectronics and Biopotential Sensor Applications

  • 期刊论文

  • 发表日期：

    2025年12月21日

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  • Chandana Thimmappa Rai,
  • Mohan Krishnaiahnahundi Manjunathaswamy,
  • Rajendra Raju,
  • Aditya Rajvardhan,
  • Kumara Swamy Ningappa,
  • Vedhavathi Hatna Shivarudraiah

摘要

This study investigates the effects of varying two-dimensional (2D) borophene nanosheet concentrations on the structural and optical properties of polyvinyl alcohol (PVA) nanocomposites prepared by solution intercalation. X-ray diffraction confirmed retention of borophene’s crystalline structure in the PVA matrix, while scanning electron microscopy (SEM) and transmission electron microscopy (TEM) revealed uniform nanosheet dispersion. Fourier transform infrared spectroscopy (FTIR) indicated strong hydrogen bonding at the interface, wettability tests showed tunable moderate hydrophilicity, UV-Vis spectroscopy demonstrated enhanced absorption with increasing borophene content, photoluminescence spectroscopy showed improved emission properties, and the refractive index increased significantly from 1.65 to 4.28. Dielectric analysis revealed improved permittivity and frequency response, indicating enhanced dielectric performance of the nanocomposites essential for electronic applications. Borophene@PVA nanocomposites exhibited conductivity, and optimal sensitivity at 1 wt% for electrocardiogram (ECG) and electroencephalogram (EEG) sensors, highlighting potential in flexible electronics, sensing and biomedical devices.