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<p>The manuscript portrays the study and analysis of T-shaped nanostrip square-notch graphene plasmonic frequency-selective surface for transformation optics applications. The plasmonic properties of the design materials, such as graphene and silicon dioxide, are studied at the optical regime using conductivity and permittivity models. Further, properties of graphene are studied at various levels of the chemical potential. The reflection coefficient, transmission coefficient, polarisation conversion efficiency and field distribution of the proposed graphene frequency-selective surface are investigated using substrate parameters, graphene parameters and input incident angles. It is observed that the proposed frequency-selective surface exhibits double pass bands with the reflection and transmission coefficients of −&#xa0;32.9&#xa0;dB, −&#xa0;1.3&#xa0;dB and −&#xa0;42.2&#xa0;dB, −&#xa0;2.6&#xa0;dB, respectively, at 174.15&#xa0;THz and 463.57&#xa0;THz, respectively. Further, maximum polarisation conversion efficiency of 99.8% at 174.15&#xa0;THz and maximum enhancement factor of 690.75 are observed at 463.57&#xa0;THz. Additionally, the proposed structure is stable over a wide range of input incident angles.</p>

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T-Shaped Nanostrip Square-Notch Graphene Plasmonic Frequency-Selective Surface for Transformation Optics

  • 期刊论文

  • 发表日期：

    2026年4月6日

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  • S Kavitha,
  • Ashish Singh,
  • Subhash C. Singh,
  • Jyoti Singh

摘要

The manuscript portrays the study and analysis of T-shaped nanostrip square-notch graphene plasmonic frequency-selective surface for transformation optics applications. The plasmonic properties of the design materials, such as graphene and silicon dioxide, are studied at the optical regime using conductivity and permittivity models. Further, properties of graphene are studied at various levels of the chemical potential. The reflection coefficient, transmission coefficient, polarisation conversion efficiency and field distribution of the proposed graphene frequency-selective surface are investigated using substrate parameters, graphene parameters and input incident angles. It is observed that the proposed frequency-selective surface exhibits double pass bands with the reflection and transmission coefficients of − 32.9 dB, − 1.3 dB and − 42.2 dB, − 2.6 dB, respectively, at 174.15 THz and 463.57 THz, respectively. Further, maximum polarisation conversion efficiency of 99.8% at 174.15 THz and maximum enhancement factor of 690.75 are observed at 463.57 THz. Additionally, the proposed structure is stable over a wide range of input incident angles.