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<p>Metasurfaces are artificial structures with low thickness and high compactness, which recently have shown great applications in communications, security, sensing, and other fields. In this paper, the capability of engineering metasurface structures via changing geometry and material for increasing the number of resonance bands and the amount of quality (<i>Q</i>) factor in the frequency range of 1.0 to 2.0 terahertz (THz) is investigated. Various designs of metasurface structures, which consist of different layers and materials, are simulated to engineer the number and <i>Q</i> factor of different resonance bands over the THz region. Results show that by appropriately changing the geometry, the number of resonance bands in the transmission spectrum can be increased beyond seven pronounced dips with more than 90% depletion, where the highest <i>Q</i> factor is 1994.</p>

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Theoretical Study of Metasurface Engineering for High Q-Factor Multi-band Resonances in Terahertz Region

  • 期刊论文

  • 发表日期：

    2025年5月14日

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  • Hassan Pakarzadeh,
  • Haniyeh Deylami,
  • Zahra Farrokhi

摘要

Metasurfaces are artificial structures with low thickness and high compactness, which recently have shown great applications in communications, security, sensing, and other fields. In this paper, the capability of engineering metasurface structures via changing geometry and material for increasing the number of resonance bands and the amount of quality (Q) factor in the frequency range of 1.0 to 2.0 terahertz (THz) is investigated. Various designs of metasurface structures, which consist of different layers and materials, are simulated to engineer the number and Q factor of different resonance bands over the THz region. Results show that by appropriately changing the geometry, the number of resonance bands in the transmission spectrum can be increased beyond seven pronounced dips with more than 90% depletion, where the highest Q factor is 1994.