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<p>Epsilon-near-zero (ENZ) materials enable advanced photonics through strong field confinement, enhanced nonlinearity and tunability. We propose an H-shaped metamaterial for highly controllable infrared ENZ response. By tailoring geometric parameters including gap, width, length, and material, we precisely tune the number and frequency of ENZ points. Across 200–450 THz, the structure exhibits up to four ENZ points, significantly improving operational bandwidth and performance over existing designs. This platform holds great promise for next-generation infrared devices, including modulators, switches, and light-manipulation systems.</p>

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Designing epsilon-near-zero structures based on metamaterials in the infrared region

  • 期刊论文

  • 发表日期：

    2026年2月27日

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  • Somayeh Karimi,
  • Zahra Farrokhi,
  • Mehdi Askari,
  • Hassan Pakarzadeh

摘要

Epsilon-near-zero (ENZ) materials enable advanced photonics through strong field confinement, enhanced nonlinearity and tunability. We propose an H-shaped metamaterial for highly controllable infrared ENZ response. By tailoring geometric parameters including gap, width, length, and material, we precisely tune the number and frequency of ENZ points. Across 200–450 THz, the structure exhibits up to four ENZ points, significantly improving operational bandwidth and performance over existing designs. This platform holds great promise for next-generation infrared devices, including modulators, switches, and light-manipulation systems.