Scholarlink

<p>This study presents a dynamically reconfigurable anisotropic graphene-based metamaterial absorber operating across the 0.5–4.7 THz range. The unit-cell design, composed of two orthogonal pairs of graphene ribbons, produces direction- and polarization-dependent electromagnetic responses. Numerical simulations using CST Studio Suite, complemented by an equivalent circuit model (ECM) analyzed in MATLAB, reveal the transverse electric (TE) and transverse magnetic (TM) resonances. At a Fermi energy of 0.6&#xa0;eV, the absorber demonstrates high tunability and pronounced linear dichroism (LD) up to 99.1%. The structure supports four TE and two TM high-absorption resonances, achieving absorption rates above 94.5% and 82%, with peak values of 99.68% (TE) and 99.92% (TM). These distinct TE/TM spectral fingerprints offer strong potential for polarization-sensitive THz devices, photonic platforms, and Frequency-Encoded Secure Identification (FESID) applications.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Anisotropic terahertz graphene metamaterial multi-band absorber based on an orthogonal dual-ribbon configuration

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年1月9日

查看全文
  • Somayyeh Asgari,
  • Tapio Fabritius

摘要

This study presents a dynamically reconfigurable anisotropic graphene-based metamaterial absorber operating across the 0.5–4.7 THz range. The unit-cell design, composed of two orthogonal pairs of graphene ribbons, produces direction- and polarization-dependent electromagnetic responses. Numerical simulations using CST Studio Suite, complemented by an equivalent circuit model (ECM) analyzed in MATLAB, reveal the transverse electric (TE) and transverse magnetic (TM) resonances. At a Fermi energy of 0.6 eV, the absorber demonstrates high tunability and pronounced linear dichroism (LD) up to 99.1%. The structure supports four TE and two TM high-absorption resonances, achieving absorption rates above 94.5% and 82%, with peak values of 99.68% (TE) and 99.92% (TM). These distinct TE/TM spectral fingerprints offer strong potential for polarization-sensitive THz devices, photonic platforms, and Frequency-Encoded Secure Identification (FESID) applications.