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<p>In this paper, we design a gradient metamaterial with a double resonance mode and measure the near-field radiative heat transfer (NFRHT) properties in 5–40 THz. The metamaterial sample achieves two NFRHT peaks based on the surface plasmon polarization&#xa0;(SPP) and the local surface plasmons (LSP) modes. The amplitudes and resonance positions of these NFRHT peaks are modulated by changing the gradient nanoparticles. We propose a sensing scheme based on this gradient metamaterial samples to reveal the thermal characteristics in the fabric field. The measured results verify the feasibility for expanding the applications of the metamaterials and developing new photoelectric devices.</p>

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Design and verification of the near-field thermal radiation and thermal sensing of a dual-mode gradient metamaterial

  • 期刊论文

  • 发表日期：

    2025年11月17日

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  • Min Zhong

摘要

In this paper, we design a gradient metamaterial with a double resonance mode and measure the near-field radiative heat transfer (NFRHT) properties in 5–40 THz. The metamaterial sample achieves two NFRHT peaks based on the surface plasmon polarization (SPP) and the local surface plasmons (LSP) modes. The amplitudes and resonance positions of these NFRHT peaks are modulated by changing the gradient nanoparticles. We propose a sensing scheme based on this gradient metamaterial samples to reveal the thermal characteristics in the fabric field. The measured results verify the feasibility for expanding the applications of the metamaterials and developing new photoelectric devices.