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<p>The design and development of new photoelectric devices based on near-field radiation heat transfer between components is a hot topic. A metamaterial based on the hybrid coupling effect between the LSP-LSP mode and the LSPP mode obtains two NFRHT peaks (17.47 and 36.08&#xa0;THz) in the 5-40&#xa0;THZ range. The NFRHT properties of the metamaterial samples can be modulated by optimizing the gradient factor n and filling factor <i>f</i> of the gradient nanoparticles. Based on the high NFRHT properties of the metamaterial sample, a heat transfer sensing scheme is proposed and applied to measure the thermal properties of the fabric sample, including thermal resistance, thermal diffusion coefficient, and thermal response current. These measurements demonstrate the modulability of the NFRHT properties of the metamaterial sample and expand the application range of this metamaterial. </p>

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Measurement of Near-Field Radiative Heat Transfer Properties and Sensing Properties of Dual-Mode Tunable Metamaterials in the Terahertz Band

  • 期刊论文

  • 发表日期：

    2025年5月7日

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  • Junjie Zheng,
  • Min Zhong

摘要

The design and development of new photoelectric devices based on near-field radiation heat transfer between components is a hot topic. A metamaterial based on the hybrid coupling effect between the LSP-LSP mode and the LSPP mode obtains two NFRHT peaks (17.47 and 36.08 THz) in the 5-40 THZ range. The NFRHT properties of the metamaterial samples can be modulated by optimizing the gradient factor n and filling factor f of the gradient nanoparticles. Based on the high NFRHT properties of the metamaterial sample, a heat transfer sensing scheme is proposed and applied to measure the thermal properties of the fabric sample, including thermal resistance, thermal diffusion coefficient, and thermal response current. These measurements demonstrate the modulability of the NFRHT properties of the metamaterial sample and expand the application range of this metamaterial.