Abstract In this paper, a high absorption performance metamaterial based on phase change material vanadium dioxide (VO2) is verified in experiments. Two absorption peaks (P1, P2) with 60% and 72% amplitudes are achieved based on bright-bright modes coupling or the Ohmic loss mode in 2–40.0 THz at room temperature. P1 and P2 are enhanced and shifted to lower frequency with the diameter D of metal disks increasing or the linear distance L reducing between two metal disks in experiments. When L = 0, a new metal array is achieved since two metal disks contacting with each other, which results in two new absorption peaks (P3, P4) based on new plasmon-resonance hybridization or Ohmic loss mode, respectively. In further experiments, a new absorption peak (P5) is found in heating process or cooling process based on the insulator-metal phase transition of the VO2 layer, while P1 and P2 are insensitive to temperature. The metamaterial exhibits the stability of the original absorption properties and the tunability of the temperature.

中文翻译：

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基于VO2层的多模手性杂化超材料的验证与调制

摘要 本文通过实验验证了一种基于相变材料二氧化钒（VO2）的高吸收性能超材料。基于亮-亮模式耦合或室温下 2-40.0 THz 的欧姆损耗模式，实现了两个振幅分别为 60% 和 72% 的吸收峰（P1、P2）。在实验中，随着金属圆盘直径 D 的增加或两个金属圆盘之间的线性距离 L 的减小，P1 和 P2 被增强并移至较低频率。当 L = 0 时，由于两个金属盘彼此接触，因此实现了新的金属阵列，这分别基于新的等离子体共振杂交或欧姆损耗模式产生了两个新的吸收峰（P3、P4）。在进一步的实验中，基于VO2层的绝缘体-金属相变，在加热或冷却过程中发现了一个新的吸收峰（P5），而P1和P2对温度不敏感。超材料表现出原始吸收特性的稳定性和温度的可调性。