Metamaterial absorbers are widely used in the sensing field based on their rich resonance behaviors. So far, the applications of metamaterial absorbers in gas sensing have not been paid much attention by researchers. A single-mode narrow bandwidth THz metamaterial absorber is suggested and validated. An absorption peak is excited based on local surface polarization mode resonance and dielectric loss in the 2 to 36 THz band. In experiments, the hole array diameter R is increased, the absorption peak is increased from 0.51 to 0.66, and resonance position is moved to the high-frequency region. When the dielectric layer thickness h2 is increased, the absorption peak is increased from 0.51 to 0.57, and resonance position is moved to the low-frequency region. Similarly, when the dielectric layer thickness h3 is increased, the absorption peak is increased from 0.51 to 0.53, and resonance position is also moved to the low-frequency region. This metamaterial absorber exhibits the feasible for gas and liquid sensing.

中文翻译：

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用于气体和液体检测的太赫兹单模超材料的优化吸收性能

基于其丰富的共振行为，超材料吸收器被广泛应用于传感领域。迄今为止，超材料吸收体在气体传感中的应用并未受到研究人员的重视。建议并验证了一种单模窄带宽 THz 超材料吸收器。基于 2 至 36 THz 频带中的局部表面偏振模式共振和介电损耗激发吸收峰。实验中，孔阵直径R增大，吸收峰由0.51增加到0.66，共振位置向高频区移动。当介质层厚度h2增加时，吸收峰从0.51增加到0.57，谐振位置向低频区移动。类似地，当介电层厚度 h3 增加时，吸收峰由0.51增加到0.53，共振位置也向低频区移动。这种超材料吸收器展示了气体和液体传感的可行性。