The design and development of resonance-tunable and high-absorptivity metamaterial absorbers is a research hotspot. In this paper, a single-band tunable metamaterial absorber based on the strontium titanate (STO) layer is designed and measured. This absorption peak is enhanced from 90% ($D\text{=}3.2\mathrm{\mu }\text{m}$) to 99.4% ($D\text{=}4.2\mathrm{\mu }\text{m}$) and the resonant frequency point is shifted from 6.2 THz to 5.8 THz, while it is enhanced and shifted to lower frequencies with the structural parameter P reducing. Measured results show that this absorption peak shows only a 2% reduction when the measured temperature is increased from 300 K to 380 K. Synchronous, the resonant frequency point is shifted from 6.2 THz to 7.1 THz. Based on the temperature-dependence of the STO layer, a temperature tunable metamaterial absorber is experimentally verified.

共振可调高吸收率超材料吸收器的设计与开发是研究热点。本文设计并测量了基于钛酸锶（STO）层的单波段可调谐超材料吸收器。该吸收峰从90％增强（$d\text{=}3.2\mathrm{\mu }\text{米}$）至99.4％（$d\text{=}4.2\mathrm{\mu }\text{米}$），谐振频率点从6.2 THz移至5.8 THz，同时随着结构参数P的减小而增强并移至较低频率。测量结果表明，当测量温度从300 K升高到380 K时，该吸收峰仅减少2％。同步时，谐振频率点从6.2 THz移至7.1 THz。基于STO层的温度依赖性，通过实验验证了温度可调超材料吸收器。