A highly sensitive absorption-based sensor based on folded split-ring metamaterial graphene resonators (FSRMGRs) is designed, and its biomedical application in terahertz (THz) spectrum is investigated. The sensor has a nearly perfect absorption, with a spectral absorption coefficient of 99.75% at 4 THz and an average Q-factor of 13.76. The resonance peak frequency is sensitive to the refractive index (RI) of the test medium (analyte), and a fairly high sensitivity of 851 GHz/RIU has been obtained. The specifications of the sensor can be tuned by an external DC-bias voltage applied to the graphene layer. According to the obtained results, the developed absorber appears to be a good candidate bio-sensing applications.

设计了一种基于折叠裂环超材料石墨烯谐振器（FSRMGR）的高灵敏度吸收型传感器，并研究了其在太赫兹（THz）光谱中的生物医学应用。该传感器具有近乎完美的吸收，在 4 THz 处的光谱吸收系数为 99.75%，平均Q因子为 13.76。共振峰频率对测试介质（分析物）的折射率（RI）敏感，获得了相当高的灵敏度，达到851 GHz/RIU。传感器的规格可以通过施加到石墨烯层的外部直流偏置电压进行调整。根据获得的结果，开发的吸收体似乎是一个很好的候选生物传感应用。