太赫兹辐射
超材料
材料科学
折射率
谐振器
光电子学
石墨烯
吸收(声学)
分裂环谐振器
灵敏度(控制系统)
衰减系数
光学
共振(粒子物理)
超材料吸收剂
可调谐超材料
物理
纳米技术
电子工程
工程类
粒子物理学
复合材料
作者
Mohammad-Reza Nickpay,Mohammad Danaie,Ali Shahzadi
出处
期刊:Plasmonics
[Springer Nature]
日期:2021-08-10
卷期号:17 (1): 237-248
被引量:38
标识
DOI:10.1007/s11468-021-01512-8
摘要
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.
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