Highly Sensitive THz Refractive Index Sensor Based on Folded Split-Ring Metamaterial Graphene Resonators

被引：0
|
作者：
Mohammad-Reza Nickpay
Mohammad Danaie
Ali Shahzadi
机构：
[1] Semnan University,Faculty of Electrical and Computer Engineering
来源：
Plasmonics | 2022年 / 17卷
关键词：
Graphene; Absorber; Metamaterial; Surface Plasmons; Terahertz; Refractive Index Sensor;
D O I：
暂无
中图分类号：
学科分类号：
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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页码：237 / 248
页数：11
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