表面等离子共振
材料科学
折射率
图层(电子)
棱镜
等离子体
吸收(声学)
石墨烯
表面等离子体子
光电子学
生物传感器
电介质
铬
光学
分析化学(期刊)
等离子体子
化学
纳米技术
复合材料
物理
纳米颗粒
冶金
色谱法
量子力学
作者
Sofyan A. Taya,Noor E. Al-Ashi,Omar M. Ramahi,İlhami Çolak,Iraj Sadegh Amiri
出处
期刊:Journal of The Optical Society of America B-optical Physics
[The Optical Society]
日期:2021-07-26
卷期号:38 (8): 2362-2362
被引量:38
摘要
We propose a surface plasmon resonance (SPR) biosensor that consists of six layers: glass prism (SF 10), chromium, metal, molybdenum disulphide, graphene, and sensing medium. A seventh layer is added between the glass prism and the chromium layer, which is a gap filled with plasma as a dielectric material. The plasma layer is expected to carry the amenity of the graphene optical characteristics and absorption ability. It is also expected to improve sensitivity of the SPR structure. The numerical calculations show that the sensitivity of the sensor is 76.11 deg/RIU (refractive index unit); without the plasma layer, it can be improved to 103 deg/RIU in the presence of 25 and 35 nm thick plasma and silver layers, respectively. The structure parameters are optimized with respect to the sensitivity. The proposed sensor can potentially be used for biological purposes.
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