Alotaibi Maged F, Al-Hadeethi Yas, Lohia Pooja, Singh Sachin, Dwivedi D K, Umar Ahmad, Alzayed Hamdah M, Algadi Hassan, Baskoutas Sotirios
Department of Electronics and Communication Engineering, Madan Mohan Malaviya University of Technology, Gorakhpur 273010, India.
Department of Physics, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia.
Nanomaterials (Basel). 2022 Jun 27;12(13):2205. doi: 10.3390/nano12132205.
In the traditional surface plasmon resonance sensor, the sensitivity is calculated by the usage of angular interrogation. The proposed surface plasmon resonance (SPR) sensor uses a diamagnetic material (AlO), nickel (Ni), and two-dimensional (2D) BlueP/WS (blue phosphorous-tungsten di-sulfide). The AlO sheet is sandwiched between silver (Ag) and nickel (Ni) films in the Kretschmann configuration. A mathematical simulation is performed to improve the sensitivity of an SPR sensor in the visible region at a frequency of 633 nm. The simulation results show that an upgraded sensitivity of 332°/RIU is achieved for the metallic arrangement consisting of 17 nm of AlO and 4 nm of Ni in thickness for analyte refractive indices ranging from 1.330 to 1.335. The thickness variation of the layers plays a curial role in enhancing the performance of the SPR sensor. The thickness variation of the proposed configuration containing 20 nm of AlO and 1 nm of Ni with a monolayer of 2D material BlueP/WS enhances the sensitivity to as high as 374°/RIU. Furthermore, it is found that the sensitivity can be altered and managed by means of altering the film portions of Ni and AlO.
在传统的表面等离子体共振传感器中，灵敏度是通过角度询问法来计算的。所提出的表面等离子体共振（SPR）传感器使用了一种抗磁性材料（AlO）、镍（Ni）以及二维（2D）的BlueP/WS（蓝磷 - 钨二硫化物）。AlO薄片在Kretschmann结构中夹在银（Ag）和镍（Ni）薄膜之间。进行了数学模拟以提高SPR传感器在633nm频率可见光区域的灵敏度。模拟结果表明，对于由厚度为17nm的AlO和4nm的Ni组成的金属结构，在分析物折射率范围为1.330至1.335时，实现了332°/RIU的提升灵敏度。各层的厚度变化在提高SPR传感器性能方面起着关键作用。所提出的包含20nm的AlO和1nm的Ni以及单层2D材料BlueP/WS的结构的厚度变化将灵敏度提高到了高达374°/RIU。此外，发现可以通过改变Ni和AlO的薄膜部分来改变和控制灵敏度。
