Singh Thangjam Iboyaima, Singh Pawan, Karki Bhishma
Department of Physics, Himalayiya University, Doiwala, Dehradun, Uttarakhand 248140 India.
Department of Physics, Tri-Chandra Multiple Campus, Tribhuvan University, Kathmandu, 44600 Nepal.
Plasmonics. 2023;18(3):1173-1180. doi: 10.1007/s11468-023-01840-x. Epub 2023 Apr 19.
The sensing performance parameters of the SPR sensors are sensitivity, detection accuracy, the figure of merit (FOM), and full-width half maximum (FWHM), and it has been discussed with refractive indexes of analyte 1.33, 1.35, 1.38, and 1.39. In this, we proposed a multilayer structure comprising nanofilms of Ag, Silicon, and PtSe for the early diagnosis of chikungunya virus. The suggested sensor structure consists of a BK7 (borosilicate crown) coupling prism over which the nanofilm of silver metal is present. The layer thicknesses and the number of silicon and PtSe sheets are optimized for high performance. At the operating wavelength of 633 nm, a Kretschmann-based SPR sensor has been proposed, which gives the highest sensitivity of 287.3 Deg/RIU. The principle of attenuated total reflection has been employed for the performance analysis of the sensor.
表面等离子体共振（SPR）传感器的传感性能参数包括灵敏度、检测精度、品质因数（FOM）和半高宽（FWHM），并且已经针对分析物折射率为1.33、1.35、1.38和1.39的情况进行了讨论。在此，我们提出了一种由银、硅和硒化铂纳米薄膜组成的多层结构，用于基孔肯雅病毒的早期诊断。所建议的传感器结构由一个BK7（硼硅酸盐冕牌玻璃）耦合棱镜组成，在其上面存在银金属纳米薄膜。硅和硒化铂片层的厚度和数量经过优化以实现高性能。在633nm的工作波长下，提出了一种基于Kretschmann结构的SPR传感器，其具有287.3度/折射率单位（Deg/RIU）的最高灵敏度。采用了衰减全反射原理对传感器进行性能分析。
