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Performance analysis of Bloch surface wave-based sensor using transition metal dichalcogenides
Applied Nanoscience ( IF 3.869 ) Pub Date : 2020-08-28 , DOI: 10.1007/s13204-020-01538-0
Amit Kumar Goyal , Jasmine Saini

In this manuscript, a highly sensitive Bloch surface wave (BSW)-based sensor is proposed for refractive index sensing analysis. The structure is designed using an one-dimensional photonic crystal (1D-PhC) structure. A top defective layer of transition metal dichalcogenides (TMDC) material with atomic layer thickness is introduced to confine a Bloch mode analogues to surface plasmon-like mode at the top interface. The detailed analysis is carried out to investigate the impact of number of TMDC monolayers on sensing performance. The wavelength (angular) interrogation provides the significant higher sensitivity of around 9650 nm/RIU (or 231°/RIU). Besides the sensitivity, the rigorous analysis of full-width-half-maximum (FWHM) and figure-of-merit (FOM) is also carried out and a FOM of around 48,250/RIU (38,500/RIU) has been reported. The proposed design possesses the advantage in terms of easy fabrication and integration capability to develop handheld senor systems, especially for biological and chemical sensing.



中文翻译:

过渡金属二卤化物在Bloch表面波基传感器中的性能分析

在此手稿中,提出了一种基于高灵敏度Bloch表面波(BSW)的传感器,用于折射率传感分析。使用一维光子晶体(1D-PhC)结构设计该结构。引入具有原子层厚度的过渡金属二硫化氢(TMDC)材料的顶部缺陷层,以将Bloch模式类似物限制在顶部界面处的表面等离激元模式。进行了详细的分析,以研究TMDC单层数量对传感性能的影响。波长(角度)询问提供了大约9650 nm / RIU(或231°/ RIU)的明显更高的灵敏度。除了灵敏度之外,还对全宽半高(FWHM)和品质因数(FOM)进行了严格的分析,据报道,FOM约为48,250 / RIU(38,500 / RIU)。

更新日期:2020-08-28
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