A Numerical Approach to Design the Kretschmann Configuration Based Refractive Index Graphene-MoS_(2) Hybrid Layers With TiO_(2)-SiO_(2) Nano for Formalin Detection  

作　　者：Md.Biplob HOSSAIN Tamanna TASNIM Lway F.ABDULRAZAK Md.Masud RANA Md.Rabiul ISLAM 

机构地区：[1]Department of Electrical and Electronic Engineering,Jashore University of Science and Technology,Jashore-7408,Bangladesh [2]Department of Electrical and Electronic Engineering,Rajshahi University of Engineering&Technology,Rajshahi-6402,Bangladesh [3]Department of Computer Science,Cihan University Slemani,Sulaimaniya-46001,Iraq [4]School of Electrical Computer and Telecommunications Engineering,Faculty of Engineering and Information Sciences,University of Wollongong,NSW 2522,Australia

出　　处：《Photonic Sensors》2020年第2期134-146,共13页光子传感器（英文版）

摘　　要：In this paper,a Kretschmann configuration based surface plasmon resonance(SPR)sensor is numerically designed using graphene-MoS_(2) hybrid structure TiO_(2)-SiO_(2) nano particles for formalin detection.In this design,the observations of SPR angle versus minimum reflectance and SPR frequency(FSPR)versus maximum transmittance(Tmax)are considered.The chitosan is used as probe legend to perform reaction with the formalin(40%formaldehyde)which acts as target legend.In this paper,both graphene and MoS_(2) are used as biomolecular acknowledgment element(BAE)and TiO_(2) as well as SiO_(2) bilayers is used to improve the sensitivity of the sensor.The numerical results show that the variation of FSPR and SPR angles for inappropriate sensing of formalin is quite insignificant which confirms the absence of formalin.On the other hand,these variations for appropriate sensing are considerably significant that confirm the presence of formalin.At the end of this article,the variation of sensitivity of the proposed biosensor is measured in corresponding to the increment of a refractive index with a refractive index step 0.01 refractive index unit(RIU).In inclusion of TiO_(2)-SiO_(2) bilayers with graphene-MoS_(2),a maximum sensitivity of 85.375%is numerically calculated.

关 键 词：Surface plasmon resonance formalin detection GRAPHEME refractive index sensitivity 

分 类 号：TQ127.11[化学工程—无机化工] TB383[一般工业技术—材料科学与工程]