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In this study, we analyze the combined effect of TMD/Perovskite/2D Material on the performance of SPR biosensor using Kretschman configuration. In order to optimize the parameters, we compare the results of each material falls in the family of TMD/Perovskite/2D respectively and finally applied in the proposed sensor. It is observed that the combined structure based on black phosphorus, a 2D material, Barium Titanate (BaTiO3) as a Perovskite material and Tungsten disulfide (WS2) as a TMD material respectively shows excellent performance in terms of a performance parameter of the sensor. Incident light wavelength is fixed of 633 nm and radiative properties of a multi‐layered structure are calculated by transfer Metrix method. Essential performance parameters like Figure of Merit (FOM), Sensitivity, Detection Accuracy obtained by using the standard formula given in the paper. The reported figure of merit (FoM) and sensitivity are 62.51/RIU and 370. respectively. The results obtained in this paper expect to prove a significant role in the biosensing field like DNA hybridization as well as for the application of Perovskite materials in biosensing. [ABSTRACT FROM AUTHOR]

We present a detailed design principle and propagation characteristics of channel Bragg-plasmon-coupled-waveguide. We have found that there is a significant change in the slope of the phase-velocity dispersion curve leading to an ultranarrow interaction bandwidth (∼765 pm) and group-velocity dispersion (GVD∼±4.5×104 ps/km-nm) that is an appreciably large GVD using a waveguide mode-coupling geometry in any region of the optical spectrum. The effect of waveguide parameters such as channel width, number of bilayers, etc. on a mode-coupling mechanism is also studied with significant emphasis on the propagation loss suffered by the supermodes of the structure. The proposed waveguide exhibits sensitivity as high as 7500 nm/RIU, thereby opening a route for biochemical sensing. [ABSTRACT FROM AUTHOR]

A self-referenced sensor based on coupled hybrid mode Tamm-plasmon-polariton (TPP) is proposed for detection of different blood group components. The geometry which has been investigated theoretically, is comprised of blood components sandwiched between two ‘metal-distributed Bragg reflectors (DBRs)’ exhibiting two distinguishable absorption peaks within the photonic band-gap (PBG) of DBR. The two absorption maxima are essentially due to excitation of one symmetric (Mode-I) and one anti-symmetric mode (Mode-II) within the PBG. Mode-I remains invariant for a change of blood constituents whereas Mode-II exhibits strong dispersive properties by virtue of significant presence within the sensing region. This gives rise to a hybrid self-reference scheme where the longer wavelength arm (Mode-II) varies significantly providing proper signature of a particular blood component. A straight line fit to the resonance wavelength shift gives rise to a sensitivity of ≈200 nm/RIU with the proposed architecture. The polarization dependence of the spectral shift of hybrid-mode resonance wavelengths for oblique incidence is also investigated and analyzed theoretically. The sharp absorption maxima facilitate precise detection with an improved detection accuracy of a particular blood component. A brief analysis to optimize the sensor design for enhanced sensitivity, as well as detection accuracy, has also been discussed. [ABSTRACT FROM AUTHOR]

• An SPR sensor proposed using Ti 3 C 2 T x MXene nanomaterial. • High sensitivity 190.22 (°/ RIU) is obtained using a single layer of Ti 3 C 2 T x MXene. • The penetration depth of the sensor is 1.52 times larger compared to a conventional sensor. The aim of the paper is to see the effect of new nanomaterial, i.e., MXene on sensing application. A surface plasmon resonance biosensor comprising of BK7 prism, MXene, transition metal dichalcogenides (TMDCs), black phosphorus (BP), and gold (Au) as a plasmonic material is proposed for sensing application in visible region. We have investigated and carried out detailed analysis to design the high-performance biosensor by exploiting the unique properties of Ti 3 C 2 T x MXene and black phosphorus. The performance of the biosensor is quantified in terms of sensitivity. The highest sensitivity 190.22 (° / R I U) is obtained using single layer of each nanomaterials. Proposed sensor offered penetration depth i.e., 1.52 times larger in compared to conventional sensor. Our contribution reveals potential application of combination of Black Phosphorus, Ti 3 C 2 T x MXene and TMDCs as a new type of biosensor providing promising applications in SPR biosensors. [ABSTRACT FROM AUTHOR]