High-Sensitivity Goos-Hänchen Shifts Sensor Based on BlueP-TMDCs-Graphene Heterostructure

Abstract

Surface plasmon resonance (SPR) with two-dimensional (2D) materials is proposed to enhance the sensitivity of sensors. A novel Goos–Hänchen (GH) shift sensing scheme based on blue phosphorene (BlueP)/transition metal dichalogenides (TMDCs) and graphene structure is proposed. The significantly enhanced GH shift is obtained by optimizing the layers of BlueP/TMDCs and graphene. The maximum GH shift of the hybrid structure of Ag-Indium tin oxide (ITO)-BlueP/WS2–graphene is −2361λ with BlueP/WS2 four layers and a graphene monolayer. Furthermore, the GH shift can be positive or negative depending on the layer number of BlueP/TMDCs and graphene. For sensing performance, the highest sensitivity of 2.767 × 107λ/RIU is realized, which is 5152.7 times higher than the traditional Ag-SPR structure, 2470.5 times of Ag-ITO, 2159.2 times of Ag-ITO-BlueP/WS2, and 688.9 times of Ag-ITO–graphene. Therefore, such configuration with GH shift can be used in various chemical, biomedical and optical sensing fields.

Coexistence of giant Goos–Hänchen shift and high reflectance in Dirac semimetal based multilayered structure

“…In Table 1, we have listed the maximum GH value and its corresponding reflectance in several multi-layered structures for comparison. 39,56–59 Therefore, different from previous studies, the structure designed here not only supports the substantial GH shift but also exhibits the exceptionally high reflectance, whose performance surpasses those of the existing structures. 31,33,38 This unusual behavior makes the BDS-based multilayered structure a potential candidate for high performance nanophotonic devices.…”

Numerical Study to Enhance the Sensitivity of a Surface Plasmon Resonance Sensor with BlueP/WS2-Covered Al2O3-Nickel Nanofilms

“…For Ag, λ P = 145.41 nm and λ C = 176.14 nm [33]. The transfer matrix method for the n-layer modeling and Fresnel equations is used throughout the numerical analysis.…”

Plasmonic nanostructure integrated two-dimensional materials for optoelectronic devices

“…Goos-Hänchen shift, which has been studied in the field of optical waveguide switch [187], high sensitive temperature sensors [188,189] and other fields [190] has been used to improve the sensitivity of bi-metal structure based sensor on graphene/hBN heterostructures [191]. Integrating plasmonic antenna to hyperbolic phonon polariton in hBN into a graphene p-n junction has been used for room temperature mid-infrared photodetection [192].…”