Sensitivity enhancement of an SPR biosensor with a graphene and blue phosphorene/transition metal dichalcogenides hybrid nanostructure

Yue, Chong; Lang, Yaopu; Zhou, Xiao; Liu, Qinggang

doi:10.1364/ao.58.009411

Cited by 28 publications

(10 citation statements)

References 40 publications

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“…Subsequently, the 2D material of BlueP/TMDCs and graphene with monolayer and RI is shown as Table 1 [47,48]. The sensing medium is used for deionized (DI) water and its RI (n7) is obtained [43]:…”

Section: Design Consideration and Mathematical Modelmentioning

confidence: 99%

“…Subsequently, the 2D material of BlueP/TMDCs and graphene with monolayer and RI is shown as Table 1 [ 47 , 48 ].…”

Section: Design Consideration and Mathematical Modelmentioning

confidence: 99%

“…The thickness and dielectric constant of each layer are set as d k and ε k ( ε k = n k 2 ) ( k = 1,2,…7). In order to analyze the reflectivity ( R p ) and phase ( ψ p ), the transfer matrix method (TMM) and the Fresnel equation based on n -layer model are used [ 47 ]. The SPR sensor is composed of parallel stacking in Z direction perpendicular to the sensing interface.…”

Section: Design Consideration and Mathematical Modelmentioning

confidence: 99%

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

Han

Pan

et al. 2020

Sensors

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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.

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Section: Design Consideration and Mathematical Modelmentioning

confidence: 99%

“…Subsequently, the 2D material of BlueP/TMDCs and graphene with monolayer and RI is shown as Table 1 [ 47 , 48 ].…”

Section: Design Consideration and Mathematical Modelmentioning

confidence: 99%

Section: Design Consideration and Mathematical Modelmentioning

confidence: 99%

See 1 more Smart Citation

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

Han

Pan

et al. 2020

Sensors

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“…The study of sensitivity enhancement with vdW materials has become a hot topic in the last decade, since they are promising both as immobilization layers [ 13 , 14 , 15 , 16 , 17 ] and as optical sensitivity enhancing layers [ 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 ]. Furthermore, additional layers of graphene or other materials can protect the metal from the environment, thereby improving the stability of the sensor structure [ 29 ].…”

Section: Introductionmentioning

confidence: 99%

Optical Anisotropy and Excitons in MoS2 Interfaces for Sensitive Surface Plasmon Resonance Biosensors

et al. 2022

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The use of ultra-thin spacer layers above metal has become a popular approach to the enhancement of optical sensitivity and immobilization efficiency of label-free SPR sensors. At the same time, the giant optical anisotropy inherent to transition metal dichalcogenides may significantly affect characteristics of the studied sensors. Here, we present a systematic study of the optical sensitivity of an SPR biosensor platform with auxiliary layers of MoS2. By performing the analysis in a broad spectral range, we reveal the effect of exciton-driven dielectric response of MoS2 and its anisotropy on the sensitivity characteristics. The excitons are responsible for the decrease in the optimal thickness of MoS2. Furthermore, despite the anisotropy being at record height, it affects the sensitivity only slightly, although the effect becomes stronger in the near-infrared spectral range, where it may lead to considerable change in the optimal design of the biosensor.

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“…The prism coupler having greater RI gives sharp resonance curves in contrast to lower values coupler prism. But the BK7 prism with lower RI for SPR sensor gives better sensitivity [31]. The coming figure 4 gives an idea about the outcomes of inserting Zinc sulfide and Black phosphorus films over the conventional biosensor with RI at 1.33 and 1.335.…”

Section: Resultsmentioning

confidence: 99%

Zinc sulfide, silicon dioxide, and black phosphorus based ultra-sensitive surface plasmon biosensor

et al. 2022

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The optical biosensor is the emerging research area in the field of bio-photonics. The black phosphorus zinc sulfide-based hybrid configuration is suitable for implementing and analyzing ultrasensitive biosensors. Ag/Zinc sulfide/silicon dioxide/black phosphorus-based biosensor has been implemented in the proposed work using the modified Kretschmann configuration. The sensitivity improvement of the designed SPR sensor is analyzed in the different arrangements of the layers. The thickness of the layers of all the materials has been optimized. The thickness of the Ag metal layer is optimized and taken as 45 nm. The sensitivity and quality factor measured here is as high as 664.6°/RIU and 200 at 1.37 refractive index-the P-polarized light source of 633nm wavelength. The proposed biosensor confirms tremendous growth in terms of sensitivity, detection accuracy, and quality factor compared with the traditional SPR sensors. Zinc sulfide has multiple applications in the sensing fields, like sensors based on UV rays, lasers, and gas.

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Sensitivity enhancement of an SPR biosensor with a graphene and blue phosphorene/transition metal dichalcogenides hybrid nanostructure

Cited by 28 publications

References 40 publications

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

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

Optical Anisotropy and Excitons in MoS2 Interfaces for Sensitive Surface Plasmon Resonance Biosensors

Zinc sulfide, silicon dioxide, and black phosphorus based ultra-sensitive surface plasmon biosensor

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