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- W4376128557 abstract "Abstract This study theoretically proposes a highly sensitive plasmonic biosensor comprising a silver film, perovskite nanosheets, bi-layer silicon nanosheets, and a graphene overlayer. The introduction of perovskite-graphene hybrid structure can reduce the optical reflectivity of the proposed biosensor configuration so that photons are converted into energy to support surface plasmon resonance (SPR) enhancement. Unlike conventional angular modulation, our proposed biosensor configuration is designed using phase modulation, offering sensitivity enhancements as high as 3 orders of magnitude. Excellent biosensing performances have been examined by optimizing the silver film thickness and the number of perovskite nanosheets. Considering a tiny refractive index change of 0.0012 refractive index unit (RIU) caused by biomolecules adsorption behavior, the optimal plasmonic biosensor configuration of 46-nm silver film–5.7-nm silicon interlayer-1-layer CH 3 NH 3 PbI 3 perovskite film–0.7-nm silicon interlayer-1-layer graphene can produce the highest detection sensitivity of 1.2314 × 10 5 degree/RIU. In addition, an excellent linear response in the differential phase can be obtained, as the refractive index variation of the sensing interface can be as low as 10 −6 RIU, showing great potential in performing ultrasensitive biosensing." @default.
- W4376128557 created "2023-05-12" @default.
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- W4376128557 date "2023-06-01" @default.
- W4376128557 modified "2023-10-18" @default.
- W4376128557 title "Highly sensitive plasmonic biosensor enhanced by perovskite-graphene hybrid configuration" @default.
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- W4376128557 doi "https://doi.org/10.1088/2040-8986/acd463" @default.
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