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- W4386319155 abstract "Localized surface plasmonic resonance (LSPR) biosensing using optical fibers has gained popularity due to its label-free approach and high sensitivity to changes in the nanoparticle surface's local index of refraction. However, improving sensitivity remains a challenge. In this study, a two-step approach was employed to fabricate a composite structure using gold nanoparticles and monolayer graphene (Gr-AuNPs). The combination of AuNPs and graphene membrane demonstrated high potential for Surface-enhanced Raman scattering (SERS) and surface plasmonic resonance (SPR) fiber sensors. The Gr-AuNPs sensor successfully detected R6G molecules with a low detection limit of 10-12 M, indicating promising SERS activity. Numerical simulations confirmed that the graphene generated densely hot spots in the nanogap region between plasmonic layers. It's interesting that the proposed SPR-SERS Sensor can detect both glucose and thiram. This demonstrates the sensors practicality and can help with a basic environmental need to find leftover pesticides in the soil. The combination of SPR-SERS dual-mode detection provides more options for detecting and verifying data, increasing the precision and repeatability of experiments." @default.
- W4386319155 created "2023-09-01" @default.
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- W4386319155 date "2024-01-01" @default.
- W4386319155 modified "2023-10-18" @default.
- W4386319155 title "A Two-Fold SPR-SERS Sensor Utilizing Gold Nanoparticles and Graphene Thin Membrane as a Spacer in a 3D Composite Structure" @default.
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- W4386319155 doi "https://doi.org/10.1016/j.saa.2023.123331" @default.
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