Theoretical Analysis of Diffraction Grating-Based SPR Sensor Using the Rigorous Coupled Wave Analysis Method
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| Titel: | Theoretical Analysis of Diffraction Grating-Based SPR Sensor Using the Rigorous Coupled Wave Analysis Method |
|---|---|
| Autoren: | Suryansh Saxena, Yagyasha Rastogi, Navneet K. Sharma |
| Quelle: | Plasmonics. 20:7495-7507 |
| Verlagsinformationen: | Springer Science and Business Media LLC, 2025. |
| Publikationsjahr: | 2025 |
| Beschreibung: | Surface plasmon resonance (SPR) sensors are crucial for highly sensitive, label-free detection in various applications, including biosensing and environmental monitoring. This study investigates the sensitivity and performance of diffraction grating-based SPR sensors using rigorous coupled wave analysis (RCWA). The analysis focuses on single- and bi-layered metallic structures composed of copper, gold, and silver. The results reveal that single-layer silver sensors exhibit the highest sensitivity of 169.37°/RIU followed by Au and Cu with a sensitivity of 168.4°/RIU and 167.9°/RIU respectively. Further, to enhance the stability and reliability, bilayered configurations were introduced, incorporating protective coatings of one metal over the other. Among the bilayered configurations, Ag-Cu demonstrated the greatest sensitivity of 175°/RIU followed by Ag-Au with a sensitivity of 173.25°/RIU and Au-Cu with the sensitivity of 168.5°/RIU. This study establishes the potential of bi-metallic SPR sensors for achieving superior sensitivity and stability, highlighting their applicability in advanced detection systems. The novel insight into the interplay between material properties and sensor performance offers a roadmap for designing next-generation plasmonic sensors. |
| Publikationsart: | Article |
| Sprache: | English |
| ISSN: | 1557-1963 |
| DOI: | 10.1007/s11468-025-02799-7 |
| Rights: | CC BY |
| Dokumentencode: | edsair.doi...........4f46b697cd7fb0c8ab07b9e2639fe887 |
| Datenbank: | OpenAIRE |
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