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Updated: Oct 5, 2025
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Published on: March 2, 2016
Tuning and Sensitivity Improvement of Bi-Metallic Structure-Based Surface Plasmon Resonance Biosensor with 2-D -Tin
Natarajan Sathya1, Bhishma Karki2, Kantilal Pitambar Rane3
1Engineering Department, Scientific Society Group, Tamilnadu, India.
Abstract:
This manuscript aims to analyze the effect of tin selenide (SnSe) on the sensing application of SPR biosensors. Tin selenide is the 2-dimensional transition metal dichalcogenide material. The proposed multilayer structure has a BK7 prism, a bimetallic layer of Au, tin selenide, and a graphene layer. Tin selenide is used to improve the performance parameters of the biosensor. The nanosheet is placed in between two layers of gold (Au) in the Kretschmann configuration. The proposed configuration has a maximum sensitivity of 214 deg/RIU, 93.81% higher than the conventional sensor. The performance parameters like full width half maximum, detection accuracy, and quality factor have been analyzed. The material is an air-stable 2-D. The proposed sensor is suitable for the analysis of chemical, medical, and biological analytes.
