Ag-Ni bimetallic film on CaF2 prism for high sensitive surface plasmon resonance sensor
Authors: Nisha Ananthan , Maheswari Pandaram , Subanya Santhanakumar , Anbarasan Ponnusamy Munusamy , Rajesh Karuppaiya Balasundaram , Jaroszewicz Zbigniew 
Published: December 2021

We present a surface plasmon resonance (SPR) structure based on Kretschmann configuration incorporating bimetallic layers of noble (Ag) and magnetic materials (Ni) over CaF2 prism. Extensive numerical analysis based on transfer matrix theory has been performed to characterize the sensor response considering sensitivity, full width at half maxima, and minimum reflection. Notably, the proposed structure, upon suitably optimizing the thickness of bimetallic layer provides consistent enhancement of sensitivity over other competitive SPR structures. Hence we believe that this proposed SPR sensor could find the new platform for the medical diagnosis, chemical examination and biological detection. Full Text: PDF ReferencesJ. Homola, S.S. Yee, G. Gauglitz, "Surface plasmon resonance sensor based on planar light pipe: theoretical optimization analysis", Sens. Actuators B Chem. 54, 3 (1999). CrossRef X.D. Hoa, A.G. Kirk, M. 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