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Abstract
This paper presents the design and full-wave analysis of a label-free biosensor based on a plasmonic nanodisk resonator with a radius of 350 nm to sense the concentration of water-soluble Bovine Serum Albumin (BSA) protein. The finite element method (FEM) has been used to analyze its optical characteristics and sensing performance. The designed biosensor has a compact structure with a higher quality factor, narrower FWHM, higher sensitivity, and larger FOM compared to similar plasmonic refractive-index sensors.
Acknowledgements
We inform you that we are employed at an academic institution where research or education is the entity’s primary function, and there isn’t any official fund to report this manuscript. The authors have no relevant financial or non-financial interests to disclose.
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