We propose a structure that uses surface plasmon resonance (SPR) of two-dimensional (2D) materials to enhance the sensitivity of the biosensor. When the GH shift is used as an interrogation to the biosensor, since SPR can greatly enhance and control the Goos-Hänchen (GH) shift, the biosensor will have excellent sensitivity. Theoretical research results show that by adjusting the structural parameters, a huge GH shift and a sensitivity that is hundreds of times higher than that of ordinary biosensors can be obtained. This will help research in areas such as basic biology and environmental monitoring.
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