Surface plasmon resonance sensors: Temperature effects.

In this paper, we present a detailed study of the temperature effect (0 − 100 ° C), on the plasmonic resonance and sensitivity of a surface plasmon resonance (SPR) to the medium detection refraction index change. We examine this SPR based on the Kretschmann multilayer configuration constituted by a BK7 prism, an Ag/Au bimetallic layer deposited on TiO 2 /SiO 2 and a BlueP/MoS 2 heterostructure monolayer. First, a simple numerical calculation is provided to analyze the temperature effect on the plasmonic resonance. The model take into account the dependence on temperature of the refractive index of different materials composing the investigated structures. The main idea is to show how the sensitivity of the SPR based sensor is influenced according to operating temperature which is critical parameter when considering bio-sensing applications. [Display omitted] • Study of the temperature effects on the BK7/TiO 2 /SiO 2 /Ag/Au/BlueP-MoS 2 /Sensing-medium biosensor. • Linear shift of plasmon resonance as a function of simultaneously measured temperature and refractive index. • The temperature coefficient sensitivity reaches as high as -1020.41 ppm/°C. • Obtained a sensitivity of 345.42deg/RIU, a value 139.9% higher than the conventional design. • The sensor is able to detect the analyte for a large variation of the refractive index, even at low temperatures. [ABSTRACT FROM AUTHOR]