Fig. 1. Schematic of the liquid prism. (a) Plane graph; (b) stereogram

Fig. 2. Light path diagram for probing

Fig. 3. Dependence of the (a) real part and (b) imaginary part of dielectric constant of silver film on the temperature at different wavelengths

Fig. 4. Influence of the temperature variation of dielectric constant of silver film on SPR curve

Fig. 5. (a) Thermo-optical coefficient of the BK7 glass as a function of wavelength; (b) refractive index of the BK7 glass as a function of temperature at different wavelengths

Fig. 6. SPR curves of silver film and BK7 glass substrate as a function of temperature

Fig. 7. Refractive index of water as a function of temperature at different wavelengths

Fig. 8. SPR curves of silver film, BK7 glass substrate and deionized water at different temperatures

Fig. 9. (a) SPR curves of the deionized water at different temperatures; (b) relationship between the refractive index and temperature