Fig. 1. Reflectivity and phase versus refractive index at incident angle of 70.58°

Fig. 2. Reflectivity and phase versus sample thickness at incident angle of 70.58°

Fig. 3. Experimental device of SPRI

Fig. 4. Physical map of experimental device

Fig. 5. Reflectivity and phase diagrams during water droplet evaporation. (a)(c)(e) Intensity diagrams; (b)(d)(f) phase diagrams

Fig. 6. Rreflectivity and phase versus time during water droplet evaporation

Fig. 7. Digital holograms, intensity images, and phase images recorded at 0 and 270 s. (a) Digital hologram at 0 s; (b) reconstructed intensity image at 0 s; (c) reconstructed phase image at 0 s; (d) three-dimensional (3D) representation of (b); (e) 3D representation of (c); (f) digital hologram at 270 s; (g) reconstructed intensity image at 270 s; (h) reconstructed phase image at 270 s; (i) 3D representation of (g); (j) 3D representation of (h)

Fig. 8. PGP-1 phase versus time

Fig. 9. Standard curve of PGP-1 reaction

Fig. 10. Calculated curve of binding rate for PGP-1 reaction

Fig. 11. PGP-2 phase versus time

Fig. 12. Standard curve of PGP-2 reaction

Fig. 13. Calculated curve of binding rate for PGP-2 reaction