Fig. 6.

(a) Reference spectra of the different MPs polymers with that of silicon filter (Si, in black) from which the binary orthogonal spectral filters have been constructed. (b) Image of the silicon filter (size: 10 mm x 10 mm) after passing it through an aqueous medium containing a mixture of 6 MPs. (c) View from the microscope camera a FOV of the different MP polymers collected by a silicon substrate. A magnification is performed on the region of interest (white frame in c) to obtain (d).