Figure 3. Conception of the biosensor production from sensor
preparation to working principle
We employed wax-printing technology to create the color scale which can
be used for visual evaluation of measurement result, color-corrected and
calibrated by X-Rite eXact device (Figure 4 a,b) on the biosensor
surface.
Thus, we prepared 50 samples of titania substrates and checked their
sensitivity to hydrogen peroxide, and the reproducibility of the
analysis. As you can see in Figure 4c, under optimum printing conditions
it is possible to achieve high repeatability of thickness and stability
of optical response. We applied the same amount of hydrogen peroxide
with all 50 samples and then the optical response was recorded. The
experiment shows that our average standard deviation does not 0.07 in
relative intensity, which is a valid indicator of repeatability.