The imbibition dynamics of aqueous solutions in paper substrates determines the
performance of all the operations integrated in analytical paper-based devices. In particular,
an accurate control of the flow rate is required for quantitative analysis such as viscometry.
This work experimentally investigates paper filling dynamics in order to find a strategy to
improve the precision and predictability of the imbibition process. The effect of performing
successive wetting–drying cycles on the same strips is explored, since we have discovered …