FIG. 1.

The versatile novel pre-mixing microfluidic stickers can be attached to any surface, including pre-existing microfluidics. (a) Classic linear and (b) novel compact spiral F-mixing sticker designs shown with standard inlet and outlet ports. (c) Stickers are capable of conforming to curved surfaces when using a PDMS layer as the base. (d) Due to the silicone-compatible dry adhesive, the sticker is able to seamlessly retrofit existing microfluidics to implement an on the spot mixing step where necessary. In this configuration, the outlet port of the pre-mixing sticker aligns with the inlet port of the retrofitted microfluidic.