Figure 3.

Droplet drug library production for toxicity screening

(A) Schematic side view of the microfluidic channel geometry that allows for the droplet drug library production.

(B) Top view of the chip used for creating secondary droplets.

(C) Schematic side view of the steps toward droplet fusion: secondary droplets with a content of interest are trapped in secondary traps next to the primary trapped droplets, subsequently fusion on droplets is induced.

(D) Photographs of droplets doing the steps shown in (c). Scale bar represents 400 μm.

(E) Schematic of the consecutive steps toward addition of multiple secondary droplets to primary droplets.