. Furthermore, we quantified the division ratio rdiv of the A:B-droplet using image processing (see Supplemental Note S3) (Figures and). rdiv is 0 if the A-and B-droplets are fully mixed in the A:B-droplets, and 1 if the A:B-droplets are completely divided into A-and B-droplets. The results demonstrated that the increasing rate of rdiv became slower with decreasing 𝑐 ' "# or increasing