Fig. 6
a Schematic diagram of a PDMS-based microfluidic device using DMC as the continuous fluid in which water is partially soluble. Droplet shrinkage is observed for an initial concentration of Na-alginate of 0.5 wt%. b Micrograph of Ca-alginate hydrogel microparticles collected in an aqueous solution of CaCl2. Figure reprinted with permission from Reference [39]. Copyright 2008 American Chemical Society