Figure 4. Compartmentalization in polymer particles has been improved through the development of microfluidic techniques.
(A) Double emulsions with a highly controllable number and size of internal droplets can be produced with capillary microfluidic devices. (B) By using multiple injection tubes in a microcapillary device, distinct internal compartments with controlled stoichiometry can now be encapsulated within a single particle. (a) Adapted from reference 85. Copyright Wiley-VCH Verlag GmbH & Co. KGaA. Reproduced with Permission. (b) Adapted from reference 86. Copyright American Chemical Society.