Multiple emulsions created using jetting and other techniques

摘要: The present invention generally relates to emulsions, and more particularly, multiple emulsions. In one aspect, emulsions are formed by urging a fluid into channel, e.g., causing the enter channel as "jet." Side channels can be used encapsulate with surrounding fluid. some cases, fluids may flow through collinearly before emulsion droplets formed. fluidic also, in certain embodiments, include varying degrees of hydrophilicity or hydrophobicity. As examples, relatively hydrophilic upstream an intersection (or other region within channel) hydrophobic downstream intersection, vice versa. average cross-sectional dimension change, at intersection. For instance, increase Surprisingly, small dimension, combination change delay droplet formation stream collinearly-flowing under conditions; accordingly, point which readily controlled channel. from collinear near) single location addition, unexpectedly, systems such those described herein that difficult impossible using techniques, low surface tension, viscous fluids, viscoelastic fluids. Other aspects directed methods making systems, kits involving created like.