(A) Phase diagram for microfluidic flow-focusing geometry comparing results from Cubaud et al. (modified with permission from [57]. Copyright 2008, American Institute of Physics), Abate et al. (modified with permission from [21]. Copyright 2009 by the American Physical Society), Ward et al. [70] and Seo et al. ([73] – reproduced by permission of The Royal Society of Chemistry), and examples of observed flow patterns (B, C) in the jetting regime, and (D) in the dripping regime of the phase diagram ((B–D) modified with permission from [57]. Copyright 2008, American Institute of Physics).