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(A) An image highlighting the flow focusing geometry of the microfluidic device, including the 14 × 17 μm junction where the monodispersed double emulsions were formed. (B) Confocal microscopy images of the resulting double emulsion at 40× and 100× magnification for the large and inset images, respectively. The images show emulsions that are visually uniform in size. Scale bars: 25 μm (large image) and 2.5 μm (inset)
