Fig. 1: Passive generation of water-water-oil double emulsions. | Microsystems & Nanoengineering

Fig. 1: Passive generation of water-water-oil double emulsions.

From: Oil-mediated high-throughput generation and sorting of water-in-water droplets

Fig. 1

a Schematic of the passive method to generate water-water-oil double emulsions in a multi-inlet flow-focusing channel. b Comparison of the double-emulsion generation without and with a spacing stream. Scale bar: 200 μm. c Image of the double-emulsion drops generated at flow rates of 200 μL/h (DEX-rich), 600 μL/h (PEG-rich) and 3000 μL/h (oil). Scale bar: 100 μm. d The morphology of double-emulsion drops formed at different core-shell flow-rate ratios. The flow rate of oil is set constant at 3000 μL/h, while the flow rates of DEX-rich:PEG-rich phases are 100:700, 200:600, 400:400, 600:200 and 700:100 μL/h, respectively. Scale bar: 20 μm. e A plot of the core droplet diameter and generation frequency as the oil flow rate increases from 2000 to 10,000 μL/h

Back to article page