Monodisperse gas-filled microparticles from reactions in double emulsions |
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Authors: | Duncanson Wynter J Abbaspourrad Alireza Shum Ho Cheung Kim Shin-Hyun Adams Laura L A Weitz David A |
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Affiliation: | School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, United States. |
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Abstract: | We present a strategy for preparing size-controlled gas-filled microparticles using two aqueous components that chemically react to produce the gas. We use a dual-bore microfluidic device to isolate the reactants of two gas-producing reactions until they are encapsulated in the outer droplet. The reactants in the monodisperse droplets merge and produce the gas bubbles, which are stabilized with a surfactant and form the core of the microparticles. The number and size of the generated gas bubbles are governed by the gas-forming reaction used. Our versatile strategy can be applied to a wide range of gas-producing reactions. |
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