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Keywords:

  • emulsification;
  • metal oxides;
  • microcapsules;
  • microfluidics;
  • polymers
Thumbnail image of graphical abstract

Polymeric onions: A facile method to produce monodisperse multiple emulsion drops of high order is developed using a capillary microfluidic device. Coaxial multiphase flows are stabilized by confinement in microcapillary and emulsified to multiple emulsion drops. The breakup of coaxial interfaces, triggered by the core-drop, facilitates the making of multiple emulsion drops of onionlike configuration.