We fabricate complex emulsions with irregular shapes in the microscale by a simple but effective multiplex coaxial flow focusing process. A multiphase cone-jet structure is steadily formed, and the compound liquid jet eventually breaks up into Janus microdroplets due to the perturbations propagating along the jet interfaces. The microdroplet shapes can be exclusively controlled by interfacial tensions of adjacent phases. Crescent-moon-shaped microparticles and microcapsules with designated structural characteristics are further produced under ultraviolet light of photopolymerization after removing one hemisphere of the Janus microdroplets. These complex emulsions have potential applications in bioscience, food, functional materials, and controlled drug delivery.

中文翻译：

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多重同轴流聚焦制备不规则形状复杂乳液的光聚合

我们通过简单但有效的多重同轴流聚焦工艺在微观尺度上制造具有不规则形状的复杂乳液。稳定地形成多相锥形射流结构，由于沿射流界面传播的扰动，复合液体射流最终分裂成 Janus 微滴。微滴形状可以完全由相邻相的界面张力控制。去除Janus微滴的一个半球后，在光聚合的紫外光下进一步产生具有指定结构特征的新月形微粒和微胶囊。这些复杂的乳液在生物科学、食品、功能材料和受控药物输送方面具有潜在的应用。