Abstract
The generation of uniform droplets has been extensively investigated owing to its profound potentials both in scientific research and engineering applications. Although various methods have been put forward to expand this area, new innovations are still needed to improve the technical convenience and save instrumental cost. In this feature article, we highlight an interfacial emulsification technique that we developed in the past several years. This technique serves as a platform for preparing uniform droplets that are formed on the air-liquid interface of the continuous phase based on interfacial shearing. Three specific aspects of interfacial emulsification are reviewed, including its basic design and principle, the preparation of droplets with controllable size and adjustable components, and practical applications of the method in bioanalysis, microreactors, and particle synthesis. Compared to other droplet generation methods, several attractive advantages and perspectives for further development have been summarized.
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