微流控技术可生成大小均一、形状可控的Janus微液滴（Janus：罗马神话中的两面神），固化后可制备各向异性的Janus微颗粒，Janus液滴的形状和构成也赋予了其丰富的输运特性，在众多领域具有广泛的研究价值和应用前景。Janus液滴微流控技术的全面发展和应用需依赖于对Janus微液滴生成与输运现象的根本认识，而目前相关研究非常有限。本项目将首次采用三维直接数值模拟方法研究Janus液滴的微流控生成与输运，结合高速摄影的实验观测，揭示其中的流动机理和操控规律，并探讨通道结构、流体性质、界面张力、流动参数等因素的影响。研究将增强对Janus液滴微流控技术的深入了解和精确预测，为Janus微液滴的按需生成和精确操控提供理论基础和定量依据；研究结果将指导Janus液滴微流控装置的设计、优化和创新，拓展Janus液滴的应用范围和发展前景。

Droplet microfluidic technique can produce Janus compound microdroplets with uniform size and controllable shape (Janus: two-faced god in the Roman mythology). Anisotropic functional Janus microparticles can be prepared by curing the Janus microdroplets. The shape and composition of Janus microdroplet also give it rich transport properties. Janus microdroplets have extensive research value and application prospect in many fields. Comprehensive developments and applications of Janus microfluidic droplet technology rely on a fundamental understanding of the formation and transport of Janus microdroplets, however, current research efforts are limited. In this project, we will, for the first time, use a three-dimensional direct numerical simulation method to study the microfluidic formation and transport of Janus droplets, combining with experiments using high-speed photography, to reveal the underlying flow mechanisms and control laws, and to explore the effects of microchannel geometries, fluid properties, interfacial tensions and flow parameters. The study will enhance the in-depth understanding and accurate prediction of Janus droplet microfluidic technology, providing theoretical and quantitative basis for on-demand generation and precise control of Janus microdroplets. The results can guide the design, optimization and innovation of Janus droplet microfluidic devices and expand the application range and development prospect of Janus microdroplets.