 This research has developed a novel open-channel droplet microfluidic system which can generate hundreds of droplets from a single channel without requiring any external power source. This system is capable of performing various tasks including droplet splitting, transport, incubation, mixing, and sorting. Additionally, it allows for direct access to the droplets via physical tools such as tweezers and styli, making it easier to manipulate them. This system could be used for a wide range of applications from chemical analysis to material science and biology. This article was authored by Jianwei Kor, Oryen Li, Jean Berthier, and others.