 Thin liquid films on slippery surfaces can be controlled by applying an electric field. Under this field, the films de-wet into smaller droplets, which then spread and coalesce with other droplets to reform a single film. This process can be repeated many times, allowing for the formation and destruction of the film at will. This article was authored by Bidisha Bhatt, Shivam Gupta, Vasudevan Sumanti, and others.