The researchers studied how an electric field affects tiny bubbles on the surface of water-repellent particles during air flotation. They used computer simulations to see how the bubbles changed in size and behavior with and without the electric field. The results showed that the electric field made the bubbles smaller by increasing their movement and reducing the stickiness of water molecules. This means that using an electric field can help make air flotation more effective in separating water-repellent particles, which could be useful for improving this technology in real-world applications.