Researchers have taken a close look at the flow of materials that have both liquid-like and solid-like states, such as toothpaste, mayonnaise, and ketchup, using both simulations and experiments.

Toothpaste, face creams, hair gel, mayonnaise and ketchup are household items that most people don't think twice about, but in terms of their flow behavior, they have unusual properties. They're all ...

How does toothpaste stay in its tube and not ooze out when we remove the cap? What causes seemingly solid ground to suddenly break free into a landslide? Defining exactly how soft materials flow and ...