Materials scientists are measuring the rolling friction of tiny, micrometer-sized particles. These measurements permit them to better understand everyday products such as concrete. For the first time, ...

How can a horde of active robots be automatically brought to a standstill? By arresting their dynamics in a self-sustained way. This phenomenon was discovered by physicists at Heinrich Heine ...

Researchers created a gas that doesn’t experience resistance or diffusion when cooled to freezing, proving it’s possible for ...

Powder tribology offers a way to understand particle interactions at their contact points, capturing both interparticle friction and surface adhesion. These interactions have been studied in ...

The measuring tip of an atomic force microscope with a specially designed holder in which a spherical particle is “trapped”. Lacquers, paint, concrete—and even ketchup or orange juice: Suspensions are ...