Have you ever noticed how a spilled cup of coffee leaves behind a telltale brown ring? While those stains might be annoying, the science behind them, known as the coffee ring effect, has sparked ...

Turns out, coffee stains and cutting-edge medical tests have quite a lot in common. A new at-home diagnostic technology developed by researchers at the University of California, Berkeley uses the same ...

(Nanowerk News) Previously, researchers of the University of Twente discovered that the well-known coffee-stain effect is caused by a remarkable mechanism, showing avalanche-like behavior of particles ...