Floating a boat on the underside of a liquid

A team of researchers from Institut Langevin and Sorbonne Université has shown that it is possible to float boats on both the top and underside of a suspended fluid. In their paper published in the journal Nature, the group ...

How to get rid of the coffee-stain effect

The coffee-stain effect is a well-known effect in physics and daily life in which a dark-colored edge remains when a fluid containing particles evaporates. This is caused by an "avalanche" of particles moving to the outer ...

Rethinking Brownian motion with the 'Emperor's New Clothes'

In the classic fairy tale, "The Emperor's New Clothes," Hans Christian Andersen uses the eyes of a child to challenge conventional wisdom and help others to see more clearly. In similar fashion, researchers at the University ...

Tracking flight trajectory of evaporating cough droplets

The ongoing COVID-19 pandemic has led many researchers to study airborne droplet transmission in different conditions and environments. The latest studies are starting to incorporate important aspects of fluid physics to ...

Spider-Man-style robotic graspers defy gravity

Specially designed vacuum suction units allow humans to climb walls. Scientists have developed a suction unit that can be used on rough surfaces, no matter how textured, and that has applications in the development of climbing ...

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