What stops flows in glassy materials?

Spatial correlations between slow-dynamics (red ellipses) and low-structural-entropy (light blue) regions in translational and rotational motion of colloidal ellipsoids with different aspect ratios. Scale bar: 20 μm. Credit: WANG Yuren Glasses have a liquid-like disordered structure but solid-like mechanical properties. This leads to one of the central mysteries of glasses: Why don’t they flow like […]

Determining Dissolved Organic Carbon Flows into the Gulf of Alaska

Amid ongoing climate change, understanding how and where carbon is moving across ecosystems has become a top research priority. This type of “carbon accounting” helps scientists determine where the planet is sequestering and releasing atmosphere-warming carbon compounds and is especially important at the boundaries between different ecosystems. In a new study, Edwards et […]

Ultra-fast gas flows through tiniest holes in 2-D membranes

Researchers identify ultra-fast gas flows through atomic-scale apertures in 2D membrane and validate a century-old equation of fluid dynamics. Credit: N Hassani & M N-Amal, Shahid Rajee University Researchers from the National Graphene Institute at the University of Manchester and the University of Pennsylvania have identified ultra-fast gas flows through the tiniest holes in one-atom-thin […]

Characterizing complex flows in 2D bubble swarms — ScienceDaily

When swarms of bubbles are driven upwards through a fluid by their buoyancy, they can generate complex flow patterns in their wake. Named ‘pseudo-turbulence,’ these patterns are characterised by a universal mathematical relationship between the energy of flows of different sizes, and the frequency of their occurrence. This relationship has now been widely observed through […]

Wildfires can cause dangerous debris flows

Time lapse images of a 2019 debris flow in the burn scar of the Holy Fire near Lake Elsinore. Credit: James Guilinger/UCR Wildfires don’t stop being dangerous after the flames go out. Even one modest rainfall after a fire can cause a deadly landslide, according to new UC Riverside research. “When fire moves through a […]

In specially coated tubes, the more viscous a liquid is, the faster it flows

Drops of honey on a hydrophobic surface. Credit: Aalto University It’s widely known that thick, viscous liquids—like honey—flow more slowly than low-viscosity liquids, like water. Researchers were surprised to find this behavior flipped on its head when the liquids flow through chemically coated capillaries. In fact, through these specially coated tubes, liquids a thousand times […]

When honey flows faster than water — ScienceDaily

It’s widely known that thick, viscous liquids — like honey — flow more slowly than low-viscosity liquids, like water. Researchers were surprised to find this behaviour flipped on its head when the liquids flow through chemically coated capillaries. In fact, through these specially coated tubes, liquids a thousand times more viscous flow ten times faster. […]