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How water flows near the superhydrophobic surface

Water has an unusual property when it flows closely to some specially designed surfaces—its speed isn't equal to zero, even in the layer that directly touches the wall. This means that liquid doesn't adhere to the surface, ...

dateOct 14, 2016 in Soft Matter
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Engineers stop soap bubbles from swirling

The spinning rainbow surface of a soap bubble is more than mesmerizing – it's a lesson in fluid mechanics. Better understanding of these hypnotic flows could bring improvements in many areas, from longer lasting beer foam ...

dateSep 13, 2016 in Soft Matter
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Innovative approach makes for a smoother ride

Moving through water can be a drag, but the use of supercavitation bubbles can reduce that drag and increase the speed of underwater vehicles. Sometimes these bubbles produce a bumpy ride, but now a team of engineers from ...

dateJun 16, 2016 in Soft Matter
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How much can a mode-2 wave move?

Look out over the ocean and you might get the impression that it's a mass of water acting as a single entity. However, the world's oceans are made up of layers of different densities, called stratifications, with complex ...

dateMay 24, 2016 in Soft Matter
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Daffodils help inspire design of stable structures

In 1940, the Tacoma Narrows Bridge collapsed in dramatic fashion, twisting in the wind before it snapped and plunged into the water below. As wind blew across the span, the flow induced oscillating sideways forces that helped ...

dateMay 10, 2016 in Soft Matter
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What guitarfish and aircraft wings have in common

Recent research by a team led by Jonathan Cox and Zhijin Wang shows how water flows through the nose of a guitarfish, a type of ray. The team discovered that vortex-like structures in their noses help the guitarfish to swim ...

dateMay 05, 2016 in Soft Matter
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Will raindrops stick to a spider web's threads?

If you go out after a rain, you may notice spider webs glistening with water droplets. The soggy webs resemble human-made meshes for fog collection: They both have thin fibers that collect water from droplets in the air.

dateApr 12, 2016 in Soft Matter
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Sharkskin actually increases drag

On an intuitive level, you'd expect a shark's skin to reduce drag. After all, the purpose of sharkskin-inspired riblets—the micro-grooved structures found in aircraft wings, wind turbine blades and Olympic-class swimsuits—is ...

dateMar 15, 2016 in Soft Matter
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Turbulence in bacterial cultures

Turbulent flows surround us, from complex cloud formations to rapidly flowing rivers. Populations of motile bacteria in liquid media can also exhibit patterns of collective motion that resemble turbulent flows, provided the ...

Bacteria used to create superfluids

(Phys.org)—A team of researchers with Université Paris-Sud and Université P.M. Curie/Université Paris-Diderot, both in France, has discovered that putting certain types of bacteria into an ordinary fluid, can cause it ...

Researchers simulate behavior of 'active matter'

Microspheres in a fluid, spinning in opposite directions, create flow patterns that affect other particles. Computer simulations show the particles self-assembling into different structures at different concentrations: bands, ...

Scientist provides new fluid dynamics insights

New calculations by a theoretical astrophysicist at The University of Alabama in Huntsville (UAH) provide tools that open a door to exploring the history of events in astrophysical flows and in plasma fusion devices described ...

Mathematicians model fluids at the mesoscale

When it comes to boiling water—or the phenomenon of applying heat to a liquid until it transitions to a gas—is there anything left for today's scientists to study? The surprising answer is, yes, quite a bit. How the bubbles ...

What makes flying snakes such gifted gliders?

Animal flight behavior is an exciting frontier for engineers to both apply knowledge of aerodynamics and to learn from nature's solutions to operating in the air. Flying snakes are particularly intriguing to researchers because ...

Egyptian mummies virtually unwrapped in Australia
Dark matter may be smoother than expected
Giant radio flare of Cygnus X-3 detected by astronomers
Cassini transmits first images from new orbit
Atlas of the RNA universe takes shape
Uncovering the secrets of water and ice as materials
ANU invention to inspire new night-vision specs
Swiss unveil stratospheric solar plane
New evidence for a warmer and wetter early Mars
Cosmic dust found in city rooftop gutters
Fossils of early tetrapods unearthed in Scotland
Gene "bookmarking" regulates the fate of stem cells
ExoMars orbiter images Phobos

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