Researchers make sand that flows uphill
Engineering researchers at Lehigh University have discovered that sand can actually flow uphill.
Condensed Matter
Sep 20, 2023
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121
News tagged with granular material
How forest density slows granular flows
One way to reduce the damage caused by avalanches in the mountains is to place obstacles in their path. These obstacles can be artificial barriers or natural forests. Knowing how the avalanche interacts with obstacles is ...
Leonardo da Vinci's forgotten experiments explored gravity as a form of acceleration
Engineers from Caltech have discovered that Leonardo da Vinci's understanding of gravity—though not wholly accurate—was centuries ahead of his time.
General Physics
Feb 13, 2023
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3186
When particles move: A deep dive into the relationship between cohesion and erosion
Landslides are one striking example of erosion. When the bonds that hold particles of dirt and rock together are overwhelmed by a force—often in the form of water—sufficient to pull the rock and soil apart, that same ...
General Physics
Aug 3, 2022
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61
Novel solution to drastically reduce world's largest waste stream
After water, sand is the most exploited natural resource on the planet. However, its extraction from seas, rivers, beaches and quarries has an impact on the environment and surrounding communities. A new study by researchers ...
Earth Sciences
Apr 12, 2022
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80
The science of ants' underground cities
Picture an anthill. What do you see? A small mound of sand and crumbly dirt poking up through the lawn? A tiny hole disappearing into the ground? A few ants scrambling around busily. Not very impressive, right?
Plants & Animals
Aug 23, 2021
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1281
Nailing it: Caltech engineers help show that InSight lander probe can hammer itself into martian soil
On November 26, NASA's InSight lander will complete its six-and-a-half month journey to Mars, touching down at Elysium Planitia, a broad plain near the Martian equator that is home to the second largest volcanic region on ...
Space Exploration
Nov 22, 2018
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14
Helical locomotion in a granular medium by a 'sand robot'
Moving within granular media such as sand is a trick that occurs not only in science-fiction movies. The sandfish lizard, which lives in the desert, is also able to perform this task. In order to do so, this lizard behaves ...
Condensed Matter
Aug 24, 2017
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3
Physicists discover mechanism behind granular capillary effect
Dipping a tube into a container filled with water will make the water rise in the tube. This phenomenon is called liquid capillarity. It is responsible for many natural and technical processes, for example the water absorption ...
Condensed Matter
May 24, 2017
2
294
Better than milk on breakfast cereals: New precision coating method for industrial granular material
Deposition of a thin film catalyst of a predicted thickness on the surface of novel hydrogen storage microbeads helps release hydrogen.
Condensed Matter
Nov 24, 2016
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