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Tag Archives: Soft matter
Active Particles Map to Passive Random Walks
Researchers make systems of self-propelled particles produce the same large-scale dynamics as passive-particle systems. Continue reading
Unjammed Emulsions Collapse to Liquids
An emulsion’s rigidity disappears when the droplets’ random thermal motion overcomes the confining pressure that binds them. Continue reading
Some Granular Columns Weigh Too Much
Particles packed inside a cylinder can experience a downward force from the walls, resulting in an apparent weight increase. Continue reading
Ants know the secret to avoiding traffic jams
In a confined environment, ants divide labor to optimize nest excavation. Continue reading
When the ants go marching in
Ants in a confined environment divide labor to optimize excavation. Continue reading
Size-sorted sand creates uncommon length scale in windblown formations
A combination of grain-size distribution and critical wind speed is responsible for megaripples. Continue reading
Friction remembers its past
Experiments show that frictional interfaces age and bounce back. Continue reading
Posted in Physics Today
Tagged Interfaces, Mechanics, Physics, Physics Today, Soft matter
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How to build megaripples out of sand
Sorting of grains by steady winds produces rare formations larger than ripples but smaller than dunes. Continue reading
Posted in Physics Today
Tagged Geology, Geomorphology, Geophysics, Physics, Physics Today, Soft matter
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