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Number of Neighbors Determines Granular Structure

18 July 2011
The structures within a pile of soil or grain that allows it to bear weight depend only on the average number of neighbors for each particle, not on any details of the types of particles or even on the presence of gravity.
article link PRL (15 July 2011)
unloading corn at a grain elevator

Temperature Difference Leads to Magnetism

8 July 2011
Creating a temperature difference in an arrangement of semiconductors generates a circulating current and a magnetic field, according to simulations. The effect may account for some inefficiency in electronic devices.
article link PRB (July 2011)
heated semiconductor generates current loops

Generating Chaos in a New Way

1 July 2011
'Explosive' chaos may occur in a system experiencing a sudden change--like an electric circuit moments after it's switched on--according to theoretical work.
article link PRL (24 June 2011)
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