Phys. Rev. Lett. 99, 058001 (2007) [4 pages]Spontaneous Separation of Charged Grains
In 1867, Lord Kelvin described an experiment in which two streams of water droplets were connected so that each stream amplified the charge on the second stream [ W. Thomson Proc. R. Soc. London 16 67 (1867)]. We present here a complementary effect in flowing grains that spontaneously separates similar and well-mixed grains into two charged streams of demixed grains. This effect has important consequences for industrial and natural processes. © 2007 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.99.058001
DOI:
10.1103/PhysRevLett.99.058001
PACS:
45.70.Qj, 05.45.Df, 46.55.+d
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