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SUMMARY:Patterned segregation: Order out of complexity - Tom Mullin\, Dept
 . of Physics and Astronomy\, University of Manchester\, U.K.
DTSTART:20070813T134500Z
DTEND:20070813T143000Z
UID:TALK7794@talks.cam.ac.uk
CONTACT:Nick Watkins
DESCRIPTION:Segregation in mixtures of granular materials is a topic which
  is of interest to a broad range of scientists from physicists\, to geolog
 ists and engineers. The phenomenon involves the spontaneous de-mixing of a
 n initially mixed state into its constituent components under the action o
 f flow. We will discuss these issues and present the results of experimen
 tal investigations into particle segregation in a binary mixture which is 
 subject to horizontal forcing. The initially mixed state undergoes a surpr
 ising self–organization process such that the two constituent components
  separate to form patterned structures. The pattern formation process show
 s critical dependence on the concentration ratio of the mixture and this s
 eems to be in accord with notions of phase transitions. Moreover\, changin
 g the particle shape has a dramatic effect on the order of the transition
 .\n
LOCATION:Law Faculty\, Cambridge
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