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SUMMARY:Traffic jams and intermittent flows in microfluidic networks - Den
 is Bartolo (PMMH\, ESPCI)
DTSTART:20100510T120000Z
DTEND:20100510T130000Z
UID:TALK24657@talks.cam.ac.uk
CONTACT:Dr Ed Brambley
DESCRIPTION:We investigate both experimentally and theoretically the traff
 ic of particles flowing in microfluidic obstacle networks. We show that th
 e traffic dynamics is a non-linear process: the particle current does not 
 scale with the particle density even in the dilute limit where no particle
  collision occurs. We demonstrate that this non-linear behaviour stems fro
 m long ranged hydrodynamic interactions. Importantly\, we also establish t
 hat there exists a maximal current above which no stationary particle flow
  can be sustained. For higher current values\, intermittent traffic jams f
 orms thereby inducing the ejection of the particles from the initial path 
 and the subsequent invasion of the network. Eventually\, we put our findin
 gs in the broader context of the transport processes of driven particles i
 n low dimension.
LOCATION:MR5\, CMS
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