Tornadoes in a microchannel

@article{Perez2009TornadoesIA,
  title={Tornadoes in a microchannel},
  author={Carlos L. Perez and Jonathan D. Posner},
  journal={Physics of Fluids},
  year={2009},
  volume={21},
  pages={091105}
}
In non-dilute colloidal suspensions, gradients in particle volume fraction result in gradients in electrical conductivity and permittivity. An externally applied electric field couples with gradients in electrical conductivity and permittivity and, under some conditions, can result in electric body forces that drive the flow unstable forming vortices. The experiments are conducted in square 200 micron PDMS microfluidic channels. Colloidal suspensions consisted of 0.01 volume fraction of 2 or 3… Expand

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