Lateral migration and focusing of colloidal particles and DNA molecules under viscoelastic flow.

@article{Kim2012LateralMA,
  title={Lateral migration and focusing of colloidal particles and DNA molecules under viscoelastic flow.},
  author={Jae Young Kim and Sung Won Ahn and Sung Sik Lee and Ju Min Kim},
  journal={Lab on a chip},
  year={2012},
  volume={12 16},
  pages={
          2807-14
        }
}
Much difficulty has been encountered in manipulating small-scale materials, such as submicron colloidal particles and macromolecules (e.g., DNA and proteins), in microfluidic devices since diffusion processes due to thermal (Brownian) motion become more pronounced with decreasing particle size. Here, we present a novel approach for the continuous focusing of such small-scale materials. First, we successfully focused fluorescent submicron polystyrene (PS) beads along equilibrium positions in… CONTINUE READING
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