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New Chemical Physics Study Findings Have Been Reported by Investigators at Princeton University

May 6, 2014

By a News Reporter-Staff News Editor at Physics Week -- A new study on Chemical Physics is now available. According to news reporting out of Princeton, New Jersey, by VerticalNews editors, research stated, "We employ extensive computer simulations to study the flow behavior of spherical, nanoscale colloids in a viscoelastic solvent under Poiseuille flow. The systems are confined in a slit-like microfluidic channel, and viscoelasticity is introduced explicitly through the inclusion of polymer chains on the same length scale as the dispersed solute particles."

Our news journalists obtained a quote from the research from Princeton University, "We systematically study the effects of flow strength and polymer concentration, and identify a regime in which the colloids migrate to the centerline of the microchannel, expelling the polymer chains to the sides. This behavior was recently identified in experiments, but a detailed understanding of the underlying physics was lacking. To this end, we provide a detailed analysis of this phenomenon and discuss ways to maximize its effectiveness."

According to the news editors, the research concluded: "The focusing mechanism can be exploited to separate and capture particles at the sub-micrometer scale using simple microfluidic devices, which is a crucial task for many biomedical applications, such as cell counting and genomic mapping."

For more information on this research see: Flow-induced demixing of polymer-colloid mixtures in microfluidic channels. Journal of Chemical Physics, 2014;140(9):371-378. Journal of Chemical Physics can be contacted at: Amer Inst Physics, Circulation & Fulfillment Div, 2 Huntington Quadrangle, Ste 1 N O 1, Melville, NY 11747-4501, USA. (American Institute of Physics -; Journal of Chemical Physics -

Our news journalists report that additional information may be obtained by contacting A. Nikoubashman, Princeton University, Dept. of Chem & Biol Engn, Princeton, NJ 08544, United States. Additional authors for this research include N.A. Mahynski, A.H. Pirayandeh and A.Z. Panagiotopoulos.

Keywords for this news article include: Princeton, New Jersey, United States, Chemical Physics, North and Central America

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Source: Physics Week

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