Researchers at the National Taiwan University and the National Central University in Taiwan used a technique called two-phase microfluidics to stretch organic molecules in a systematic manner.
The researchers created different types of flow patterns by controlling wall wettability of a microfluidic channel, the flow rate ratio of two fluids, and the Reynolds number, which is a ratio between the inertial and viscous forces in a fluid.
By systematically varying these three parameters, the researchers could control the extension of a polymer string suspended in the fluid flow. Stretching polymers, proteins, DNA, and other organic macromolecules can reveal clues about what the molecules are made of and how they interact with other substances.
(2) Department of Chemical and Materials Engineering, Department of Physics, National Central University, Jhongli, Taiwan
Catherine Meyers | EurekAlert!
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