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117665 |
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|a Roper, Marcus
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|a Massachusetts Institute of Technology. Department of Mechanical Engineering
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|a Hood, Kaitlyn Tuley
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|a Hood, Kaitlyn Tuley
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|a Pairwise interactions in inertially driven one-dimensional microfluidic crystals
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|b American Physical Society,
|c 2018-09-07T14:56:44Z.
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|z Get fulltext
|u http://hdl.handle.net/1721.1/117665
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|a In microfluidic devices, inertia drives particles to focus on a finite number of inertial focusing streamlines. Particles on the same streamline interact to form one-dimensional microfluidic crystals (or "particle trains"). Here we develop an asymptotic theory to describe the pairwise interactions underlying the formation of a one-dimensional crystal. Surprisingly, we show that particles assemble into stable equilibria, analogous to the motion of a damped spring. The damping of the spring is due to inertial focusing forces, and the spring force arises from the interplay of viscous particle-particle and particle-wall interactions. The equilibrium spacing can be represented by a quadratic function in the particle size and therefore can be controlled by tuning the particle radius.
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|a National Science Foundation (U.S.) (Award DMS-1606487)
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|a University of California, Los Angeles (Dissertation Year Fellowship)
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|a en
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|a Article
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|t Physical Review Fluids
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