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Transient simulations of the electrophoretic motion of a cylindrical particle through a 90° corner

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Abstract

The trajectory of a cylindrical particle driven by electrophoresis was transiently simulated as the particle moves through a 90° corner. A variety of system parameters were tested to determine their impact on the particle motion. The zeta potential, channel width, and particle aspect ratio were shown to have a minimal effect on the particle motion. Conversely, the initial vertical position of the particle and initial angle with respect to the horizontal had a significant impact on the particle motion. The presence of the 90° corner acts to reduce the initial distribution of angles to the vertical of 90° to less than 30°, demonstrating the possibility of using a corner as a passive control element as part of a larger microfluidic system. However, the reduction in angle is limited to the area near the corner posing a limitation on this means of control.

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Acknowledgments

The authors wish to acknowledge the assistance of Pennsylvania State University High Performance Computing Group. This material is based upon work supported by the National Science Foundation under Grant No. 0348149.

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Authors and Affiliations

  1. Department of Mechanical and Nuclear Engineering, The Pennsylvania State University, 157D Hammond Building, University Park, PA, 16802, USA

    Scott M. Davison & Kendra V. Sharp

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  1. Scott M. Davison
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  2. Kendra V. Sharp
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Correspondence to Kendra V. Sharp.

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Davison, S.M., Sharp, K.V. Transient simulations of the electrophoretic motion of a cylindrical particle through a 90° corner. Microfluid Nanofluid 4, 409–418 (2008). https://doi.org/10.1007/s10404-007-0192-1

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  • DOI: https://doi.org/10.1007/s10404-007-0192-1

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