Numerical simulations of electrokinetically generated micro vortices in microchannels

A. S W Ng, W. L W Hau, Y. K. Lee, Yitshak Zohar

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The technology developed to micro-pattern the electric surface charge to be negative, positive or neutral enables the realization of complex liquid flows in simple microchannels. A commercial CFD code is utilized to numerically simulate a variety of electrokinetically-generated liquid flows in a straight and uniform microchannel due to non-uniform surface charge distributions under a single, externally applied electric field. Design methodologies to generate vortical flow in any desired direction are presented. In particular, surface charge patterns required to generate single or multi, co-rotating or counter-rotating, in-plane or out-of-plane vortices are investigated.

Original languageEnglish (US)
Title of host publicationTRANSDUCERS 2003 - 12th International Conference on Solid-State Sensors, Actuators and Microsystems, Digest of Technical Papers
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1887-1890
Number of pages4
Volume2
ISBN (Print)0780377311, 9780780377318
DOIs
StatePublished - 2003
Externally publishedYes
Event12th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS 2003 - Digest of Technical Papers - Boston, United States
Duration: Jun 8 2003Jun 12 2003

Other

Other12th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS 2003 - Digest of Technical Papers
CountryUnited States
CityBoston
Period6/8/036/12/03

Keywords

  • Computational fluid dynamics
  • Design methodology
  • Fluid flow
  • Geometry
  • Lab-on-a-chip
  • Mechanical engineering
  • Microchannel
  • Microfluidics
  • Nonuniform electric fields
  • Numerical simulation

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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  • Cite this

    Ng, A. S. W., Hau, W. L. W., Lee, Y. K., & Zohar, Y. (2003). Numerical simulations of electrokinetically generated micro vortices in microchannels. In TRANSDUCERS 2003 - 12th International Conference on Solid-State Sensors, Actuators and Microsystems, Digest of Technical Papers (Vol. 2, pp. 1887-1890). [1217159] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/SENSOR.2003.1217159