Abstract

An emerging technology in the area of microsystems is micro-total analysis systems (μTAS) for biological sample analysis. We have simulated electro-osmosis - a common transport mechanism within these devices - by developing meshless techniques. Numerical simulation of electro-osmotic transport requires the solution of the Laplace equation, the Poisson-Boltzmann equation and the incompressible Stokes or Navier-Stokes equations. We describe the development and implementation of meshless techniques for all the governing equations. In particular, we introduce a stabilized Stokes solver for very-low Reynolds number flows and a multistep Navier-Stokes solver for a wide range of Reynolds number flows. We have analyzed electro-osmotic transport in three geometries typically encountered in biological devices: a straight channel, a cross-shaped intersection, and a T-shaped intersection.

Original languageEnglish (US)
Pages (from-to)435-449
Number of pages15
JournalJournal of Microelectromechanical Systems
Volume9
Issue number4
DOIs
StatePublished - Dec 2000

ASJC Scopus subject areas

  • Mechanical Engineering
  • Electrical and Electronic Engineering

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