Improving the mixing performance of side channel type micromixers using an optimal voltage control model

Chien Hsien Wu, Ruey Jen Yang

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)

Abstract

Electroosmotic flow in microchannels is restricted to low Reynolds number regimes. Since the inertia forces are extremely weak in such regimes, turbulent conditions do not readily develop, and hence species mixing occurs primarily as a result of diffusion. Consequently, achieving a thorough species mixing generally relies upon the use of extended mixing channels. This paper aims to improve the mixing performance of conventional side channel type micromixers by specifying the optimal driving voltages to be applied to each channel. In the proposed approach, the driving voltages are identified by constructing a simple theoretical scheme based on a 'flow-rate-ratio' model and Kirchhoff's law. The numerical and experimental results confirm that the optimal voltage control approach provides a better mixing performance than the use of a single driving voltage gradient.

Original languageEnglish
Pages (from-to)119-131
Number of pages13
JournalBiomedical Microdevices
Volume8
Issue number2
DOIs
Publication statusPublished - 2006 Jun 1

All Science Journal Classification (ASJC) codes

  • Biomedical Engineering
  • Molecular Biology

Fingerprint Dive into the research topics of 'Improving the mixing performance of side channel type micromixers using an optimal voltage control model'. Together they form a unique fingerprint.

Cite this