A magnetic microstirrer and array for microfluidic mixing

Liang Hsuan Lu*, Kee Suk Ryu, Chang Liu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

407 Scopus citations


We report the development of a micromachined magnetic-bar micromixer for microscale fluid mixing in biological laboratory-on-a-chip applications. The mixer design is inspired by large scale magnetic bar mixers. A rotating magnetic field causes a single magnetic bar or an array of them to rotate rapidly within a fluid environment. A fabrication process of the magnetic bar mixer is developed. Results of fluid mixing in micro channels and chambers are investigated using experimental means and computer-aided fluid simulation.

Original languageEnglish (US)
Pages (from-to)462-469
Number of pages8
JournalJournal of Microelectromechanical Systems
Issue number5
StatePublished - Oct 2002


  • Active mixer
  • Magnetic actuation
  • Microfluidics
  • Mixer array

ASJC Scopus subject areas

  • Mechanical Engineering
  • Electrical and Electronic Engineering


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