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A Novel Asymmetric Microfluidic Oscillator

[+] Author Affiliations
Chiko Chen, Jing-Tang Yang

National Tsing Hua University

Chien-Hung Ho

National Applied Research Laboratories

Paper No. IMECE2005-79269, pp. 607-610; 4 pages
  • ASME 2005 International Mechanical Engineering Congress and Exposition
  • Microelectromechanical Systems
  • Orlando, Florida, USA, November 5 – 11, 2005
  • Conference Sponsors: Microelectromechanical Systems Division
  • ISBN: 0-7918-4224-X | eISBN: 0-7918-3769-6
  • Copyright © 2005 by ASME


In this work we present an asymmetric microfluidics oscillator of innovative design and systematically investigated it with both numerical and experimental methods. The design of both entrance nozzle and asymmetric feedback channels enable the oscillator to stably oscillate in very small range of Reynolds number 1~100, whereas the Strouhal number remained as 1 × 10−3 . The results reveal that improvement of the performance was resulted from the augmented periodic impingement of the flows from the feedback channels. The analysis also indicates that dynamic phenomena in the working fluid of this novel oscillator were distinctive and appropriately appraised.

Copyright © 2005 by ASME
Topics: Microfluidics



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