Full Content is available to subscribers

Subscribe/Learn More  >

High-Speed Pulsed Mixing With High-Frequency Switching of Pumping From Three Micropumps

[+] Author Affiliations
Koji Sugano, Akihiro Nakata, Hideaki Yoshimune, Yoshikazu Hirai, Toshiyuki Tsuchiya, Osamu Tabata

Kyoto University, Kyoto, Kyoto, Japan

Paper No. AJK2011-36023, pp. 365-369; 5 pages
  • ASME-JSME-KSME 2011 Joint Fluids Engineering Conference
  • ASME-JSME-KSME 2011 Joint Fluids Engineering Conference: Volume 2, Fora
  • Hamamatsu, Japan, July 24–29, 2011
  • Conference Sponsors: Fluids Engineering Division
  • ISBN: 978-0-7918-4441-0
  • Copyright © 2011 by JSME


In this study, we proposed a novel mixing method using alternate pulsed flows from three inlet channels using three piezoelectric valveless micropumps. Two solutions are assigned into one micropump and the other two micropumps, respectively. The fabricated microfluidic device consists of a cross-shaped mixing channel with three inlet microchannels and three valveless micropumps. According to the experimental results, it was confirmed that the pulsed mixing using three inlet microchannels increased mixing speed with increasing the switching frequency of the micropump driving up to 200 Hz. The proposed method solved the problem of a bias of concentration ratio near the sidewalls which has happened in the previous pulsed mixing method using T- or Y-shaped microchannel with two inlet microchannels. Furthermore, by controlling a solution flow at the confluent area utilizing a reverse flow of the micropump, the mixing speed dramatically increased and the mixing time of 3.6 ms for 90% mixing ratio was achieved at the micropumps switching of 400 Hz.

Copyright © 2011 by JSME
Topics: Micropumps



Interactive Graphics


Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In