Microbubble actuators - An introduction to microscale thermal fluid engineering

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Citations (Scopus)

Abstract

Liquid-gas interface often appears in the microfluidic systems due to dissolved and residual gas or thermally generated vapor. Thermal expansion of bubble is the most famous way to control this interface and is used as the micro pumping engine in the thermal ink-jet printer. On the other hand, thermocapillary force of droplet is successfully applied in the micro optical switch. This force is based on the controllability of surface tension that depends on temperature. In thermal fluid engineering, a similar phenomena appears on bubbles and liquid surfaces in temperature or concentration gradient and is known generally as Marangoni effect. The contemporary microfabrication technique enables us to fabricate a microheater tiny enough to control temperature quickly and precisely in micro length scale. Consequently the Marangoni effect or thermocapillary force on microbubbles can be managed artificially and the microbubble of the order of hundreds micrometers can be driven without any movable part. Novel actuators using microbubble and their microfluidic mechanisms are explained.

Original languageEnglish
Title of host publication2001 International Microprocesses and Nanotechnology Conference, MNC 2001
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages50-51
Number of pages2
ISBN (Electronic)4891140178, 9784891140175
DOIs
Publication statusPublished - Jan 1 2001
EventInternational Microprocesses and Nanotechnology Conference, MNC 2001 - Shimane, Japan
Duration: Oct 31 2001Nov 2 2001

Publication series

Name2001 International Microprocesses and Nanotechnology Conference, MNC 2001

Other

OtherInternational Microprocesses and Nanotechnology Conference, MNC 2001
CountryJapan
CityShimane
Period10/31/0111/2/01

All Science Journal Classification (ASJC) codes

  • Biotechnology
  • Fluid Flow and Transfer Processes
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Instrumentation

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  • Cite this

    Takahashi, K. (2001). Microbubble actuators - An introduction to microscale thermal fluid engineering. In 2001 International Microprocesses and Nanotechnology Conference, MNC 2001 (pp. 50-51). [984063] (2001 International Microprocesses and Nanotechnology Conference, MNC 2001). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/IMNC.2001.984063