Novel applications of thermally controlled microbubble driving system

Koji Takahashi, K. Yoshino, S. Hatano, K. Nagayama, Tanemasa Asano

Research output: Contribution to conferencePaperpeer-review

22 Citations (Scopus)

Abstract

Novel applications of microbubble migration controlled by microheaters are proposed and demonstrated. One is a liquid-film-type motor/conveyer. Vapor or gas bubbles in the cavities on rotor are driven based on Marangoni effect caused by the microheaters on stator. The other is a "valve-less" valve, which is made of in-line microheaters at an intersection of microchannels, where a microbubble moves according to the thermocapillary force and shuts-off liquid flow due to its surface hardness with no mechanical part. With the developments of these new devices, the mechanisms of heat transfer and fluid motion around the microbubble are discussed.

Original languageEnglish
Pages286-289
Number of pages4
Publication statusPublished - Jan 1 2001
Event14th IEEE International Conference on Micro Electro Mechanical Systems (MEMS 2001) - Interlaken, Switzerland
Duration: Jan 21 2001Jan 25 2001

Other

Other14th IEEE International Conference on Micro Electro Mechanical Systems (MEMS 2001)
CountrySwitzerland
CityInterlaken
Period1/21/011/25/01

All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering
  • Mechanical Engineering
  • Electrical and Electronic Engineering

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