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NON-MECHANICAL VALVES FOR FLUIDIC SYSTEMS

  • US 20040144421A1
  • Filed: 11/05/2003
  • Published: 07/29/2004
  • Est. Priority Date: 01/29/2001
  • Status: Active Grant
First Claim
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1. A method of controlling material flow in a microscale channel, comprising:

  • providing a first channel segment having first and second ends, a second channel segment communicating with the first channel segment at a first fluid junction, the first fluid junction being disposed between the first and second ends of the first channel segment, and a third channel segment communicating with the first channel segment at a second fluid junction, the second fluid junction being disposed between the first fluid junction and the second end of the first channel segment;

    applying a differential driving force between the first and second ends of the first channel segment; and

    selectively applying a second differential driving force through the second channel segment that is sufficient to substantially eliminate a differential driving force between the first end of the first channel segment and the first fluid junction, and selectively applying a third differential driving force through the third channel segment sufficient to substantially eliminate a differential driving force between the second fluid junction and the second end of the first channel segment.

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