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DEVICE HAVING REGIONS OF DIFFERING AFFINITIES TO FLUID, METHODS OF MAKING SUCH DEVICES, AND METHODS OF USING SUCH DEVICES

  • US 20120063972A1
  • Filed: 10/07/2011
  • Published: 03/15/2012
  • Est. Priority Date: 04/17/1997
  • Status: Abandoned Application
First Claim
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1. A microfluidic device comprising:

  • a first element comprising a first surface;

    a second element, said second element comprising a second surface, said second surface facing said first surface and being spaced from said first surface;

    said first element comprising at least a first sample retaining element,at least a portion of said first surface of said first element having a first affinity to a first fluid, andsaid first sample retaining element having a second affinity to said first fluid, said second affinity differing from said first affinity at least in part as a result of at least one of said first surface and said first sample retaining element being subjected to at least one treatment selected from the group consisting of plasma treatments, ion embedding treatments, surface charging treatments, chemical treatments, optical treatments, electronic treatments and electromagnetic treatments.

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