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Microfluidic device and method for improved sample handling

  • US 20030127327A1
  • Filed: 12/27/2002
  • Published: 07/10/2003
  • Est. Priority Date: 01/04/2002
  • Status: Abandoned Application
First Claim
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1. A microfluidics device for use in handling a sample that contains charged components, comprising a substrate, formed in the substrate, a microchannel network that includes a channel segment communicating with first and second reservoirs, said segment being defined by a channel-forming wall portion, and said reservoirs having or being adapted to receive first and second electrodes, respectively, by which a voltage potential can be applied across the reservoirs, and means defining a projection that extends from said wall portion into an interior space in the segment, terminating therein at a point, edge, or surface, whereby a voltage potential applied between the first and second reservoirs creates an electric field gradient within the channel segment that causes charged components in a sample added to the first reservoir, or between the first reservoir and the projection, to concentrate in the region of the projection[the claim as written covers these different stacking configuration]

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