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Sample evaporative control

  • US 6,555,389 B1
  • Filed: 12/23/1999
  • Issued: 04/29/2003
  • Est. Priority Date: 05/11/1999
  • Status: Expired due to Term
First Claim
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1. A microfluidic device comprising(a) a solid substrate, (b) formed in the substrate, a channel network having (i) one or more reservoirs, and (ii) one or more capillary channels connecting the reservoirs in fluid communication with one another, said network having wall portions that are sufficiently wettable to promote flow of a liquid in the network by capillarity along such wall portions, and (c) formed on at least one of said wall portions, a non-wettable region effective to block liquid flow by capillarity past or through said non-wettable region.

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