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Compact optical detection system for a microfluidic device

  • US 7,518,726 B2
  • Filed: 04/12/2006
  • Issued: 04/14/2009
  • Est. Priority Date: 04/12/2005
  • Status: Active Grant
First Claim
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1. A dry-focus microfluidic device, comprising:

  • a first substrate;

    a plurality of channels formed in the first substrate, wherein at least one channel is a microfluidic channel;

    a plurality of optical alignment marks formed in the first substrate spaced apart from the plurality of channels, each alignment mark having a curved wall; and

    a second substrate bonded to the first substrate such that the channels are covered and the alignment marks are closed;

    wherein at least one channel is positioned between at least two alignment marks.

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