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Porous inorganic substrate for high-density arrays

  • US 20030003474A1
  • Filed: 03/18/2002
  • Published: 01/02/2003
  • Est. Priority Date: 09/02/1999
  • Status: Active Grant
First Claim
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1. A substrate for attaching an array of biological or chemical analytes, said substrate comprises:

  • a) a porous, predominantly inorganic layer adhered to a flat, rigid, non-porous, inorganic understructure;

    b) said porous inorganic layer characterized as having a plurality of interconnected voids of a predetermined mean size of not less than about 0.1 μ

    m dispersed therethrough, and having void channels that extend through to a top surface of said porous inorganic layer; and

    said voids are defined by a network of inorganic material having a predetermined mean particle size of not less than about 0.1 μ

    m; and

    c) said inorganic material and contents of said voids exhibit a high contrast in their indices of refraction relative to each other.

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