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Substrates, systems and methods for analyzing materials

  • US 9,222,133 B2
  • Filed: 12/12/2014
  • Issued: 12/29/2015
  • Est. Priority Date: 09/01/2006
  • Status: Active Grant
First Claim
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1. A method of monitoring an analytical reaction, comprising:

  • a) providing a substrate comprising;

    i) a first surface and at least a first optical waveguide disposed beneath but sufficiently proximal to the first surface that when excitation radiation is passed through the first optical waveguide, an evanescent field emanating from the first optical waveguide reaches above the first surface;

    ii) a mask layer disposed over the first surface of the substrate, the mask layer comprising a plurality of apertures that pass through the mask layer and expose the first surface; and

    iii) an individual, optically resolvable analyte disposed within one of the apertures sufficiently proximal to the first surface and external to the waveguide to be illuminated by the evanescent field;

    b) directing optical energy through the first optical waveguide, thereby generating said evanescent field and further illuminating the individual, optically resolvable analyte; and

    c) detecting a signal from the individual, optically resolvable analyte, wherein the signal is indicative of the analytical reaction, thereby monitoring the analytical reaction.

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