Patent · US Active

Diffraction based biosensor containing two diffractive gratings

US9989525B2 · kind B2 · utility

0Cited by
3References
49Claims
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Assignee

Inventors

Key dates

Filing dateMar 15, 2013
Grant dateJun 5, 2018
Priority date—
Expiry dateApr 26, 2034

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG01N2021/7776
  • WIPO fieldMeasurement
  • WIPO sectorInstruments

Abstract

The present disclosure provides a diffraction based biosensor containing at least two diffraction gratings. The first grating is referred to as an in-coupling diffraction grating and the coherent light source (laser) is directed to illuminate the in-coupling grating, and the biosensor is configured such that a selected order of the light beam diffracted from the in-coupling diffraction grating illuminates a second biosensor grating coated with analyte-specific receptors which are selected to preferentially bind with analytes being tested for that may or may not be located in a sample being tested.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.