Optical diffraction biosensor

G - Physics – 01 – N

Patent

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Details

G01N 33/53 (2006.01) A61F 13/42 (2006.01) B41M 3/00 (2006.01) G01N 21/47 (2006.01) G01N 27/327 (2006.01)

Patent

CA 2309595

The present invention provides an inexpensive and sensitive device and method for detecting and quantifying analytes present in a medium. The device comprises a metalized film (20) upon which is printed a specific, predetermined pattern of analyte-specific receptors (25). Upon attachment of a target analyte to select areas of the plastic film upon which the receptor is printed, diffraction of transmitted and/or reflected light occurs via the physical dimensions and defined, precise placement of the analyte. A diffraction image is produced which can be easily seen with the eye or, optionally, with a sensing device.

La présente invention concerne un procédé et un dispositif, bon marché et sensible, pour la détection et la mesure de quantité d'analytes présents dans un milieu. Le dispositif comprend un film (20) métallisé sur lequel est imprimé un motif spécifique, prédéterminé, de récepteurs spécifiques (25) desdits analytes. Lors de la fixation d'un analyte cible aux endroits du film plastique sur lesquels le récepteur est imprimé, il se produit une diffraction de la lumière émise et/ou réfléchie selon les dimensions physiques et l'emplacement défini et précis de l'analyte. L'image de diffraction produite peut être aisément observée avec l'oeil ou, éventuellement, à l'aide d'un dispositif de détection.

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