Biosensing devices which produce diffraction images

Details Biosensing devices which produce diffraction images Biosensing devices which produce diffraction images

G - Physics

01

N

G01N 33/553 (2006.01) G01N 33/569 (2006.01) A61F 13/84 (2006.01) G01N 21/77 (2006.01)

Patent

CA 2274456

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 upon which is printed a specific, predetermined pattern of a analyte-specific receptors. 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 dispositif et un procédé, peu coûteux et sensibles, de détection et de quantification des analytes présents dans un milieu. L'appareil comporte un film métallisé sur lequel est imprimée une composition spécifique et préétablie d'un récepteur spécifique d'analytes. Après la fixation d'un analyte cible, dans le but de sélectionner des zones du film plastique sur lequel le récepteur est imprimé, la diffraction de la lumière émise et/ou réfléchie se produit à travers les dimensions physiques et la position définie et précise de l'analyte. Une image de diffraction est produite, pouvant être vue facilement à l'oeil nu ou, éventuellement, au moyen d'un appareil de détection.

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