Patent ID: 7695979
Filing Date: 2010-04-13
Classification: G01N,G03H

Abstract:
1. A biosensor, comprising: a substrate member defining a surface; a photo-reactive agent overlying the surface of said substrate member; a receptive material layer applied directly over said photo-reactive agent and generally uniformly covering said surface of said substrate member, said receptive material being specific for an analyte of interest; wherein a pattern of active and inactive areas is defined by said receptive material layer, said active and inactive areas formed by a masking process wherein a mask is placed over said substrate member prior to irradiating said substrate member with an energy source sufficient for activating said photo-reactive agent such that areas exposed by said mask define said pattern of inactive areas of said receptive material and said areas shielded by said mask define said pattern of active areas of receptive material; and wherein said biosensor is configured to detect the presence of an analyte of interest when exposed to a medium containing said analyte of interest by binding the analyte to said receptive material in said active areas and subsequently facilitate diffraction of transmitted light or reflected light in a diffraction pattern corresponding to said active areas.