Patent ID: 6573107
Filing Date: 2003-06-03
Classification: B82Y,G01N,Y10S

Abstract:
A method of detecting an explosive substance, comprising the steps of:a. obtaining a biosensor element made through the steps of: 1) establishing a substrate which has a substrate surface; 2) coating a bimetallic layer on said substrate surface; 3) applying a tether layer on said bimetallic layer; and 4) covalently binding a biosensor layer to said tether layer wherein said biosensor layer contains biomolecules specific for an explosive substance; b. applying said biosensor element to a surface plasmon resonance spectroscope having a prism to direct light; c. interrogating the surface of said biosensor element with a light source from said surface plasmon resonance spectroscope; d. exposing said biosensor element to an to an air sample in which said explosive substance might exist; e. interrogating again the surface of said biosensor element with said light source; and f. detecting a presence of said explosive substance with said surface plasmon resonance spectroscope.