A method for making a sensing element for use in a sensor or biosensor that amperometrically measures the concentration of an analyte in a liquid, includes the following sequential steps: a) obtaining an electrode; b) immersing the electrode in a solution of monomer that is capable of being electropolymerized...http://www.google.com/patents/US5540828?utm_source=gb-gplus-sharePatent US5540828 - Method for making electrochemical sensors and biosensors having a polymer modified surface