Patent ID: 6479297
Filing Date: 2002-11-12
Classification: G01N

Abstract:
A sensor array for detecting a gas phase material, the array comprising:a substrate surface; at least one line of receptor material attached to the substrate surface, wherein the gas phase material, comprising a metallic compound preferentially deposits on the receptor material as compared to the substrate surface surrounding the receptor material; a serpentine electrode attached to the substrate surface, the serpentine electrode comprising a plurality of U-shaped segments spaced along the line of receptor material and opening in alternating first and second opposing directions along the line of receptor material; and a comb electrode attached to the substrate surface, the comb electrode comprising a plurality of tines, wherein at least some of the tines extend into at least some of the U-shaped segments opening in the first direction, and further wherein at least some of the tines extending into the U-shaped segments intersect the line of receptor material.