Patent ID: 7061061

Claim:
An integrated circuit comprising: a plurality of sensor sites formed on the integrated circuit, wherein a sensor material is constrained at the sensor site and has regions of a nonconductive organic material and a conductive material, and in the presence of an analyte, the sensor material has measurable changes in an electrical property; and electrical terminals formed to couple to the sensor material at the sensor sites, wherein the electrical terminals transmit electrical signals to evaluate the change in the electrical property of the sensor material, wherein at least one of the sensor sites is a sensor well that comprises: a field oxide layer; a polysilicon layer disposed directly on the field oxide layer; a first oxide layer disposed directly on the polysilicon layer; a metal-1 layer disposed directly on the first oxide layer; a second oxide layer disposed directly on the metal-1 layer; and a metal-2 layer disposed directly on the second oxide layer.