Patent ID: 7687234

Claim:
A method for making an array of sensors, comprising: providing an array of carbon electrodes, each carbon electrode comprising a surface, wherein said surfaces are exposed; coating the array of carbon electrodes with a dielectric layer such that the dielectric layer covers said surfaces; selectively removing a portion of the dielectric layer using photolithography to expose a first portion of each of said surfaces, wherein a second portion of each of said surfaces remain coated by the dielectric layer, wherein the selective removal causes formation of a first chemical species on the first portion of said surfaces; and attaching a probe molecule to at least one of the carbon electrodes utilizing the first chemical species, wherein attaching the probe molecule comprises one or more of the following: a) directly reacting the probe molecule with the first chemical species, b) converting the first chemical species to a second chemical species followed by directly reacting the probe molecule with the second chemical species, c) directly reacting a linker molecule with the first chemical species followed by reacting the probe molecule with the linker molecule, and d) converting the first chemical species to a second chemical species followed by reacting a linker molecule with the second chemical species and reacting the probe molecule with the linker molecule.