Patent ID: 7578912

Claim:
An electro-active sensor for detecting electro-active species in solution, comprising: a nonconductive platform, the nonconductive platform having a first side and a second side; a first electrode set attached with the first side of the nonconductive platform, wherein the first electrode set further comprises: a first conductive via passing through the nonconductive platform from the first side to the second side; a first electrode attached with the first conductive via on the first side, where the first electrode serves as a first working electrode; a second conductive via passing through the nonconductive platform from the first side to the second side; a second electrode attached with the second conductive via on the first side, where the second electrode serves as a first reference electrode; a third conductive via passing through the nonconductive platform from the first side to the second side; and a third electrode attached with the third conductive via on the first side, where the third electrode serves as an first auxiliary electrode, whereby the working electrode, the reference electrode, and the auxiliary electrode serve as a electrochemical cell that may be utilized to detect the electro-active species in the solution; wherein the first auxiliary electrode from the first electrode set is connected with a second auxiliary electrode from a second electrode set; and wherein the first and second auxiliary electrodes are connected with a common ground.