Patent ID: 8860438

Claim:
An electrical double layer (EDL) capacitive device comprising: an insulating substrate defining a nanopore therethrough; a nanopore electrode exposed in a portion of the nanopore, wherein the nanopore electrode defines a conductive ring surface exposed around an inner surface of the nanopore along its depth in a conductive ring; an electrolyte in contact with the nanopore electrode; a reference electrode in electrical contact with the electrolyte; and a meter electrically coupled between the nanopore electrode and the reference electrode, wherein the meter is configured to measure the EDL capacitance between the nanopore electrode and the reference electrode at a first time and to correlate the first measured EDL capacitance with (a) one or more properties of an analyte; (b) the identity of the analyte; or (c) one or more properties of the analyte and the identity of the analyte.