Patent ID: 8901433

Claim:
A band electrode array comprising: a substrate; a first insulating layer disposed on the substrate; a first band electrode disposed on the first insulating layer; wherein the first band electrode has a thickness of about 1 nm-about 5000 nm and an exposed cross-sectional surface having a width of about 1 μm-about 1 cm; a second insulating layer disposed on the first insulating layer and completely covering the first band electrode; wherein the second insulating layer has a thickness of about 100 nm-about 500 μm; a second band electrode disposed on the second insulating layer; wherein the thickness of the second band electrode is about 1 nm-about 5000 nm and width of the exposed cross-sectional surface of the second band electrode is about 1 μm-about 1 cm; a third insulating layer is disposed on the second insulating layer and completely covering the second band electrode; wherein the first and second band electrodes are electrically insulated from each other and individually addressable; cross-sectional surfaces of the first and second band electrodes are exposed on the test surface and coextensive with the test surface; and the exposed cross-sectional surfaces substantially overlap each other in a direction perpendicular to the substrate.