Patent ID: 7919048

Claim:
A cellular microarray, comprising: I) a substrate; 2) a plurality of first conductive lines located on a surface of the substrate; 3) a plurality of second conductive lines located on the surface of the substrate; and 4) a plurality of paired planar interdigitated electrodes arranged on the surface of the substrate in an array, wherein: each paired planar interdigitated electrode comprises two members, a first electrode and a second electrode; the first and second conductive lines are electrically connected to the opposite poles of a voltage source; the first conductive lines are electrically connected to the first electrodes of each paired planar interdigitated electrode; the second conductive lines are electrically connected to the second electrodes of each paired planar interdigitated electrode; one member of each paired planar interdigitated electrode is interdigitated with the other member of the pair; one member of each paired planar interdigitated electrode comprises a shaped portion that partially surrounds the other member of the pair; the first electrodes and the second electrodes of each paired planar interdigitated electrode are located on the surface of the substrate; and each of the first and second electrodes of adjacent paired planar interdigitated electrodes partially surrounds and is partially surrounded by the second and first electrodes, respectively, on the surface of the substrate.