Fig. 6: Using extraction electrodes to achieve addressable EHD printing.

a Schematic of addressable EHD printhead; b physical image of addressable EHD printing; c effects of the spacing between the square electrode pairs Se and the vertical distance between the nozzle tip and the electrode pairs He on the performance of independent control; d effects of the electrode length Le and electrode width We on the performance of independent control; e jetting images of different nozzle combinations: (i) selective jetting of the nozzle array; (ii) all nozzles jetting simultaneously