Patent ID: 7824621
Filing Date: 2010-11-02
Classification: B01J,B01L,Y10T

Abstract:
1. An apparatus, comprising: a reservoir which stores a liquid; a capillary nozzle including a lower portion disposed inside the reservoir and an upper portion disposed outside the reservoir, wherein the capillary nozzle transfers the liquid from a lower end of the capillary nozzle to an upper end of the capillary nozzle using capillary force; a potentiostat in electrical communication with the liquid; a substrate mount; a substrate disposed under the substrate mount and adjacent to the upper end of the capillary nozzle; and a distance adjusting unit which reciprocatingly moves the substrate between a first position and a second position with respect to the capillary nozzle, wherein the first position is a position where a distance between the upper end of the capillary nozzle and the surface of the substrate is less than an effective distance and the second position is a position where the distance between the upper end of the capillary nozzle and the surface of the substrate is greater than the effective distance, and wherein the effective distance is a maximum distance a liquid bridge can form due to charge concentration between the capillary nozzle and the substrate when a voltage is applied to the liquid.