Patent ID: 7498063
Filing Date: 2009-03-03
Classification: A61F,B05B

Abstract:
1. An electrospraying method, the method comprising: providing a plurality of nozzle structures, wherein each nozzle structure comprises at least one opening defined along a center axis of the nozzle structure and terminating at a dispensing end thereof from which a spray of particles having an electrical charge applied thereto is dispensed, wherein the particles have a nominal diameter of about 1 nanometer to about 2000 nanometers, wherein the dispensing end of each nozzle structure is separated from the dispensing end of adjacent nozzle structures, and further wherein the dispensing end of a first nozzle structure terminates in a first plane orthogonal to the center axis of the nozzle structure and dispensing ends of one or more other nozzle structures terminate in one or more different planes than the first plane; dispensing the spray of particles from each nozzle structure by creating a nonuniform electrical field between the dispensing ends from which the sprays are established and an electrode electrically isolated from the dispensing ends; and depositing the particles on a surface to form a coating thereon.