Patent ID: 7252749
Filing Date: 2007-08-07
Classification: B82Y,C25D

Abstract:
1. A method of depositing a composite film with at least one component being a nanostructured material onto a substrate, the method comprising: (i) forming a suspension of the material in a liquid medium, the nanostructured material comprising at least one of nanotubes and nanowires; (ii) adding small particles to the suspension to promote adhesion of the nanostructured material to the substrate, wherein the small particles comprise a metal selected from the group consisting of iron, lead, and cobalt; (iii) selectively adding a charger to the liquid medium; (iv) immersing electrodes in the suspension, wherein at least one of the electrodes comprises the substrate; and (v) applying a direct or alternating current to the immersed electrodes thereby creating an electrical field between the electrodes; wherein the nanostructured material and the small particles are co-deposited on the substrate to form a composite layer, the composite layer having an intimate mix of the carbon nanotubes and the small particles, and wherein the composite layer has an emission current density greater than 1 A/cm