Abstract:
Methods for fabricating uniform nanocrystalline diamond thin films with minimized voids are presented. These uniform nanocrystalline diamond thin films can be formed on any number of treated silicon oxide surfaces such as on hydrogen plasma treated surfaces of silicon oxide-coated substrates or on hydrocarbon plasma pre-treated surfaces of silicon oxide-coated substrates. It is believed that treating these surfaces results in maximizing electrostatic attraction between these treated surfaces with nanodiamond particles during a subsequent ultrasonic seeding of the nanodiamond particles onto these threated surfaces. This can result in the nanodiamond particles being substantially uniformly distributed and bound on the treated silicon oxide surface.
Abstract:
2-dimensional nanostructured tungsten carbide which is obtained by control of the alignment of nanostructure during growth of tungsten carbide through control of the degree of supersaturation and a method for fabricating same are disclosed. The method for fabricating 2-dimensional nanostructured tungsten carbide employs a chemical vapor deposition process wherein a hydrogen plasma is applied to prepare 2-dimensional nanostructured tungsten carbide vertically aligned on a nanocrystalline diamond film. The chemical vapor deposition process wherein the hydrogen plasma is applied includes: disposing a substrate with the nanocrystalline diamond film formed thereon on an anode in a chamber, disposing a surface-carburized tungsten cathode above and at a distance from the substrate, and applying the hydrogen plasma into the chamber.