Abstract:
A method is provided for forming a porous metal catalyst (44) on a substrate (42) for nanotube (84) growth in an emissive display. The method comprises depositing a metal (44) onto a surface of a substrate (12) at an angle (T) to the surface, depositing a metal catalyst (72) onto the metal (44), and forming nanotubes (84) on the metal catalyst (72).
Abstract:
A field emission device and method of forming a field emission device are provided in accordance with the present invention. The field emission device is comprised of a substrate (12) having a deformation temperature that is less than about six hundred and fifty degrees Celsius and a nano-supported catalyst (22) formed on the substrate (12) that has active catalytic particles that are less than about five hundred nanometers. The field emission device is also comprised of a nanotube (24) that is catalytically formed in situ on the nano-supported catalyst (22), which has a diameter that is less than about twenty nanometers.
Abstract:
A process (40) is provided for preparing a catalyst (20). A catalyst (20) is formed over a substrate (12). A gas (24) comprising hydrogen and carbon is applied to the catalyst (20), wherein a carbon seeding layer (26) is formed on the catalyst (20). Carbon nanotubes (28) may then be grown from the catalyst (20) having the carbon seeding layer thereon (26).
Abstract:
A method of forming a protective layer on a substrate (202) such as glass includes depositing a magnesium oxide layer (108, 208) and amorphous oxide material (106, 206) on the substrate (202), either simultaneously or in succession, and at a temperature below 300 degrees Centigrade. The amorphous oxide layer (106, 206) may crystallize in some embodiments when deposited.
Abstract:
A method for removing silicon oxide from a surface of a substrate is disclosed. The method includes depositing material onto the silicon oxide (110) and heating the substrate surface to a sufficient temperature to form volatile compounds including the silicon oxide and the deposited material (120). The method also includes heating the surface to a sufficient temperature to remove any remaining deposited material (130).
Abstract:
A method of removing an amorphous oxide from a surface of a monocrystalline substrate is provided. The method includes depositing a passivation material overlying the amorphous oxide. The monocrystalline substrate is then heated so that the amorphous oxide layer decomposes into at least one volatile species that is liberated from the surface.
Abstract:
An emission device is provided for extracting electrons onto an anode of a visual display. The emission device (10) includes a conductivity limited material (18) positioned between first and second electrodes (14, 16) and having a surface (26). A plurality of catalytic nanoparticles (22) are distributed throughout the conductivity limited material (18), wherein some of the catalytic particles (22) are contiguous to the surface (26). A plurality of nanostructures (24), such as carbon nanotubes, are grown from the catalytic nanoparticles (22) contiguous to the surface (26). A voltage is applied across the conductivity limited material (18) having a plurality of catalytic particles (22) embedded therein, thereby causing the electrons to tunnel between the catalytic particles (22). An anode (28) is spaced apart from the nanostructures (24) for extracting and receiving electrons emitted from the nanostructures (24).
Abstract:
An apparatus that provides lighting for a user interface in a mobile communication device is disclosed. The apparatus may include a planar light guide, at least one light source located adjacent to the planar light guide, a plurality of optical structures having at least a first section of optical structures disposed on the surface of the planar light guide and a second section of optical structures disposed on the surface of the planar light guide separate from the first section of optical structures, wherein the first section of optical structures is configured to cause a first boundary behavior of light associated with the bending of light paths, and the second section of optical structures is configured to cause a second boundary behavior of light associated with the bending of light paths.