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Berlin Brandenburg

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  • 1
    Language: English
    Description: One provides nanocrystalline diamond material that comprises a plurality of substantially ordered diamond crystallites that are sized no larger than about 10 nanometers. One then disposes a non-diamond component within the nanocrystalline diamond material. By one approach this non-diamond component comprises an electrical conductor that is formed at the grain boundaries that separate the diamond crystallites from one another. The resultant nanowire is then able to exhibit a desired increase with respect to its ability to conduct electricity while also preserving the thermal conductivity behavior of the nanocrystalline diamond material.
    Keywords: Materials Science
    Source: SciTech Connect (U.S. Dept. of Energy - Office of Scientific and Technical Information)
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  • 2
    Language: English
    Description: One provides (101) disperse ultra-nanocrystalline diamond powder material that comprises a plurality of substantially ordered crystallites that are each sized no larger than about 10 nanometers. One then reacts (102) these crystallites with a metallic component. The resultant nanowire is then able to exhibit a desired increase with respect to its ability to conduct electricity while also substantially preserving the thermal conductivity behavior of the disperse ultra-nanocrystalline diamond powder material. The reaction process can comprise combining (201) the crystallites with one or more metal salts in an aqueous solution and then heating (203) that aqueous solution to remove the water. This heating can occur in a reducing atmosphere (comprising, for example, hydrogen and/or methane) to also reduce the salt to metal.
    Keywords: Materials Science ; Nanoscience And Nanotechnology
    Source: SciTech Connect (U.S. Dept. of Energy - Office of Scientific and Technical Information)
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  • 3
    Language: English
    Description: A 213 nm laser beam is capable of single photon ablative photodecomposition for the removal of a polymer or biological material substrate. Breaking the molecular bonds and displacing the molecules away from the substrate in a very short time period results in most of the laser photon energy being carried away by the displaced molecules, thus minimizing thermal damage to the substrate. The incident laser beam may be unfocused and is preferably produced by quintupling the 1,064 nm radiation from a Nd:YAG solid state laser, i.e., at 213 nm. In one application, the 213 nm laser beam is expanded in cross section and directed through a plurality of small beta barium borate (BBO) crystals for increasing the energy per photon of the laser radiation directed onto the substrate. The BBO crystals are arranged in a crystal matrix array to provide a large laser beam transmission area capable of accommodating high energy laser radiation without damaging the BBO crystals. The BBO crystal matrix array may also be used with 266 nm laser radiation for carrying out single or multi photon ablative photodecomposition. The BBO crystal matrix array may also be used in an optical parametric oscillator mode to generate high power tunable laser radiation in the range of 210--400 nm.
    Keywords: Engineering ; Energy Conservation, Consumption, And Utilization ; Radiology And Nuclear Medicine ; Laser Radiation ; Frequency Mixing ; Neodymium Lasers ; Ablation ; Uses ; Surgery ; Industry ; Frequency Converters ; Borates ; Barium Compounds ; Engineering
    Source: SciTech Connect (U.S. Dept. of Energy - Office of Scientific and Technical Information)
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  • 4
    Language: English
    Description: A plasma device is described for use in controlling nuclear reactions within the plasma including a first wall and blanket formed in a one-piece structure composed of a solid solution containing copper and lithium and melting above about 500/sup 0/C.
    Keywords: 70 Plasma Physics And Fusion Technology ; Breeding Blankets ; Design ; First Wall ; Copper ; Lithium ; Specifications ; Alkali Metals ; Elements ; Metals ; Reactor Components ; Thermonuclear Reactor Walls ; Transition Elements ; 700102 - Fusion Energy- Plasma Research- Diagnostics
    Source: SciTech Connect (U.S. Dept. of Energy - Office of Scientific and Technical Information)
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  • 5
    Language: English
    Description: This patent describes a nuclear reaction plasma device for generating neutron streams having a plasma and a structure serving as both the first wall and the blanket. The structure comprises: a first wall for containment of plasma at elevated temperatures. The first wall adjoins and exposes an inner plasma zone thereby providing a first barrier to the plasma and a blanket containing multiple channels for channeling helium and multiple passages for channeling water through the blanket. The blanket is for generation of sensible heat from the neutron streams. The first wall comprises an inner surface for exposure to the plasma. The inner surface and the blanket are of a one-piece structure initially composed of a metallic solid solution containing a major amount of copper and about 15-25 at.% of lithium and melting above about 500/sup 0/C. The blanket includes means for adding lithium vapor to the helium gas being channeled to the blanket for replacing lithium converted to tritium. The walls of the channels are composed of a material which will allow transfer of tritium from the blanket into the helium gas passing through the channels and transfer of the lithium vapor from the helium gas into the blanket.
    Keywords: 70 Plasma Physics And Fusion Technology ; Thermonuclear Devices ; Breeding Blankets ; Design ; First Wall ; Copper Compounds ; GAS Flow ; Helium ; High Temperature ; Intermetallic Compounds ; Lithium Compounds ; Melting Points ; Neutron Sources ; Plasma ; Plasma Confinement ; Solid Solutions ; Tritium ; Vapors ; Water ; Alkali Metal Compounds ; Alloys ; Beta Decay Radioisotopes ; Beta-Minus Decay Radioisotopes ; Confinement ; Dispersions ; Elements ; Fluid Flow ; Fluids ; Gases ; Hydrogen Compounds ; Hydrogen Isotopes ; Isotopes ; Light Nuclei ; Mixtures ; Nonmetals ; Nuclei ; Odd-Even Nuclei ; Oxygen Compounds ; Particle Sources ; Physical Properties ; Radiation Sources ; Radioisotopes ; Rare Gases ; Reactor Components ; Solutions ; Thermodynamic Properties ; Thermonuclear Reactor Walls ; Transition Element Compounds ; Transition Temperature ; Years Living Radioisotopes ; 700201 - Fusion Power Plant Technology- Blanket Engineering ; 700209 - Fusion Power Plant Technology- Component Development & Materials Testing
    Source: SciTech Connect (U.S. Dept. of Energy - Office of Scientific and Technical Information)
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  • 6
    Language: English
    Description: One provides nanocrystalline diamond material that comprises a plurality of substantially ordered diamond crystallites that are sized no larger than about 10 nanometers. One then disposes a non-diamond component within the nanocrystalline diamond material. By one approach this non-diamond component comprises an electrical conductor that is formed at the grain boundaries that separate the diamond crystallites from one another. The resultant nanowire is then able to exhibit a desired increase with respect to its ability to conduct electricity while also preserving the thermal conductivity behavior of the nanocrystalline diamond material.
    Keywords: Materials Science
    Source: SciTech Connect (U.S. Dept. of Energy - Office of Scientific and Technical Information)
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  • 7
    Patent
    Patent
    United States
    Language: English
    Description: A photovoltaic device and method of making same. A layer of p-doped microcrystalline diamond is deposited on a layer of n-doped ultrananocrystalline diamond such as by providing a substrate in a chamber, providing a first atmosphere containing about 1% by volume CH.sub.4 and about 99% by volume H.sub.2 with dopant quantities of a boron compound, subjecting the atmosphere to microwave energy to deposit a p-doped microcrystalline diamond layer on the substrate, providing a second atmosphere of about 1% by volume CH.sub.4 and about 89% by volume Ar and about 10% by volume N.sub.2, subjecting the second atmosphere to microwave energy to deposit a n-doped ultrananocrystalline diamond layer on the p-doped microcrystalline diamond layer. Electrodes and leads are added to conduct electrical energy when the layers are irradiated.
    Keywords: Solar Energy
    Source: SciTech Connect (U.S. Dept. of Energy - Office of Scientific and Technical Information)
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  • 8
    Language: English
    Description: The patent covers an oxygen stabilized intermetallic compound having the formula (Zr/sub 1-x/Ti/sub x/)2-u(V/sub 1-y/Fe/sub y/)O/sub z/, where X=0.0 to 0.9, Y=0.01 to 0.9, Z=0.25 to 0.5 and U=0 to 1. The compound is capable of reversibly sorbing hydrogen at temperatures from -196/sup 0/ C to 200/sup 0/ C at pressures down to 10-6 torr. The compound is suitable for use as a hydrogen getter in low pressure, high temperature applications such as magnetic confinement fusion devices.
    Keywords: Materials Science ; Hydrogen ; Sorption ; Intermetallic Compounds ; Stabilization ; Iron Alloys ; Sorptive Properties ; Vanadium Alloys ; Zirconium Alloys ; Cobalt Alloys ; Gettering ; Manganese Alloys ; Nickel Alloys ; Oxygen ; Titanium Alloys ; Alloys ; Elements ; Nonmetals ; Surface Properties 360104 -- Metals & Alloys-- Physical Properties
    Source: SciTech Connect (U.S. Dept. of Energy - Office of Scientific and Technical Information)
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  • 9
    Patent
    Patent
    United States
    Language: English
    Description: A ternary intermetallic compound having the formula Zr(V/sub 1-x/Cr/sub x/)/sub 2/ where x is in the range of 0.01 to 0.90 is capable of reversibly sorbing hydrogen at temperatures ranging from room temperature to 200/sup 0/C, at pressures down to 10/sup -6/ torr. The compound is suitable for use as a hydrogen getter in low pressure, high temperature applications such as magnetic confinement fusion devices.
    Keywords: 70 Plasma Physics And Fusion Technology ; Chromium Alloys ; Sorptive Properties ; Hydrogen ; Gettering ; Thermonuclear Reactors ; Getters ; Vanadium Alloys ; Zirconium Alloys ; Adsorption ; Intermetallic Compounds ; Ternary Alloy Systems ; Alloy Systems ; Alloys ; Elements ; Nonmetals ; Sorption ; Surface Properties ; 700206 - Fusion Power Plant Technology- Environmental Aspects
    Source: SciTech Connect (U.S. Dept. of Energy - Office of Scientific and Technical Information)
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  • 10
    Language: English
    Description: An oxygen stabilized intermetallic compound having the formula Zr/sub x/OV/sub y/ where X 0.7 to 2.0 and Y 0.18 to 0.33 is claimed. The compound is capable of reversibly sorbing hydrogen at temperatures from -196/sup 0/ C to 450/sup 0/ C and at pressures down to 10/sup -6/ torr. The compound is also capable of selectively sorbing hydrogen from gaseous mixtures in the presence of CO and CO/sub 2/.
    Keywords: 08 Hydrogen ; Materials Science ; Hydrogen Storage ; Vanadium Hydrides ; Zirconium Hydrides ; Vanadium Alloys ; Sorptive Properties ; Zirconium Alloys ; Intermetallic Compounds ; Oxygen ; Sorption ; Stabilization ; Alloys ; Elements ; Hydrides ; Hydrogen Compounds ; Nonmetals ; Storage ; Surface Properties ; Transition Element Compounds ; Vanadium Compounds ; Zirconium Compounds 080201 -- Hydrogen-- Chemisorption Storage ; 360105 -- Metals & Alloys-- Corrosion & Erosion
    Source: SciTech Connect (U.S. Dept. of Energy - Office of Scientific and Technical Information)
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