88 results about "Amorphous diamond" patented technology

The invention relates to a coated dental screw for retaining and securing components of a dental prosthetic implant stack. The screw is coated with a hard carbon coating / film to provide a low friction surface finish which advantageously results in improved preloading of the screw, and hence a high clamping force between the components of the dental prosthetic implant stack. The coating can comprise diamond-like carbon (DLC), amorphous diamond, crystalline diamond, or a combination thereof. The dental screw can include abutment retaining screws and prosthesis retaining screws. Other advantages provided by the hard carbon coating include high mechanical surface hardness, biocompatibilty, corrosion resistance, chemical inertness and low cost.

A sliding component, particularly a disk valve plate. The sliding component includes a multi-layer surface structure comprising a strengthening layer harder than the substrate material, and an amorphous diamond top layer.

A method and article of manufacture of amorphous diamond-like carbon. The method involves providing a substrate in a chamber, providing a mixture of a carbon containing gas and hydrogen gas with the mixture adjusted such that the atomic molar ratio of carbon to hydrogen is less than 0.3, including all carbon atoms and all hydrogen atoms in the mixture. A plasma is formed of the mixture and the amorphous diamond-like carbon film is deposited on the substrate. To achieve optimum bonding an intervening bonding layer, such as Si or SiO2, can be formed from SiH4 with or without oxidation of the layer formed.

Diamond-like carbon based thermoelectric conversion devices and methods of making and using the same which have improved conversion efficiencies and increased reliability. The device can include a cathode having a base member with a layer of diamond-like carbon material such as amorphous diamond coated over the cathode. A dielectric intermediate member can be electrically coupled between the diamond-like carbon material and an anode. Various additional layers and configurations can allow for improved performance such as multiple cathode layers and / or multiple intermediate layers. The thermoelectric conversion devices can be configured as an electrical generator and / or a cooling device and can be conveniently formed. In addition, the devices of the present invention do not require formation of a vacuum space and are typically completely solid throughout. As a result, the devices of the present invention are susceptible of mass production at reduced costs and have improved conversion efficiencies and reliability.

Diamond-like carbon based thermoelectric conversion devices and methods of making and using the same, which have improved conversion efficiencies and increased reliability. The device can include a cathode having a base member with a layer of diamond-like carbon material such as amorphous diamond coated over the cathode. A dielectric intermediate member can be electrically coupled between the diamond-like carbon material and an anode. Various additional layers and configurations can allow for improved performance such as multiple cathode layers and / or multiple intermediate layers. The thermoelectric conversion devices can be configured as an electrical generator and / or a cooling device and can be conveniently formed. In addition, the devices of the present invention do not require formation of a vacuum space and are typically completely solid throughout. As a result, the devices of the present invention are susceptible to mass production at reduced costs and have improved conversion efficiencies and reliability.

The invention relates to a cover, a mobile communications apparatus and a method for producing a coated cover for an electronic apparatus. According to the invention at least a part of the cover is coated with a DLC-coating, also called an amorphous diamond coating.

Bulk, superhard, B-C-N nanocomposite compact and method for preparing thereof. The bulk, superhard, nanocomposite compact is a well-sintered compact and includes nanocrystalline grains of at least one high-pressure phase of B-C-N surrounded by amorphous diamond-like carbon grain boundaries. The bulk compact has a Vicker's hardness of about 41-68 GPa. It is prepared by ball milling a mixture of graphite and hexagonal boron nitride, encapsulating the ball-milled mixture, and sintering the encapsulated ball-milled mixture at a pressure of about 5-25 GPa and at a temperature of about 1000-2500 K.

The invention relates to provides a solidly mounted film bulk acoustic resonator (SMR-FBAR) and a method for preparing a fully insulated Bragg reflecting grating thereof. The invention solves the problem that parasitic capacitance exists in application of the existing SMR-FBAR, so that the electroacoustic performance of the device is substantially reduced and unstable. The resonator is characterized in that a piezoelectric oscillation pile of sandwich structure, which is formed by upper and lower electrodes and a piezoelectric film, is directly grown on the fully insulated Bragg reflecting grating; and the fully insulated Bragg reflecting grating is formed by alternating 3-7 groups of high / low impedance film layers. The method comprises the following steps: 1. designing a system; 2. cleaning a substrate; 3. depositing a first low impedance SiO2 film layer; 4. depositing silicon as an adhesive layer; 5. depositing a first high impedance amorphous diamond film layer; 6. depositing silicon film as an adhesive layer; and 7. depositing a second low impedance SiO2 film layer. The invention is suitable for the application fields requiring stable electroacoustic performance.

A seal is disclosed. The seal has a first surface and a second surface disposed in a plane generally parallel to the first surface. At least one of the first surface and the second surface is at least partially coated with a film that includes an adhesion layer, a transition layer, and an amorphous diamond-like (a-DLC) layer.

A method for manufacturing bearing components of high precision and hardness supporting fluid dynamic-pressure comprises the steps of: (1) selecting at least one rotary component provided with a predetermined surface pattern for supporting a distribution of fluid dynamic-pressure; (2) forming an opaque and hard amorphous diamond (DLC, a-D) film (or nano-crystalline diamond film) on the pivotal surface of the component by physical vapor deposition (PVD). Thereby the pivotal surfaces of the rotary component and the pattern thereon can have excellent hardness, wearing resistance, rotational stailbity and durability under repeated urging of dynamic fluid pressure.

An electroluminescence device having improved luminescence per volt input is provided. The device can include a first electrode, a second electrode, a diamond-like carbon layer electrically coupled to at least one of the first electrode or the second electrode, and a luminescent material electrically coupled to the diamond-like carbon layer, to the first electrode, and to the second electrode, such that upon receiving electrons from the diamond-like carbon layer, the luminescent material luminesces. The diamond-like carbon layer and the luminescent material can be separated by a dielectric material. As the frequency of an introduced alternating current is increased, the level of luminosity of the luminescent material increases, and the voltage required to generate similar levels of luminosity decreases.

Optical and optoelectronic articles incorporating an amorphous diamond-like film are disclosed. Specifically, the invention includes optical or optoelectronic articles containing an amorphous diamond-like film overlying two or more proximate substrates, and to methods of making optical and optoelectronic articles. In certain implementations, the film comprises at least about 30 atomic percent carbon, from about 0 to about 50 atomic percent silicon, and from about 0 to about 50 atomic percent oxygen on a hydrogen-free basis. Another embodiment includes optical or optoelectronic articles containing an amorphous diamond-like film that is further coated with a metallic or polymeric material for attachment to a device package.

A method for impressing holographic images or holograms in the surface of metal objects such as aluminum cans, sheet metal or metal foil. The surfaces of metal shims and print rolls bearing holograms are hardened as by coating them with thin amorphous diamond coatings or diamond like coatings so the holograms can be embossed into many thousands of metal objects with clarity and consistency.

The invention discloses an aluminum-containing diamond-like carbon film and a method for preparing the same. The film adopts a diamond-like structure and comprises 3 to 20 percent of metal aluminum and the balance of carbon; the metal aluminum is dispersed in the amorphous diamond-like carbon film in an atomic state and is not bonded with the carbon, and the thickness of the film is between 500 and 5,000 nanometers. The aluminum containing diamond-like carbon film has the advantages of lower internal stress, higher hardness, good film-substrate bonding force and good abrasion proof property.

Methods of synthesizing a diamond material, particularly nanocrystalline diamond, diamond-like carbon and bucky diamond are provided. In particular embodiments, a composition including a carbon source, such as coal, is subjected to addition of energy, such as high energy reactive milling, producing a milling product enriched in hydrogenated tetrahedral amorphous diamond-like carbon compared to the coal. A milling product is treated with heat, acid and / or base to produce nanocrystalline diamond and / or crystalline diamond-like carbon. Energy is added to produced crystalline diamond-like carbon in particular embodiments to produce bucky diamonds.

Semiconductor-on-diamond devices and methods for making such devices are provided. In one aspect, for example, a method for making a semiconductor-on-diamond substrate is provided, including depositing a conformal amorphous diamond layer on a single crystal Si base layer, thereby forming in situ a single crystal SiC layer therebetween, removing the amorphous diamond layer to expose the SiC layer, and epitaxially depositing a single crystal diamond layer on the SiC layer.

The invention discloses a preparation method of a high-hardness conductive carbon-based thin film. The preparation method of the high-hardness conductive carbon-based thin film comprises the steps ofplacing an ultrasonically cleaned conductive metal workpiece in a vacuum chamber of a vacuum coating device, and carrying out ion etching and activating; then adopting a bipolar pulse direct-current power supply, sequentially passing through a Cr metal target and a WC target, and forming a Cr-WC transition layer; preparing a hydrogen-containing amorphous diamond-like coating on the Cr-WC transition layer; and rising the temperature to 430 to 600 DEG C in a heat treatment device, preserving heat, and obtaining the high-hardness conductive carbon-based thin film. According to the preparation method of the high-hardness conductive carbon-based thin film provided by the invention, in the diamond-like coating (DLC), the content of sp3C-C is high, high hardness is obtained, meanwhile, the conductivity is reduced, and the diamond-like coating / carbon-based thin film with high adhesion, high hardness and conductivity equivalent to graphite is obtained.

The present invention relates to an article with cross-slip components, more concretely, discloses a faucet including a first valve plate comprising a base material and a strengthening layer provided above the base material. An amorphous diamond material is provided above the strengthening layer. The amorphous diamond material has a coefficient of friction that is lower than that of diamond-like carbon and has a hardness that is greater than that of diamond-like carbon.

The invention discloses a metal particle-amorphous diamond composite anode for a fuel cell and a preparation method thereof. In the anode, a doped amorphous diamond film and metal nanoparticles are deposited on a substrate of the anode in sequence from bottom to top, wherein the doped amorphous diamond film contains carbon, hydrogen, oxygen and a current carrier doping agent; the current carrier doping agent is any one of boron, nitrogen or phosphorus; the metal nanoparticles are any one or any more than two alloys of platinum, ruthenium or palladium; and the composite anode comprises the following components in percentage by mass: 58.7 to 77.5 percent of carbon, 0 to 14.0 percent of hydrogen, 6.4 to 15.3 percent of oxygen, 1.7 to 8.5 percent of current carrier doping agent, and 3.2 to 13.4 percent of metal nanoparticles. The metal particle-amorphous diamond composite anode has simple preparation technology, can be used as an anode material of alcohol fuel cells, and has good catalytic capability.

The present invention provides materials, devices, and methods for generation of electricity from solar power. In one aspect, the present invention includes a solar cell, including a first conductor, a doped silicon layer in electrical communication with the first conductor, a nanodiamond layer in contact with the doped silicon layer, a doped amorphous diamond layer in contact with the nanodiamond layer, and a second conductor in electrical communication with the doped amorphous diamond layer.

The a-Si:H solaode and preparing method which regards the boron-doping amorphous diamond film as window layer, it relates to a amorphous silicon solaode and preparing method. It resolves the problems of low transform efficiency of current p type amorphous silicon solaode. The upper surface of the corning glass (1) is connected with the lower surface of the SnO2:F conducting film (2), the upper surface of the SnO2:F conducting film (2) is connected with the lower surface of the p-ta-C:B film (3), the upper surface of the p-ta-C:B film (3) is connected with the lower surface of the transition p-a-Si:H(C) film (4), the upper surface of the transition p-a-Si:H(C) film (4) is connected with the lower surface of the i-a-Si:H film (5), the upper surface of the i-a-Si:H film (5) is connected with n-a-Si:H film (6). The method of the invention possesses following steps: a. depositing the SnO2:F conducting film, b. scoring with laser, c. depositing p-ta-C:B film, d. depositing transition p-a-Si:H(C) film, i-a-Si:H film and n-a-Si:H film, e. scoring with silicon firstly, f. evaporation of aluminum, g. scoring with silicon secondly. The invention possesses advantages of increasing transform efficiency of battery.

The invention relates to a plastic member comprising a polymer substrate. A metal texture film and a diamond-like carbon film, the metal texture film is selected from silicon nitride, silicon carbide, titanium carbide and a mixture thereof; the diamond-like carbon film is selected from a hydrogenated amorphous diamond-like carbon film or a nitriding amorphous diamond-like carbon film, and the thickness of the class diamond carbon film is between 5 and 50 nanometers. Because the metal texture film and the diamond-like carbon film both are not conducted, wireless transmission is not influenced when the plastic member is used as a shell of an electronic product having a wireless communication function, and the plastic member has the luster of the metal so that people has richer choices on the appearance of the electronic product.

The invention relates to a light-emitting diode (LED) printed circuit board and a preparation method of an amorphous diamond heat dissipation and insulation film layer thereof, in particular to an LED printed circuit board and a preparation method of a heat dissipation and insulation dual-efficacy film layer thereof. In the invention, the problem of poor heat dissipation effect of the existing LED printed circuit board because the hard-and-fast requirement of electric insulation is limited is solved, and an LED printed circuit board and a preparation method of an amorphous diamond heat dissipation and insulation film layer thereof are provided. The circuit board is formed by adding the amorphous diamond heat dissipation and insulation film layer between a printed circuit board and a copper circuit. The preparation method comprises the following concrete steps: (1) cleaning: cleaning the LED printed circuit board by deionized water, and blow-drying the LED printed circuit board; (2) etching: etching the amorphous diamond depositing surface of the LED printed circuit board by a Kaufman ion gun; and (3) depositing: alternately depositing carbon ions by adopting different negative bias to gradually form the heat dissipation and insulation dual-efficacy film layer of an amorphous diamond film formed by alternately constructing a sub-film layer with low stress and a sub-film layer with high sp3 hybridization content. The invention is suitable for printed circuit boards.

Solar cells and related methods using thin layers of amorphous diamond. A thin layer of amorphous diamond is in electrical communication with a conductor. The use of a thin layer of amorphous diamond helps to reduce back conversion of excited electrons to heat. Reduced back conversion in turn can provide an increase in the efficiency of solar cells using the presently disclosed techniques.