Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 5271971 | Microwave plasma CVD method for coating a substrate with high thermal-conductivity diamond material A two-stage microwave plasma CVD process is disclosed for making a CVD diamond material, substantially free of voids, which has an average crystallite size greater than about 15 microns, a maximum intensity of the diamond Raman peak in counts/sec divided ... | 12/21/1993 |
| 5270028 | Diamond and its preparation by chemical vapor deposition method A diamond having improved properties is produced by a method which comprises introducing a mixture of hydrogen (A), an inert gas (B) and a carbon-containing compound (C) in molar ratios which satisfy the following equations: ##EQU1## generating ... | 12/14/1993 |
| 5270029 | Carbon substance and its manufacturing method A carbon film consisting of diamond powder contains nitrogen and boron therein. In the light of the addition of nitrogen and boron, the diamond is fabricated without growing defects and the film make in sturdy mechanical contact with the underlying surfac... | 12/14/1993 |
| 5268201 | Composite diamond grain and method for production thereof A composite diamond grain which comprises a heat-resistant grain as a nucleus and discrete diamond crystal particles distributed on the surface of the grain or diamond crystal films formed to cover the entire surface of the grain and a method for producin... | 12/07/1993 |
| 5264071 | Free standing diamond sheet and method and apparatus for making same The bond strength between a diamond and the substrate onto which it is deposited by the chemical vaporization method is decreased to the point where the diamond can be removed from the substrate as a free standing monolithic sheet. The bond strength can b... | 11/23/1993 |
| 5260106 | Method for forming diamond films by plasma jet CVD A diamond film is deposited on a surface of a substrate. The diamond film is attached securely to the substrate by forming a first layer on the surface comprising a mixture of a main component of the substrate and a sintering reinforcement agent for diamo... | 11/09/1993 |
| 5258206 | Method and apparatus for producing diamond thin films The present invention concerns a method of producing a diamond thin film. A plasma-activated gas, obtained by exciting a starting material containing a carbon source gas, is brought into contact with a surface of a substrate, on which a diamond thin film ... | 11/02/1993 |
| 5252174 | Method for manufacturing substrates for depositing diamond thin films A method for manufacturing substrates for depositing diamond thin films is disclosed. In the method, a hydrocarbon gas is discharge-decomposed, products generated by the discharge decomposition are accelerated to implant them in a surface layer of a subst... | 10/12/1993 |
| 5250149 | Method of growing thin film A heating process for producing a high quality diamond or c-BN film on a diamond or c-BN substrate comprising placing a diamond or c-BN substrate in vacuum, elevating the temperature and treating its surface with a chlorine containing gas, a fluorine cont... | 10/05/1993 |
| 5242711 | Nucleation control of diamond films by microlithographic patterning A high temperature resist process is combined with microlithographic patterning for the production of materials, such as diamond films, that require a high temperature deposition environment. A conventional polymeric resist process may be used to deposit ... | 09/07/1993 |
| 5234724 | Low energy ion doping of growing diamond by CVD A diamond growing by chemical vapor deposition is exposed to a low energy beam of ionized dopant. The ion beam energy is sufficient to implant the dopant in the growing surface of the diamond. This doping method will work well for any dopant that is subst... | 08/10/1993 |
| 5230931 | Plasma-assisted CVD of carbonaceous films by using a bias voltage Diamond films or I-Carbon films can be formed on a surface of an object by virtue of plasma-assisted chemical vapor deposition. The hardness of the films can be enhanced by applying a bias voltage to the object during deposition.... | 07/27/1993 |
| 5221501 | Method of producing a smooth plate of diamond An improved method of producing transparent diamond laminates employs a substrate which is removed once a second layer is deposited over the diamond coating, thereby exposing a smooth diamond surface. The second coating should have a refractive index subs... | 06/22/1993 |
| 5221411 | Method for synthesis and processing of continuous monocrystalline diamond thin films Disclosed is a method for the development of diamond thin films on a non-diamond substrate. The method comprises implanting carbon ions in a lattice-plane matched or lattice matched substrate. The implanted region of the substrate is then annealed to prod... | 06/22/1993 |
| 5217700 | Process and apparatus for producing diamond film A process and apparatus for producing a diamond film from a gas phase, in which a fuel gas is burnt by oxygen gas in a torch, to thereby provide a gas flame jet having a high temperature and high speed sufficient to form a high quality diamond film on a s... | 06/08/1993 |
| 5215788 | Combustion flame method for forming diamond films When a mixture of gases containing carbon is burned to form a film of diamond on a surface of a substrate held at an appropriate temperature, it is so burned as to form a substantially flat region of incomplete combustion lying in parallel to the substrat... | 06/01/1993 |
| 5209812 | Hot filament method for growing high purity diamond A method of growing high purity diamond crystallite structures at relatively high growth rates on a temperature resistant substrate, comprising (a) flowing diamond producing feed gases at low pressure through a reaction chamber containing the substrate, t... | 05/11/1993 |
| 5209916 | Conversion of fullerenes to diamond A method of forming synthetic diamond on a substrate is disclosed. The method involves providing a substrate surface covered with a fullerene or diamond coating, positioning a fullerene in an ionization source, creating a fullerene vapor, ionizing fullere... | 05/11/1993 |
| 5204145 | Apparatus for producing diamonds by chemical vapor deposition and articles produced therefrom An improved method and apparatus are disclosed for producing large area diamond depositions. A mixture of a carbon compound such as methane, hydrogen and argon is introduced into a DC arc plasma torch to form a plasma jet. The plasma jet is directed and t... | 04/20/1993 |
| 5201986 | Diamond synthesizing method A diamond synthesizing method introduces a mixed gas of hydrocarbon gas and hydrogen gas into a reaction vessel (9) which is maintained under a pressure of 1 to 100 Torr. A dc discharge is caused across a cathode (1) and an anode (2), thereby depositing d... | 04/13/1993 |
| 5202571 | Electron emitting device with diamond An electron emitting device is provided with a p-semiconductor layer formed on a semiconductor substrate. The p-semiconductor layer is composed of a diamond layer.... | 04/13/1993 |
| 5200231 | Method of manufacturing polycrystalline diamond layers Method of manufacturing polycrystalline diamond layers, in which diamond crystallites are deposited by means of Chemical Vapour Deposition (CVD) on a substrate heated to a temperature ranging between 450° and 1200° C. from a gas phase comprising hydroge... | 04/06/1993 |
| 5198070 | Joining diamond bodies A method of joining diamond bodies which includes the steps of positioning the bodies such that a surface of one body is close to a surface of the other body and a space is provided therebetween, growing diamond on the surfaces by chemical vapor depositio... | 03/30/1993 |
| 5192523 | Method for forming diamondlike carbon coating A method of depositing a diamondlike carbon coating on a substrate. An ionized beam of pure methane or methane and hydrogen, and having an ion kinetic energy in the range of 500-1,000 eV is impinged on a substrate to deposit, thereon, a diamondlike carbon... | 03/09/1993 |
| 5190734 | Modified end assembly for high pressure, high temperature reaction vessels An end cap apparatus for high pressure, high temperature reaction vessels having a reaction chamber containing a reaction charge includes a single member disposed in registry with the reaction charge in the reaction chamber which is formed of at least two... | 03/02/1993 |
| 5190823 | Method for improving adhesion of synthetic diamond coatings to substrates Adhesion of diamond coatings formed by chemical vapor deposition to substrates, particularly molybdenum substrates, is improved by employing an auxiliary substrate comprising elemental or chemically combined silicon, from which a silane is believed to dif... | 03/02/1993 |
| 5183685 | Diamond film deposition by ECR CVD using a catalyst gas Diamond films can be formed on a surface by virtue of a microwave energy. A catalyst gas is introduced into a reaction chamber for ECR CVD, along with a carbon compound gas. The catalyst gas consists of a gaseous compound of nickel, germanium and/or manga... | 02/02/1993 |
| 5183529 | Fabrication of polycrystalline free-standing diamond films Method of fabricating free-standing diamond films by depositing and adhering polycrystalline diamond by hot filament chemical vapor deposition (1-100 Torr, filament temperature equal to or greater than 1900° C., substrate temperature of 650°-950° C.) o... | 02/02/1993 |
| 5182093 | Diamond deposition cell In a first embodiment of an improved diamond deposition cell, a chamber is evacuated to a low pressure and a graphite element in the chamber is heated to a selected high temperature and heats a substrate positioned within the chamber spaced by a selected ... | 01/26/1993 |
| 5180571 | Process for the preparation of diamond An interrupting layer of inorganic powder other than diamond is formed on the surface of a substrate and a surface of the interrupting layer is contacted with excited raw material gases containing a carbon source, under conditions suited to depositing of ... | 01/19/1993 |
| 5176788 | Method of joining diamond structures A process for bonding two diamond surfaces together by (1) forming a layer of opaque nondiamond carbon material between the two mond surfaces; (2) pressing the diamond surfaces together with the opaque nondiamond material sandwiched between the diamond surfac... | 01/05/1993 |
| 5174983 | Flame or plasma synthesis of diamond under turbulent and transition flow conditions A method for synthesizing diamond which comprises flowing together a gaseous carbon source and a gaseous hydrogen source to form an at least partially turbulent mixture. The at least partially turbulent mixture is excited to form an at least partially tur... | 12/29/1992 |
| 5171607 | Method of depositing diamond-like carbon film onto a substrate having a low melting temperature A diamond-like carbon film is deposited on an insulating substrate using a solid carbon source evaporated by an electron beam so as to maintain the substrate temperature below about 150° C. in a differentially evacuated chamber containing a selective etc... | 12/15/1992 |
| 5169676 | Control of crystallite size in diamond film chemical vapor deposition In depositing an adhering, continuous, polycrystalline diamond film of optical or semiconductor quality on a substrate, as by forming on the substrate a layer of a refractory nitride interlayer and depositing diamond on the interlayer without mechanical t... | 12/08/1992 |
| 5155559 | High temperature refractory silicide rectifying contact A semiconductor device comprising a semiconducting diamond layer, (e.g. single crystal or polycrystalline), a refractory metal silicide layer adjacent the diamond layer for forming a rectifying contact therewith, and an annealed interface region between t... | 10/13/1992 |
| 5154945 | Methods using lasers to produce deposition of diamond thin films on substrates Infrared lasers are used to deposit diamond thin films onto a substrate. In one embodiment, the deposition of the film is from a gas mixture of CH4 and H2 that is introduced into a chemical vapor deposition chamber and caused to flow... | 10/13/1992 |
| 5153753 | Active matrix-type liquid crystal display containing a horizontal MIM device with inter-digital conductors The invention is directed to an active matrix-type liquid crystal display using a horizontal MIM device as a non-linear resistance device. The layers of the metal-insulator-metal elements are formed in a horizontal direction and use a hard carbon film as ... | 10/06/1992 |
| 5145711 | Cyclotron resonance chemical vapor deposition method of forming a halogen-containing diamond on a substrate Diamond films or i-carbon films can be formed on a surface by virtue of cyclotron resonance chemical vapor deposition. The characteristics such as transmissivity, conductivity and hardness of the films can be easily controlled by introducing a halogen int... | 09/08/1992 |
| 5146481 | Diamond membranes for X-ray lithography A substantially compressive stress-free, pin-holes free, and defects free continuous polycrystalline diamond membrane for an x-ray lithography mask is produced by placing a prepared substrate into a hot filament chemical vapor deposition reaction chamber,... | 09/08/1992 |
| 5142390 | MIM element with a doped hard carbon film Disclosed herein is an MIM device having a hard carbon film as the insulator. The hard carbon film contains at least one of the following elements: a group III element, a group IV element, a group V element, an alkali metal element, an alkaline earth meta... | 08/25/1992 |
