Abstract:
The present invention relates to a method for coating a medical implant, wherein the implant is submersed in an aqueous solution of magnesium, calcium and phosphate ions through which a gaseous weak acid is passed, the solution is degassed, and the coating is allowed to precipitate onto the implant. The invention further relates to a medical implant coated in said method and to a device for use in said method.
Abstract:
A method of applying a matching layer to a transducer includes placing the transducer on a fixture and covering the transducer with a stencil so that an opening in the stencil allows access to a metal-coated, piezoelectric surface of the transducer, and so that the stencil is affixed to the transducer surface. A roughly cylindrically shaped bead of epoxy is extruded onto the stencil at a predetermined distance from the opening, and a blade is positioned upstanding relative to the transducer surface and located so that the bead lies between the blade and the opening. The fixture is moved laterally so that the blade rolls the bead across the exposed transducer surface to form a layer of epoxy thereon. The fixture can then be moved back in the opposite direction to its initial position if desired. The assembly can also be subjected to a vacuum before the fixture is returned to its initial position. If desired, the fixture can be designed to vibrate during movement. Also if desired, the epoxy bead can initially be placed in a trough designed to decrease surface-area exposure to the air. Alternatively, the fixture can be kept stationary while the blade is moved.
Abstract:
A system and method using microcoded marks provides retrospective identification of articles. An article is marked with microparticles having multiple layers. The particles form a unique spatial pattern on the article. An image is made of the mark as applied to the article. The digitized image is stored in a database with information about the article. The database can be accessed by users to verify the authenticity of an article.
Abstract:
In a method for forming a trench capacitor a first layer of silicon oxide is deposited in a storage trench and a layer of silicon is deposited over the first layer by a chemical vapor deposition process. A layer of an oxidizable metal is deposited over the layer of silicon. The layer of silicon and the layer of the oxidizable metal are subsequently oxidized to form a layer of silicon oxide and metal oxide.
Abstract:
A method for depositing a metal having a high corrosion resistance and a low contact resistance against carbon to a separator for a fuel cell enabling provision of an inexpensive separator for a fuel cell by depositing a metal having a high corrosion resistance and a low contact resistance against carbon to the surface of a metal conveniently by simple equipment while using as a preform a metal such as stainless steel or aluminum as a material having a high productivity and low price and in addition capable of reducing the weight by making the sheet thickness thin, comprising projecting to a separator of a unit cell for forming the fuel cell a solid plating material comprised of core particles having a higher hardness than the separator and coated with a metal having a high corrosion resistance and a low contact resistance against carbon so as to compulsorily deposit the metal coated on this solid plating material to the separator.
Abstract:
A nanopatterned template for use in manufacturing nanoscale objects. The nanopatterned template contains a nanoporous thin film with a periodically ordered porous geomorphology which is made from a process comprising the steps of: (a) using a block copolymerization process to prepare a block copolymer comprising first and second polymer blocks, the first and second polymer blocks being incompatible with each other; (b) forming a thin film under conditions such that the first polymer blocks form into a periodically ordered topology; and (c) selectively degrading the first polymer blocks to cause the thin film to become a nanoporous material with a periodically ordered porous geomorphology. In a preferred embodiment, the block copolymer is poly(styrene)-poly(L-lactide) (PS-PLLA) chiral block copolymer, the first polymer is poly(L-lactide), and the second polymer is polystyrene. Experimental results show that the first polymer blocks can be formed into a hexagonal cylindrical geomorphology with its axis perpendicular to a surface of the thin film. After hydrolysis to selectively degrade the first polymer blocks, a thin film having a series of repeated nanoscale hexagonal-cylindrical channels is obtained.
Abstract:
A method for plating tin or a tin alloy on a substrate such that whiskers are prevented form forming or the number of whickers is reduced in number as well as size.
Abstract:
A system for controlled dispensing of a material onto an elongated window component. A nozzle dispenses the material into contact with a surface of the elongated window component at a delivery site located along a path of travel of the elongated window component. A conveyer moves the elongated window component along the path of travel relative to the nozzle at a controlled speed. A metering pump delivers controlled amounts of the material to the nozzle. A pressurized bulk supply delivers the material to an inlet to the metering pump. A controller regulates the speed of the metering pump to control the flow rate of the material dispensed by the nozzle.
Abstract:
To provide a pattern formation method capable of forming a pattern by cleaning a liquid droplet ejection head without exerting an effect on a liquid droplet ejection operation, when the liquid droplet ejection head stored with a storage solution is used again, a pattern formation method of forming a film pattern by disposing liquid droplets of a functional solution on a substrate, includes: filling a passage including a liquid droplet ejection head to dispose the liquid droplets and a conduit to feed the functional solution to the liquid droplet ejection head with purified water; filling the passage with a solvent dissolving both a solvent contained in the functional solution and the purified water; filling the passage with the solvent contained in the functional solution; forming banks corresponding to the film pattern on the substrate; and disposing the liquid droplets into grooves between the banks with the liquid droplet ejection head.
Abstract:
A device and a method used when coating a wafer is described. The fluid coating is provided by an inside coating as well as an edge coating. The fluid chocolate in a container is stirred by displacing a vat up and down. During this displacement, the vat will be brought in contact with the wafer, so the chocolate substance, which is provided in there, provides an edge coating. Displacement of the first vat provides a repression of the chocolate substance, which through a nozzle is injected into the wafer in order to provide an inside coating. By repression, a pumping occurs, which is interrupted substantially simultaneously with the edge of the wafer getting in contact with the surface of the chocolate in vat, when it is elevated up towards the wafer, which is suspended in a commonly known apron conveyor (not shown).