50results about How to "Reduce material stress" patented technology

An enhancement-mode GaN-based HEMT device on Si substrate and a manufacturing method thereof. The device includes a Si substrate, an AlN nucleation layer, AlGaN transition layers, an AlGaN buffer layer, a low temperature AlN insertion layer, an AlGaN main buffer layer, an AlGaN/GaN superlattice layer, an GaN channel layer), and an AlGaN barrier layer. Both sides of a top end of the HEMT device are a source electrode and a drain electrode respectively, and a middle of the top end is a gate electrode. A middle of the AlGaN barrier layer is etched through to form a recess, and a bottom of the recess is connected to the GaN channel layer. A passivation protective layer and a gate dielectric layer are deposited on the bottom of the recess, and the gate electrode is located above the dielectric layer.

The invention relates to a connection of two coaxially in-line elements in a fuel supply system of an internal combustion engine, in which the first element is preferably a receiving bush of a fuel distributor line (1) with a guide opening, and the second element, embodied as a pressure regulating valve (8) or pressure chamber, is insertable by a guide portion (19) into the guide opening (18) of the receiving bush (3), which facing one another in a wall (30) has two retention openings (31), aligned both with one another and with a retention groove (37) in the pressure regulating valve (8), which openings a U-shaped retention clamp (32) projects through with its legs (34) and in so doing fixes the position of the first element (3) and second element (8) relative to one another, which elements, at least in the region of the retention clamp (32) have portions of stainless steel. Alternatively, the first element may be an injection valve, which is inserted by one end into a plug connection (2), forming the second element, of the fuel distributor line (1), where it is fixed by means of a securing clamp, and the injection valve and the plug connection (2), at least in the region of the securing clamp, have portions of stainless steel. The invention provides that the retention clamp (32) is formed by a spring wire and the securing clamp is formed of a spring band of stainless steel, in order to prevent contact corrosion.

A substrate for semiconductor light emitting devices is provided. The substrate is characterized in that the substrate is a single crystal material and has a nanocrystal structure capable of diffracting an electromagnetic wave. The nanocrystal structure is disposed on a surface portion of the substrate and includes an etched region and an unetched region, wherein the etched region has a depth of 10-200 nm. Due to the periodicity of the nanocrystal structure, the semiconductor material grown on the substrate has fewer defects, and the material stress is reduced.

An interconnection element of a spring (body) including a first resilient element with a first contact region and a second contact region and a first securing region and a second resilient element, with a third contact region and a second securing region. The second resilient element is coupled to the first resilient element through respective securing regions and positioned such that upon sufficient displacement of the first contact region toward the second resilient element, the second contact region will contact the third contact region. The interconnection, in one aspect, is of a size suitable for directly contacting a semiconductor device. A large substrate with a plurality of such interconnection elements can be used as a wafer-level contactor. The interconnection element, in another aspect, is of a size suitable for contacting a packaged semiconductor device, such as in an LGA package.

A one-piece sill pan flashing is provided with one or more accordion sections. At least the accordion sections, and preferably the entire flashings, are formed of a single sheet of thermoplastic material, preferably by thermoforming, and include forwardly and downwardly inclined upper portions and vertical lower portions extending downward from the front of the upper portions. The accordion sections include upper and lower portions, formed of narrow panels, foldably connected along their lateral edges to form V-shaped accordion folds having a series of ridge folds and valley folds. The valley folds of the upper portions are aligned with the ridge folds of the lower portions and vice versa. The construction accommodates substantial extension or compression of the width of the flashing and enables one size of flashing width to be fitted to a wide range of sizes of rough-framed window openings.

A guide bar for a saw chain includes an elongate, flat base body made of a basic material. The base body extends along a longitudinal center axis and, in order to guide a saw chain, has a running surface formed on an outer periphery thereof and a guide groove formed in the outer periphery of the base body. The guide groove has a groove base. A direction-reversing section for the saw chain is provided at one end of the base body. The direction-reversing section includes at least one add-on component having a running surface made of more wear-resistant material than the basic material of the base body. The add-on component is secured to the base body of the guide bar by at least one weld seam. The weld seam extends between the add-on component and the base body and is located spatially beneath the groove base.

A dental abutment having a coronal portion for supporting a prosthesis separated from a post for seizing, galling or cold welding in a dental implant by a cylindrical portion and hemispheric base portion of length less than the combined length of the prosthetic head and locking taper post portions. The hemispherical portion of the abutment having a sloping shoulder with a surface that forms a small angle with a perpendicular to the cylindrical surface. A dental prosthesis system including such dental abutments.

Integrated circuit field effect transistors include a substrate, an isolation region in the substrate that defines an active region in the substrate, spaced apart source/drain regions in the active region, a channel region in the active region between the spaced apart source/drain regions and an insulated gate on the channel region. A differential mechanical stress-producing region is configured to produce different mechanical stress in the channel region adjacent the isolation region compared to remote from the isolation region. The differential mechanical stress-producing region may be formed using patterned stress management films, patterned stress-changing implants and/or patterned silicide films, and can reduce undesired comer effects. Related fabrication methods also are described.

The invention relates to a glue-down decorative floor covering system. The invention also relates to a glue-down floor covering realized by a plurality of tiles of the glue-down floor covering system according to the invention. The invention further relates to a tile for use in a glue-down floor covering system according to the invention.

The invention discloses a structure net rib honeycomb concrete intervening building. A traditional greenhouse structure is upgraded and organically combined with a traditional building, especially a residence house, and the greenhouse functions intervene in the residence environment. A sunlight greenhouse constructed through a transparent material and a sunlight awning arranged at the top of the building main body are additionally arranged on the sunny side of a building main body. The sunlight awning and the building main body are provided with internal spaces which are mutually isolated or connected into a whole. The multifunctional building can be arranged in the modes of a long-span warehouse or workshop structure with a single internal space, or a quadrangle courtyard with the sunlight awning arranged over the courtyard, or a residential area formed by surrounding the courtyard through the building main body, or a business street with a courtyard provided with the sunlight awning and the like. Due to the fact that the structure net rib honeycomb concrete structure breaking traditional thinking models is adopted, the diversity of the structure and layout are greatly facilitated, and the energy conservation effect is prominent; and the building is quite suitable for living, working and rest habits of our people with the combination with traditional residences and rural buildings, and the good atmosphere for people to live and work in peace and contentment is created advantageously.

The invention relates to the field of aero-engines and gas turbines, and particularly relates to a technical method for manufacturing an aero-engine cyclone through a special processing technology. The method comprises the step of manufacturing a cyclone blank, wherein the cyclone bank is manufactured through a cylindrical forging piece. The method further comprises the step of manufacturing semi-finished cyclone and the step of finishing through pincers; the step of manufacturing the semi-finished cyclone is that the cyclone blank is sequentially subjected to turning processing and electric spark processing to obtain the semi-finished cyclone; the step of finishing through the pincers is that the semi-finished cyclone is finished based on the requirement on a finished cyclone so as to obtain the finished cyclone. According to the method, the forging piece is outstanding in mechanical property, and two processing modes are provided, so that the manufactured cyclone product is high in strength and toughness; the yield is increased; and the processing cost and the processing period are reduced; the manufactured cyclone product can stably run for a long time in an aero-engine combustion chamber; and the service life of the aero-engine combustion chamber cannot be influenced by the quality of the cyclone.

This invention relates to a gas turbine having a combustion chamber arrangement and a turbine chamber connected downstream of said combustion chamber arrangement, wherein the combustion chamber arrangement includes a plurality of individual combustion chambers formed by input areas and transition areas converging in an annular gap leading to the turbine chamber and wherein the longitudinal axes of the individual combustion chambers are placed at an angle relative to an engine axis that is defined by the axial extension of the turbine chamber. In order to improve said gas turbine by visibly reducing the thermal and mechanical loads of the individual combustion chambers in the transition area so that cooling requirements can be lowered in said area, the transition area of at least one individual combustion chamber into the turbine chamber is deflected in the direction of the engine axis and substantially in the input area of the turbine chamber.

The switching transmitter (12) has a one-piece annular body (34) rotatable around a transmission axis. The annular body has a contour (36) for rotationally fixed and axially movable coupling with a transmission shaft on its radial inner side and another contour (40) for axial coupling with an axially movable switching element on its radial outer side. The annular body has synchronization recesses (24) between the radial inner side and the radial outer side, where the axial extensions (18,20,22) of a friction ring (16) engage into the synchronization recesses. An independent claim is included for a lock-synchronized manual transmission with cams.