64results about How to "Avoid rough surfaces" patented technology

A method of forming an optical device comprises applying a laser beam to a target area of the surface so as to selectively heat material of the surface thereby to provide transfer of material due to a surface tension gradient, wherein the surface is such that, when liquid, parts of the surface at higher temperatures have a higher surface tension than adjacent parts of the surface at lower temperatures.

An X-ray anode is produced by scoring at least a region of a surface of the anode, on which electrons are incident, with a number of defined microslits, thereby making the surface, or at least the region thereof, highly thermally stressable.

Disclosed herein is a bat comprising a handle portion, a transition portion attached to the handle portion, and a barrel portion attached to the transition portion. The barrel portion includes one or more first cross-sections having a first stiffness and a plurality of second cross-sections having a second stiffness. Each first cross-section is beside one second cross-section or between two of the second cross-sections and the first stiffness is greater than the second stiffness. The variance in stiffness between the first cross-sections and the second cross-sections is created by varying the amount of material in the cross-section or by, more accurately, removing material in the second cross sections to make the second cross-sections more flexible by creating holes.

To provide glass for an information recording medium substrate, which is excellent in the acid resistance and weather resistance. Glass for an information recording medium substrate, which comprises, as represented by mol % based on the following oxides, from 61 to 72% of SiO2, from 3 to 12% of Al2O3, from 0 to 14.3 of Li2O, from 0 to 22% of Na2O, from 0 to 22% of K2O, from 4 to 13% of MgO, from 0 to 6% of TiO2 and from 0 to 5% of ZrO2, provided that the total content of Li2O, Na2O and K2O (R2O) is from 8 to 22%, the ratio of the content of Li2O to R2O (Li2O/R2O) is at most 0.52, the ratio of the content of Na2O to R2O (Na2O/R2O) is at least 0.35, or the ratio of the content of K2O to R2O (K2O/R2O) is at least 0.45.

The invention relates to a wood plastic composite material and a preparation method thereof, in particular to a straw, a rice husk fiber base wood plastic composite material and a preparation thereof. The straw and the rice husk fiber base wood plastic composite material comprise the following components according to weight percentage: melamine resin: 3.5 percent; the straw and the rice husk fiber or the mixture of the straw and the rice husk: 60 percent; polyethylene with low density: 32 percent; solubilizer: 2 percent and lubricant: 2.5 percent. The wood plastic composite type building material of the invention adopts high technology, and utilizes waste plastics and a large amount of straw (rice straw, rice husk) powder to mix and extrude various formed hollow sectional materials of wood plastic at high temperature by fiber strengthening, and the wood plastic composite material is a typical environmental-friendly material. The wood plastic composite material is characterized by sun block, waterproof, anti-moth, anti-freezing and anticorrosion, and the wood plastic composite material without formaldehyde is strong in wood sense, high in surface hardness, strong in wear resistance, good in antiaging, long in service life, easy in processing, is suitable for the preferable material of decoration indoors and outdoors, and is similar to wood in shape but better than wood in property.

There are provided a gate electrode formed on a semiconductor substrate of one conductivity type via a gate insulating film, ion-implantation controlling films formed on both side surfaces of the gate electrode and having a space between the gate electrode and an upper surface of the semiconductor substrate, first and second impurity diffusion regions of opposite conductivity type formed in the semiconductor substrate on both sides of the gate electrode and serving as source/drain, a channel region of one conductivity type formed below the gate electrode between the first and second impurity diffusion regions of opposite conductivity type, and pocket regions of one conductivity type connected to end portions of the impurity diffusion regions of opposite conductivity type in the semiconductor substrate below the gate electrode and having an impurity concentration of one conductivity type higher than the channel region.

The invention relates to a testing method based on landing movement foot area and shoe sole finite element modeling. The method comprises the steps that S1, CT scanning data of a foot area is collected; S2, a foot area geometric model is established based on the collected CT scanning data; S3, geometric models of a shoe sole and ground are established according to a foot area finite element model;S4, the foot area geometric model, the shoe sole geometric model and the ground geometric model are assembled to obtain foot area and shoe sole finite element models; S5, landing testing is conductedon the obtained finite element models. Compared with the prior art, the shock-absorbing performance of the shoe sole in the model can be conducted, shoe sole materials and structures can be changed at will, shoe sole and foot area force bearing situations are predicted to guide the designing and production of sneakers, and a large amount of cost is reduced compared with a traditional manner in which a real object is made and then tested after being put on a body.

A method of processing a substrate which enables a surface damaged layer and polishing remnants on the surface of an insulating film to be removed, and enable the amount removed of the surface damaged layer and polishing remnants to be controlled easily. An insulating film on a substrate, which has been revealed by chemical mechanical polishing, is exposed to an atmosphere of a mixed gas containing ammonia and hydrogen fluoride under a predetermined pressure. The insulating film which has been exposed to the atmosphere of the mixed gas is heated to a predetermined temperature.

An interconnection structure includes a first dielectric layer, a first conduction layer, a conductor pillar, an upper dielectric layer and an upper conduction layer. The first dielectric layer is disposed over a first terminal of a device. The first conduction layer is disposed over the first dielectric layer. The conductor pillar is connected to the first terminal. The upper dielectric layer is disposed over the first conduction layer. The upper conduction layer is disposed over the upper dielectric layer. The conductor pillar connects to the upper conduction layer but disconnects from the first conduction layer.

The invention discloses a plastic-wood composite material which comprises the following components in parts by weight: 2-5 parts of melamine resin, 50-70 parts of straw and rice hull fiber or combination of the two, 28-36 parts of low-concentration polyethylene, 1-5 parts of solubilizer, 1-5 parts of lubricant and 0.5-2 parts of soluble silicate. In the plastic-wood composite material disclosed by the invention, wood vinegar in the straw and rice hull fiber is quickly removed by use of the neutralization and evaporation effects generated by the melamine resin in a curing process, thus the bubble formation is avoided, and the rough surface of the plastic-wood composite material is prevented; by adding the soluble silicate into the components, the grip strength among the particles of the plastic-wood composite material is enhanced, and the nail-holding ability of a plate is improved.

The invention discloses a double-cylinder liquid cooling device, and the device comprises a base of a double-cylinder structure. The base is disposed at a position close to a heat source, and the interior of the base is provided with a water channel. Cooling liquid flows in the water channel in a circulating manner. The base is also provided with a locking structure, and the locking structure enables the flowing of the cooling liquid to be limited in the water channel, thereby preventing the leakage of the cooling liquid. According to the technical scheme of the invention, the cooling liquid flows in the water channel of the base in the circulating manner and the base is also provided with the locking structure, thereby preventing the leakage of the cooling liquid, avoiding the water leakage of a weld joint during grinding, preventing the falling of paint, avoiding a rough surface, and forming a flat surface of the base.

The invention provides a manufacturing method of a GaN field effect transistor. The method comprises the following steps: forming a passivation layer on a GaN substrate; forming an ohmic metal layer in the passivation layer, wherein the bottom of the ohmic metal layer is contacted with the GaN substrate; performing the first annealing process so as to form the ohmic contact between the ohmic metal layer and the GaN substrate, wherein the annealing temperature of the first annealing process is greater than or equal to 760 DEG C and less than and equal to 800 DEG C; performing the second annealing process to form an ohmic electrode, wherein the annealing temperature of the second annealing process is greater than or equal to the 790 DEG C and less than or equal to 830 DEG C. By using the manufacturing method of the GaN field effect transistor provided by the embodiment, the good ohmic contact and good edge morphology can be formed, the voltage withstand uniformity of the GaN field effect transistor is good, and the reliability is high.

The invention discloses a manufacturing method of a reinforced floorboard with the high surface brightness. The manufacturing method comprises the following steps that a steel plate is treated, specifically, the surface of the steel plate is polished to obtain a chrome-plated steel plate; an abrasion-resisting layer is treated, specifically, abrasion-resisting paper is dipped into abrasion-resisting paper dipping glue, taken out and made 10-40% dried; composite aluminum oxide powder is uniformly poured and sprayed on the surface of the dipped abrasion-resisting paper, and an abrasion-resisting layer is obtained; patterned paper and balance paper are dipped with composite melamine resin; the dipped patterned paper and the abrasion-resisting layer are sequentially laid on a fiberboard; and the dipped balance paper is laid under the fiberboard, hot pressing is conducted through the chrome-plated steel plate, and the reinforced floorboard with the high surface brightness is obtained. The surface brightness of the floorboard manufactured through the manufacturing method can reach up to 100+/-10 degree, and the floorboard is obviously superior to ordinary floorboards. The floorboard is firm, high in corrosion resistance and long in service life, and the brightness is not prone to weakening in the use process.