43 results about "Surface loss" patented technology

The invention relates to a simulated multi-angle joint network propping agent sinking law device. The simulated multi-angle joint network propping agent sinking law device comprises a plurality of organic glass plates; stripped and branch-shaped sealed space is formed due to connection of a plurality of manual cracks; factors such as the number, the length, the angle, the elasticity of the sealed space can be adjusted according to requirements; experiments can be intuitively observed through the organic glass plates and recording of the experiment data is convenient. According to the simulated multi-angle joint network propping agent sinking law device, conditions such as crack levels, crack shapes, relative angles, the crack length, wall surface losses and stratum confining pressure are fully taken into consideration, an experiment of paving conditions of the propping agent in a manual crack can truly simulate scene conditions, the experiment effect is improved, and site fracturing operation can be guided.

The invention relates to an oxygenase-bath alkali-free desizing process for a polyester/cotton high-count and high-density fabric. The process sequentially comprises the following steps of: sewing and singeing the fabric; washing the fabric with three-grid hot water; washing the fabric with two-grid coldwater; padding oxidation bleaching working solution; steaming at the temperature of 102 DEG C for 50 minutes; washing the fabric with four-grid hot water; drying; and shaping, wherein in the step of padding oxidation bleaching working solution, the formula of the oxidation bleaching working solution comprises 10g/L of high-efficient scouring agent HS-120B, 65g/L of 288 dispersing agent, 5g/L of scouring enzyme 188, 5g/L of wax regent WR, 10g/L of hydrogen peroxide stabilizing agent P and 14.0 to 15.0g/L of hydrogen peroxide (wherein the concentration is 33 percent). Compared with the prior art, the desized fabric has greatly improved quality, namely the handfeel is plump; the fabric surface loss ratio is low; the fabric surface whiteness is good; and the fabric has no cotton, multiple nodes and no alkaline spots.

The invention discloses a method for designing a dielectric reflector antenna. The dielectric reflector antenna is composed of a feed source and multiple layers of plane dielectric slabs. Phase modulation is conducted on an array face, wide angular domain beams emitted by the feed source are clustered and reflected to form narrow beams, and therefore high gain is achieved; a periodical master-slave boundary condition modeling and simulating method is adopted; influence on dielectric slab phase modulation by a dielectric constant, the magnetic conductivity, the unit gap, the operating frequency and the incident angle is analyzed, and a corresponding phase modulation curve is obtained when the thickness of dielectric changes; a structure of stacking the dielectric slabs is adopted for phase modulation; a tapered slot antenna is adopted as the feed source. An empty feeding mode is adopted and a design procedure of the dielectric reflector antenna is simplified; the dielectric reflector antenna is formed by stacking the dielectric slabs, no metal patch is arranged, surface loss is reduced, and the efficiency of the dielectric reflector antenna is improved. The dielectric reflector antenna is simple in structure, small in size, low in weight and capable of facilitating processing and installing and has the advantages of being low in loss, high in gain, low in sidelobe and wide in frequency band.

Permanent magnets are mounted within an electrical machine in a pitched saw-tooth pattern around the rotor shaft. This focused flux configuration provides for improved magnet mounting strength without resort to bonding or taping; provides improved rotor and stator cooling by access to the axial generator air flow; and provides for a simpler and more easily manufactured design. A laminated version of this basic structure provides for reduced surface losses and self-heating.

The present invention discloses a method for prolonging grinding pad life in chemical and mechanical polishing process. Said method includes the following steps: first step, measuring grinding pad groove depth and grinding pad thickness of grinding pad in different use stages so as to define cutting speed of grinding pad in different zones; second step, setting residence time of correction disk in different zones of grinding pad; third step, detecting the grinding grain of different zones of grinding pad and grinding rate for chemical and mechanical polishing; fourth step, measuring the grinding pad groove depth and grinding pad thickness of grinding pad which is used to its life; fifth step, according to the detection results obtained by above-mentioned several steps setting pressure of correction disk in the different zones of grinding pad; and sixth step, repeating third step to fifth step until the proper pressure parameter is found, making surface loss of every zone of grinding pad and groove depth be identical.

The invention relates to a mechatronic alternating current (ac) motor stator core of a compressor and a wire embedding method thereof and especially relates to an ac motor stator core of a piston refrigeration compressor used in a refrigerator. The motor stator core comprises an iron core body. A rotor aperture is arranged in a middle part of the iron core body. Wire embedding slots, which penetrate along an axial direction, are arranged along a circumferential direction of a hole wall of the rotor aperture. Inner sides of the wire embedding slots are provided with notches. A circumferential width (chord length) Bs0 of the notch is 0.1-1.0 mm. By using the stator core and the method of the invention, iron core surface losses and tooth pulse vibration losses can be reduced; an air gap coefficient is decreased; a field current is reduced; a power factor is raised so that working efficiency of the motor can be raised. Through redesigning a slot type size of the wire embedding slot, the additional losses generated by a harmonic field can be reduced so that the working efficiency of the motor can be further raised. A computer simulation experiment shows that the working efficiency of the motor can be increased by 1.5% by using the stator core of the invention. The stator core and the method is especially suitable for the single-phase asynchronous ac motor used in the totally enclosed refrigeration compressor.

A frequency comb generator fabricated on a chip with elimination of a disadvantageous reflow process, includes an ultra-high Q disk resonator having a waveguide that is a part of a wedge structure fabricated from a silicon dioxide layer of the chip. The disk resonator allows generation of a frequency comb with a mode spacing as low as 2.6 GHz and up to 220 GHz. A surface-loss-limited behavior of the disk resonator decouples a strong dependence of pumping threshold on repetition rate.

The present invention discloses a manufacturing method of an array substrate. The method comprises the steps of forming a shading layer, a buffer layer, a polycrystalline silicon layer, an insulating material, a first metal layer, an isolation layer, a second metal layer, an insulating layer and a pixel electrode layer orderly above a glass substrate; after the polycrystalline silicon layer is formed, firstly coating the insulating material above the polycrystalline silicon layer; and then using an ion Implanter to carry out the ion implantation above the insulating material, thereby forming a channel. Therefore, the problems that the ions are implanted on the polycrystalline silicon layer directly during the ion implantation process, thereby causing the surface defect of the polycrystalline silicon layer and influencing the TFT characteristic, are avoided effectively. According to the present invention, the surface loss of the polycrystalline silicon layer during the ion implantation process is improved effectively.

The invention belongs to the technical field of new energy resources of photoelectric materials, relates to a silicon slice cutting fluid and a preparation method thereof, and provides a silicon slice cutting fluid to overcome the defects that an existing silicon slice cutting fluid is high in cost, and relatively poor in dispersion and redispersion abilities on silicon carbide micro-powder. The silicon slice cutting fluid comprises the following raw materials in percentage by weight: 76wt%-80wt% of diethylene glycol, 15wt%-17wt% of polyethylene glycol, 2wt%-3.5wt% of glycerol, 0.5wt%-1.5wt% of fatty alcohol-polyoxyethylene ether, 0.7wt%-1.2wt% of deionized water, 0.2wt%-0.5wt% of a defoaming agent, 0.2wt%-0.5wt% of a dispersing agent and 0.1wt%-0.3wt% of an antioxidant. The main raw material is diethylene glycol, so that the preparation process is simple, easy to operate and low in cost; the dispersibility and the redispersibility of the silicon carbide micro-powder are effectively improved; the stability and the durability of slurry are ensured; the silicon slice cutting fluid has a good lubricating effect; the surface loss during cutting is effectively reduced; the cutting yield is improved; and the silicon slice cutting fluid is suitable for a silicon slice cutting process.

Provided is a method for etching graphene nanopores to reduce a secondary electron emission coefficient. The method combines with two different methods to coat a material having a low secondary electron emission coefficient and prepare a trap structure on the surface: the surface is coated with graphene having the low secondary electron emission coefficient, and then nanopores are prepared by adopting an argon ion etching technology. Technically, different secondary electron emission inhibiting effects are achieved by controlling the graphene coating thickness on the surface and the porosity and depth-to-width ratio of the nanopores. It is found through an experimental study that graphene with the thickness ranging from several nanometers to more than ten nanometers deposits on a metal substrate, the secondary electron emission coefficient can be reduced from about 2.0 to 1.5-1.1, and after the graphene nanopores are etched by using argon ions, the secondary electron emission coefficient of the surface is reduced to 0.9, and controllable adjustment from 1.5 to 0.9 of the electron emission coefficient is achieved. The method is simple, convenient and high in stability, and the influence on device surface insertion loss of a conducting coating with nanoscale thickness in a surface loss-less state is smaller. By the adoption of the technical scheme, the secondary electron emission coefficient can be effectively reduced, and the method has a wide application prospect in the fields of particle accelerators, vacuum transmission lines and high-power microwave components.

The invention provides a bias modulation method and system, and plasma processing equipment. The method is to load the bias power generated by a bias radio frequency source on a pedestal bearing a to-be-processed workpiece so that negative bias can be generated on the surface of the to-be-processed workpiece placed on the pedestal; and during the loading of the bias power, voltage generated by thebias radio frequency source can be increased to target voltage from initial voltage to compensate for the losing negative bias on the surface of the to-be-processed workpiece, so that the negative bias on the surface of the to-be-processed workpiece can be maintained in a preset range during the loading of the bias power. The bias modulation system is also disclosed. The disclosed plasma processing equipment includes the bias modulation system. The bias modulation method and system and the plasma processing equipment can maintain the negative bias on the surface of the to-be-processed workpiece in the preset range, so that the technology rate (such as etching rate or deposition rate) of the to-be-processed workpiece can be maintained in the preset range.

A practice golf ball has a core made of a rubber composition which includes a base rubber, a co-crosslinking agent, a crosslinking initiator and a metal oxide, and has a cover which encases the core and is made of a resin material. The co-crosslinking agent is methacrylic acid. The resin material has a breaking strength of 20 to 80 MPa and an elongation of 150 to 600%. The ball is endowed with the properties required of practice balls intended for long-term use, including better durability to cracking and durability of appearance than ordinary game balls, and also better durability to ball surface loss than the one-piece golf balls which are commonly used as practice balls.

The invention relates to an ultra-low wall loss submicron terminal virtual impactor. The impactor comprises an inflow inlet, positioning double-screw bolts, a lateral flow cavity, an accelerating nozzle, a small-particle-size particle collecting cavity and a large-particle-size particle collecting cavity; the inner flow inlet is fixedly connected with the top wall of the lateral flow cavity through the positioning double-screw bolts; the bottom wall of the lateral flow cavity is fixedly connected with the acceleration nozzle; the upper end of the acceleration nozzle is located inside the lateral flow cavity; the lower end of the acceleration nozzle is fixedly connected with the upper end of the small-particle-size particle collecting cavity; the lower end of the small-particle-size particle collecting cavity is fixedly connected with the large-particle-size particle collecting cavity; and the upper part of the large-particle-size particle collecting cavity is located in the small-particle-size particle collecting cavity. The ultra-low wall loss submicron terminal virtual impactor of the invention can be adopted as a terminal device so as to be directly exposed to a sample environment, and can separate aerosol particles at the beginning of collection; a transverse-ring-shaped sample collection inlet design for submicron particles is realized, so that the pre-separation of the particles is realized, and separation precision can be improved; and pure gas flow is added, so that direct contact of the aerosol particles with an inner wall surface can be avoided, so that the wall surface loss of the particles is extremely low.

A semiconductor device forming method comprises steps: a substrate is provided, and a gate dielectric layer and a pseudo gate; an interlayer dielectric layer flush with the pseudo gate is formed on the substrate; ion doping is carried out on the surface of the interlayer dielectric layer so as to form a doping layer on the surface of the interlayer dielectric layer; the gate dielectric layer and the pseudo gate are removed; and a gate electrode structure is formed at the pseudo gate position. The invention also provides a semiconductor device, which comprises the substrate, the gate electrode, the interlayer dielectric layer and an isolation layer arranged on the surface of the interlayer dielectric layer. The semiconductor device and the forming method thereof have the beneficial effects that through carrying out ion doping on the surface of the interlayer dielectric layer and the surface of the exposed pseudo gate and forming the doping layers on the surface of the interlayer dielectric layer and the surface of the pseudo gate, the doping layers can well block influences on the interlayer dielectric layer by the subsequent pseudo gate removal step, surface losses of the interlayer dielectric layer are further reduced, and the height of the gate electrode formed subsequently can be ensured.

The invention discloses an alkali deweighting finishing process of a moisture-absorption and quick-drying fabric based on regenerated polyester fibers. The alkali deweighting finishing process comprises the following steps: firstly, adopting a blended fabric prepared from the following raw materials in percentage by weight: 85% of the regenerated polyester fibers and 15% of natural silk; preparing a NaOH solution with the concentration of 15g/L and adding 0.4g/L-0.6g/L dodecyl dimethyl benzyl ammonium chloride cationic surfactant into the NaOH solution; then adopting an electro-thermal constant-temperature water bath kettle and setting the temprature of the water bath kettle to 100 DEG C; then adding the container with the prepared NaOH solution into the water bath kettle; and putting the blended fabric prepared from the raw materials in percentage by weight into the container and carrying out alkali deweighting treatment for 30min. The fabric treated by the alkali deweighting finishing process has minimum strength loss; the surface loss of the fibers in the fabric is less and the strength drop of the fabric is less; and the technical index requirements on moisture-absorption and quick-drying products meeting Chinese standard requirements can be met.

The invention discloses a detecting device for fiber line losses and fiber end surface losses. The detecting device comprises a light splitter, a stable light source, an optical power meter, an adapter, a standard connector, a fiber connector, a calibration connector. The light splitter is connected with the stable light source through a first female port of the light splitter, is connected with the optical power meter through a second female port of the light splitter, and is connected with the standard connector through a first branch port of the light splitter. The optical power meter is respectively connected with a lateral detector and a forward detector; the lateral detector is installed in the adapter to detect the fiber end surface losses; the forward detector is connected to a second female port of the light splitter to detect the fiber line losses. The construction worker is able to test the fiber line losses and the connection quality of the field formed fiber connector respectively by carrying one device; the engineering construction and monitoring are carried out conveniently; and the construction field device investment cost is lowered. The detecting device having a small size and high reliability is suitable for large-area popularization.

The invention relates to a cavity surface film coating method for improving the temperature stability of a semiconductor laser, which comprises the following steps: step 1, taking a semiconductor laser chip after cleavage; step 2, by alternately depositing high low refractivity material of which the optical thickness is lambda/4 on the back end face of the semiconductor laser chip, obtaining a film system increased along with the wavelength red shift reflectivity on a wavelength-reflectivity curve, wherein lambda is the center wavelength of the film system; and step 3, adjusting the center wavelength of the cavity surface reflecting film system of the semiconductor laser and the maser wavelength of the semiconductor laser, so that the maser wavelength in the working temperature range falls in the rising bandwidth of the reflectivity-wavelength curve; and because the maser wavelength of the semiconductor laser generates red shift along with temperature rise, the reflectivity of the semiconductor laser is increased along with the temperature rise, and the cavity surface loss is reduced along with the temperature rise, thereby improving the temperature property of the semiconductor laser.

The invention discloses a pre-buried paddy field water and fertilizer monitoring system which comprises a pre-buried box, a cover plate arranged on the pre-buried box, a water level monitoring system,a layered water pipe system, a conductivity sensor system and a manual water taking system, wherein the pre-buried box comprises a field reduction box and a component placement box, and the field reduction box and the bottom of the component placement box are integrated, and a partition plate is arranged at the joint of the field reduction box and the component placement box. According to the method, the mode of the device to a paddy field overcome the difficulty of field sampling, and water can be simply and conveniently taken from the paddy field in a layered mode. Meanwhile, the vertical migration loss and the field surface loss of the paddy field fertilizer with water can be automatically monitored in real time, and the underground water level of a paddy field can be monitored in realtime. The paddy field water and fertilizer data can be automatically sent to a mobile phone or a computer terminal through solar power supply. The system has the advantages of being energy-saving, environment-friendly, high in automation degree, and capable of being used for test research and scale planting. The accuracy can be calibrated.

The invention discloses a magnetic pole surface loss measuring device of a variable-speed power generation motor, belongs to the field of motors, and aims to solve the problem in measuring the magnetic pole surface loss of a rotor of the variable-speed power generation motor. The device comprises m temperature sensing elements, n ultrasonic temperature sensors, a magnetic pole surface loss collector and an upper computer, wherein the m temperature sensing elements are uniformly embedded among different strands of rotor windings, and are used for detecting the temperatures of the windings; them temperature sensing elements send detected temperature signals to the magnetic pole surface loss collector in a wired mode; the n ultrasonic temperature sensors are uniformly attached to the outer surfaces of magnetic poles of the rotor, and are used for detecting the temperatures of the surfaces of the magnetic poles of the rotor; the n ultrasonic temperature sensors send detected temperature signals to the magnetic pole surface loss collector in a wireless mode; the magnetic pole surface loss collector collects two kinds of the temperature signals according to instructions issued by the upper computer; and the magnetic pole surface loss collector acquires magnetic pole surface loss data according to two kinds of temperature data and uploads the magnetic pole surface loss data to the upper computer.

A high-voltage motor that is convenient for adjusting the magnetic circuit characteristics of the motor, including a stator and a stator slot, and a coil is embedded in the stator slot, and is characterized in that it also includes a slot wedge arranged at the opening of the stator slot, and the slot wedge is "T" It is composed of a protruding tenon end and slot cover ends located on both sides of the tenon end and extending in opposite directions; the center line of the tenon end and the connection line between the two slot cover ends are basically in an orthogonal relationship; adjacent on the stator There is a tenon groove between the stator slots, and the tenon end is matched and embedded in the tenon groove on the stator. The slot cover ends of adjacent slot wedges jointly complete the coil fixing in the stator slot. The slot cover ends of two adjacent slot wedges There is a magnetic circuit gap between them; the first backing plate, the coil, the second backing plate and the thermal expansion glass felt are arranged in sequence in the stator slot. The invention reduces the surface loss and pulse vibration loss of the motor, improves the efficiency of the motor, the end of the slot wedge and the stator are tightly fitted, is not easy to loose, has high limit reliability and long service life, and is beneficial to reduce the vibration and noise of the motor operation .

The invention discloses a nanometer net aldehyde OSB ecological board. The layer is a cuboid structure, the cut surface is a rectangle, the length is 5-6cm, and the thickness is 1cm. A nano-clean aldehyde OSB ecological board of the present invention is equipped with a waterproof device. First, the equipment is supported by the panel and the support plate so that the vent has a space Spread, keep the smell of the device normal, and finally the plastic waterproof layer is on the outside to prevent water molecules from entering and causing the leather surface of the device to wear, thereby improving the waterproof performance of the device and solving the problem of insufficient waterproof performance of the device.