394results about How to "Control thickness" patented technology

A method for forming a dielectric film in a trench on a substrate by plasma-enhanced atomic layer deposition (PEALD) performs one or more process cycles, each process cycle including: (i) feeding a silicon-containing precursor in a pulse; (ii) supplying a hydrogen-containing reactant gas at a flow rate of more than about 30 sccm but less than about 800 sccm in the absence of nitrogen-containing gas; (iii) supplying a noble gas to the reaction space; and (iv) applying RF power in the presence of the reactant gas and the noble gas and in the absence of any precursor in the reaction space, to form a monolayer constituting a dielectric film on a substrate at a growth rate of less than one atomic layer thickness per cycle.

A fully depleted semiconductor-on-insulator (FDSOI) transistor structure includes a back gate electrode having a limited thickness and aligned to a front gate electrode. The back gate electrode is formed in a first substrate by ion implantation of dopants through a first oxide cap layer. Global alignment markers are formed in the first substrate to enable alignment of the front gate electrode to the back gate electrode. The global alignment markers enable preparation of a virtually flat substrate on the first substrate so that the first substrate can be bonded to a second substrate in a reliable manner.

A computer disk drive (22) having a write head (52) which includes a coil (38), a photoresist insulation layer (66) formed on the coil (38), and an insulation shell layer (102) which is formed on the photoresist insulation layer (66). In the first preferred embodiment (100), the top pole (42) of the write head (52) is formed on the insulation shell layer (102).

In the second preferred embodiment (200), the disk drive write gap (76) is formed on the insulation shell layer (102) and the top pole (42) of the write head (52) is formed on the write gap (76).

The insulation shell layers (102) in both embodiments are preferably made of dielectric materials (103).

Methods of fabrication for these embodiments are also disclosed.

An application tip (100) for a viscous or pasty composition comprises a body (101) including a proximal end (102) that can be fastened onto a device for dispensing said composition and a distal end (103) that is provided with an outlet orifice (104), an internal duct (110) extending between the proximal and distal ends of said body. The internal duct (110) comprises at least one portion (112) of flat shape opening out at the outlet orifice (104) and including adjacent grooves (113) in at least one of its sides.

A coupling system for photonic integrated circuits and integrated optical waveguides is provided. A recess is formed in a substrate on which one or more integrated optical waveguides are disposed, the recess being located at the desired mounting location of the photonic integrated circuit. At least one end wall of the recess is inclined with respect to a normal to the substrate surface. At least one end face of a photonic integrated circuit is inclined to match the inclined end wall of the recess. The length, width, and depth of the recess are controlled so that inserting the photonic integrated circuit into the recess passively provides both lateral and vertical alignment of the photonic integrated circuit with the integrated optical waveguide(s).

The present invention relates to a retardation film having a homeotropic alignment liquid crystal film, a polarizing film, an IPS (In-Plane Switching) mode liquid crystal display and a method for preparing the same. More particularly, the present invention relates to a homeotropic alignment liquid crystal film prepared from a liquid crystal mixed solution containing a polymerizable reactive liquid crystal monomer so as to improve a viewing angle characteristic of an ISP mode liquid crystal display and reduce a color shift; a retardation film prepared by integrating an oriented retardation film and a method for preparing the same; a polarizing film having the retardation film located between a polarizing element or plate and a liquid crystal cell and a method for preparing the same; and an IPS mode liquid crystal display having the polarizing film. There is an advantage in that since a homeotropic alignment liquid crystal film with a retardation of a thickness direction is prepared using a liquid crystal mixed solution containing a reactive liquid crystal monomer, a retardation film according to the present invention is not required for high-temperature heat treatment and cooling processes so that it can be applied to a high-speed continuous process. Further, there is an advantage in that a retardation film having an oriented retardation film integrated with the homeotropic alignment liquid crystal film is arranged between a polarizing element or polarizing plate of an IPS mod liquid crystal display and a liquid crystal cell so that a contrast ratio can be increased up to about 1520%, and a color shift characteristic can be also improved.

The invention relates to a preparation method of an electrostatic spinning hydrophobic nanofiber porous membrane for membrane distillation. The method comprises the following steps of: dissolving a hydrophobic functional polymer material in the solvent to get a 1-35wt% polymer spinning solution, performing electrostatic spinning to get a hydrophobic nanofiber porous membrane, and further performing thermal treatment, thereby obtaining the electrostatic spinning hydrophobic nanofiber porous membrane for membrane distillation. The preparation method provided by the invention is simple and practicable, and can be used for conveniently and accurately controlling the thickness and uniformity of the nanofiber membrane and realizing operations of mass production more easily; the high-hydrophobicity nanofiber porous membrane prepared by the preparation method can be used for signally improving the defects of the conventional membrane for membrane distillation that the water flux is low and the membrane pores get wet easily, so that the membrane distillation technology can compete with a reverse osmosis technology in the seawater desalination field.

The invention discloses a method for preparing a metal chalcogenide film. The method is used for growing the metal chalcogenide film on a substrate with the vapor deposition process by using a chalcogen source and a metal element source and comprises the following steps of: providing three temperature zones, wherein the temperature of the three temperature zones can be controlled independently, and the chalcogen source, the metal element source and the substrate are put in the three temperature zones respectively; controlling the three temperature zones, evaporating the chalcogen source to generate the chalcogen source steam, evaporating the metal element source to generate the metal element source steam, and heating the substrate to the predetermined deposition temperature; providing a carrier gas, and enabling the carrier gas to flow through the three temperature zones in sequence to deliver the metal element source steam to the substrate to deposit and grow so as to form the metal chalcogenide film. The method disclosed by the invention is simple, dispenses with the original complex step of introducing a nucleation site and effectively ensures the purity and the surface cleanness of a sample. The metal chalcogenide film prepared by adopting the method has high quality.

The invention discloses a method for preparing a continuous fiber multiaxial fabric reinforced thermoplastic composite material. The prepared continuous fiber multiaxial reinforced thermoplastic preconsolidating material is taken as a base material of the composite board, and combined with other functional materials for forming a novel material system which can be used for producing multiaxial fabric reinforced thermoplastic composite materials for different industries and solving the technical bottleneck that different materials have different composite bonding difficulties. According to the invention, the prepared composite material is constructed by continuous fiber multiaxial direaction; materials have the characteristics of resilience and uniform stressing on different directions. In addition, light sandwich panel formed by a honeycomb core material provides higher impact strength of materials, which is suitable for preparing structural parts and interior decorative parts in the field of railway car containers of navigation and aviation. The product of light-weight flame retardant can be recovered and used, and is more suitable for industrialization scale production of the warp knitting industry organization.

This invention relates to an ultra sparse water conductive fiber. The superficial gable is the fiber of electric conduction polymer which is composed by 20-1000 nanometers thick, diameter of 400-900 nanometer electric conduction high polymer. This fiber is for using electric conduction polymer chemical oxidation position polymerization method in fiber surface gable electric conduction polymer level. This invention also relates to a ultra sparse water electric conduction fabric, it for in the superficial gable a fabris composed of 20-1000 nanometers thick, by the diameter was the electric conduction polymer level fabric which 400-900 nanometer electric conduction high polymer particle. This fabric for use electric conduction polymer chemical oxidation home position polymerization method in fabric surface gable electric conduction polymer level. This invention's fiber or the fabric surface resistance for 200 omega /cm2-300M omega /cm2, the angel contact with water is bigger than 160degree, the roll position is smaller than 14degree. It displays highly clean ability, has the electromagnetic screen, the anti-static electricity, the stealth, the waterproofing, the dustproof function, specially for war industry, astronautics aviation, factory and mining enterprise, health and so on.

Provided are a process for economically preparing a graphene shell having a desired configuration which is applicable in various fields wherein in the process the thickness of the graphene shell can be controlled, and a graphene shell prepared by the process.

The invention discloses a C/C composite material superhigh temperature ceramic coating, and a preparation method thereof. The C/C composite material superhigh temperature ceramic coating is composed of an anti-oxidation SiC transition internal layer and a superhigh temperature ablation-resistant ceramic external layer; the superhigh temperature ablation-resistant ceramic external layer is composedof more than one ingredients selected from SiC, ZrC, HfC, TaC, TiC, ZrB2, HfB2, TaB2, and TiB2. The preparation method is suitable for industrialized production, is simple in equipment, is convenientin operation, is capable of controlling coating thickness, satisfying preparation requirements of large size C/C composite material superhigh temperature ceramic coating with complex shapes, and is asuperhigh temperature ceramic coating preparation method with excellent development potential.

The invention provides a method for measuring the thickness, or non-uniformity of thickness, of one or more layers of a film or article such as a preform. At least one layer contains a known concentration and a substantially uniform distribution of fluorophores. The fluorophores are added to the one or more layers in sufficient quantity to impart fluorescence capable of detection by a detector when exposed to electromagnetic radiation at absorbing wavelengths. The layers of the invention may be made from polymeric material, non-polymeric material, or combinations thereof.

A process for coating the slurry on the surface of cellular ceramic carrier inclues such steps as arranging the cellular ceramic carrier to a particular working position by automatic fixture, sealing it, delivering the slurry via tube, negative-pressure coating, and positive-pressure scavenge to remove excessive slurry.

The invention relates to a high molecule and inorganic nano-particle hybrid film and a preparation method thereof, and particularly relates to a high molecule and inorganic nano-particle hybrid film for doping inorganic particles into a high molecule material by using a sol-gel method and a preparation method thereof. In the high molecule and inorganic nano-particle hybrid film, inorganic nano-particles are uniformly dispersed in the high molecular polymer film and account for 30-50 percent by weight of the total weight of the polymer film. The method comprises the following steps of: (1) preparing an inorganic oxide particular solution; (2) preparing a polymer solution; (3) preparing a high molecule-inorganic nano-particle mixed solution by using a low-temperature sol-gel method; and (4) injecting and drying the mixed solution to form a film. Compared with the prior art, the preparation method provided by the invention is easy and practical, can be used for conveniently and accurately controlling the thickness and the uniformity of the high molecular film, and is easy for production in scale. The inorganic nano-particle doped high molecular film can be widely applied to automobiles, construction and building materials and other fields.

The invention discloses a method for mining sylvite in underground carnallite ore, which comprises the following steps of: (1) building wells, namely, taking three-pipe structures as well bodies, wherein the three pipes include a technical sleeve pipe, a production sleeve pipe and a central pipe; (2) building a groove on a single well, namely, filling normal-temperature water in annular space of the central pipe and the production sleeve pipe, and discharging dissolved brine from the central pipe; (3) mining by non selective dissolution at normal temperature; (4) selectively mining by hot melting at high temperature, namely, communicating two wells or well groups, pulling out the central pipe, filling a sodium chloride and magnesium chloride containing filler of 75 to 90 degrees centigrade into a well, and discharging the brine for processing from the other well in the well group; and (5) refilling a mother solution into the wells. The method for mining the sylvite in the underground carnallite ore provided by the invention realizes selective mining of potassium chloride; and, the method saves energy resources and reduces production cost; moreover, the refilling process of the mother solution realizes zero discharge of the mother solution and facilitates environment protection.

The invention discloses an ultrathin soaking plate and a manufacturing method thereof. The ultrathin soaking plate comprises a cover plate and a bottom plate, wherein the peripheral edge of the cover plate and the peripheral edge of the bottom plate are in sealed connection. A groove is formed in the inner surface of the cover plate so that a cavity in a vacuum state can be formed between the cover plate and the bottom plate. A plurality of protrusions arranged in an array manner are distributed in the cavity and located on the bottom face of the groove. The protrusions are hollow pillars formed in a pressing manner. The protrusions are connected with the cover plate and the bottom plate so that the protrusions can be supported between the cover plate and the bottom plate and used for heat transmission between the cover plate and the bottom plate. The outer walls of the protrusions serve as a medium for working fluid to flow towards the bottom plate from the cover plate when the working fluid is evaporated and condensed when encountering cold. The protrusions on the cover plate are in contact with the bottom plate and can support the cavity formed by the cover plate and the bottom plate and be used for heat transmission between the bottom plate and the cover plate; and the outer walls of the protrusions serve as the medium for the working fluid to flow towards the bottom plate from the cover plate when the working fluid is evaporated and condensed when encountering cold. By means of the ultrathin soaking plate and the manufacturing method of the ultrathin soaking plate, the thickness of the soaking plate can be reduced, the protrusions are formed in the pressing manner through a simple stamping technology, the manufacturing technology is simplified, the cost is low, and the ultrathin soaking plate is suitable for large-scale production.

The invention provides corrosion-resistant multi-coating neodymium iron boron and a preparation process. The corrosion-resistant multi-coating neodymium iron boron is composed of a neodymium iron boron permanent magnet and multiple coatings arranged on the outer surface of the neodymium iron boron permanent magnet, the multiple coatings sequentially include a nickel-plated layer, a dysprosium-plated aluminum alloy thin film layer and a nickel-chromium composite coating, thickness of the nickel-plated layer is 10-15um, thickness of the dysprosium-plated aluminum alloy thin film layer is 10-20um, and thickness of the nickel-chromium composite coating is 6-10um; modification of the multiple coatings can be realized on the surface of the permanent magnet, binding strength between the coatings and a permanent magnet base is guaranteed, the defect that the coatings are thin and poor in corrosion resistance and wear resistance caused by single process is overcome, and the corrosion-resistant multi-coating neodymium iron boron prepared by the process has high corrosion resistance and wear resistance.

A method for depositing a layer of phosphor-containing material on a plurality of LED dies includes disposing a template with a plurality of openings on an adhesive tape and disposing each of a plurality of LED dies in one of the plurality of openings of the template. The method also includes forming a patterned dry film photoresist layer over the template and the plurality of LED dies. The photoresist layer has a plurality of openings configured to expose a top surface of each of the LED dies. Next, a phosphor-containing material is disposed on the exposed top surface of each the LED dies. The method further includes removing the photoresist layer and the template.

The invention discloses a novel chondrocyte epimatrix membrane and a preparation method thereof. The membrane contains cell epimatrix ingredients which have bioactivity and cell activity, wherein the cell epimatrix comprises the following main ingredients in percentage by weight: 80 to 95 percent of bionic type II collagen in an acellular cartilage matrix and 10 to 20 percent of hyaluronic acid, 10 to 20 percent of aminopolysaccharide and the like which serve as a chondrocyte epimatrix; the chondrocyte epimatrix biological membrane prepared from the acellular cartilage matrix has the bionic chondrocyte epimatrix ingredients, is excellent in cell consistency, does not arouse immunological rejection of host cartilage tissue, can be used for repairing the damage of hyaline cartilage tissue of joints and reconstructing the hyaline cartilage tissue, and also can be used for a seed cell inoculating vector and a growth factor sustained-release vector; and the chondrocyte epimatrix contains blood vessel inhibiting factor ingredients, so the membrane also can be used for preventing the conglutination of tissue such as muscle tendons.

The invention discloses a coating method of light-emitting diode (LED) fluorescent powder. The method comprises the following steps: performing crystal- bonding and wire-bonding of a LED chip on a support, using a precision automatic adhesive-dispensing device with a robot arm to draw colloidal box dam around the chip; forming a colloidal box dam through hot curing or ultraviolet curing; dispensing a defined amount of fluorescent powder adhesive in the box dam; and curing again to obtain the LED, wherein fluorescent powder is coated on part of the chip. By using the method of the invention, the uniformity of light colour of the white LED can be increased; and the adhesive thickness round the chip can be accurately controlled by using the box dam, thus the effect of white light-mixing in all directions is controlled, and yellow ring, blue ring and other non-uniform phenomena can not appear.

The invention provides a liquid crystal coating device and a liquid crystal coating method. The liquid crystal coating device comprises a liquid crystal coating component, a real-time detector and a controller. The liquid crystal coating method comprises the following steps of: coating a liquid crystal onto a substrate by using the liquid crystal coating component; detecting the liquid crystal coated onto the substrate in real time by using the real-time detector, and outputting a detection signal; and controlling the liquid crystal coating component according to the detection signal by usingthe controller. By the liquid crystal coating device and the liquid crystal coating method, liquid crystal coating situations can be monitored in real time, and uniform liquid crystal films can be coated and formed.

The invention discloses a silicon electret condenser microphone and a method for making the same. The silicon electret condenser microphone comprises a shell, an acoustic transducer chip, an IC device, other passive components and a substrate, wherein the shell and the substrate are fixed together and form a cavity, and the shell and/or the substrate is provided with sound inlets; the acoustic transducer chip, the IC device and other passive components are positioned in the cavity and are respectively fixed and electrically connected with the substrate; the substrate is provided with an output end bond pad; an acoustic cavity is formed between the acoustic transducer chip and the substrate, and the substrate has a first mounting surface and a second mounting surface, with the acoustic transducer chip and the IC device fixed on the first mounting surface, and the other passive components fixed on the second mounting surface. The silicon electret condenser microphone in the technical proposal of the invention has two mounting surfaces for mounting elements, with the other passive components arranged on the second mounting surface and, the acoustic transducer chip and the IC device arranged on the first mounting surface, thereby realizing full page printing and improving the production efficiency.

The invention provides a novel method for preparing a chitosan nanofiber-base composite filter membrane. The method comprises the steps that a polymer material is dissolved in a solvent to be prepared into an electrostatic spinning solution; chitosan and spinning-assisting macromolecules are dissolved in the solvent according to the certain mass ratio, a certain number of monomers capable of achieving ultraviolet light crosslinking are added, and the mixture is stirred to be uniform to obtain an electrostatic spraying solution; the electrostatic spraying solution is subjected to electrostatic spinning to obtain a nanofiber non-woven fabric supporting layer; the electrostatic spraying solution is sprayed to the nanofiber non-woven fabric supporting layer through an electrostatic spraying method to form a function blocking layer, then hot-press incipient fusion treatment is carried out, ultraviolet light crosslinking and curing treatment is carried out, and therefore the chitosan nanofiber-base composite filter membrane is obtained. The chitosan nanofiber-base composite filter membrane is prepared by combining the hot-press incipient fusion method with ultraviolet light crosslinking aftertreatment, no traditional chemical crosslinking agent is adopted, light energy is sufficiently utilized, energy conservation and environment protection are achieved, and the prepared chitosan nanofiber-base composite filter membrane can efficiently treat acid dye wastewater for a long time.

The invention relates to a capsule type catalyst for preparing low-carbon olefin by catalyzing synthesis gas and a preparation method thereof. The catalyst is characterized in that the surfaces of spherules with the activity of preparing hydrocarbons through catalytic conversion of synthesis gas are coated with inert molecular sieve membranes with shape selectivity. The preparation method is characterized by coupling molecular sieve seed crystals on the active spherules and then further growing the molecular sieve membranes by a hydrothermal process. The thickness and morphology of the molecular sieve membranes can be controlled by regulating the ratios of H2O/SiO2 and H2O/template agent in molecular sieve precursor solution and the crystallization temperature and time, thereby affecting the desorption shape selectivity of the products and further improving the selectivity of the low carbon olefins.

A dielectric, structure and a method of forming a dielectric structure for a rear surface of a silicon solar cell are provided. The method comprises forming a first dielectric layer over the rear surface of the silicon solar cell, and then depositing a layer of metal such as aluminum over the first dielectric layer. The metal layer is then anodized to form a porous layer and a material layer is deposited over a surface of the porous layer such that the material deposits on the surface of the porous layer without contacting the silicon surface.

A method to prepare membrane electrode by remaking quantum exchange membrane of perfluorosulphonic acid includes the following steps: 1) to placing the substance of perfluorsulphonic acid into water containing organic polarity solvent with low boiling point and dissolving it by heating in a sealed reactor, 2) drying the solution of perfluorosulphonic acid by heating, 3) adding high-boiling point organic solvent for dissolving the dried substance of perfluorosulphonic acid and placing it in the dryer for 24 hour for obtaining the membrane making liquid, 4) pouring the membrane making liquid into a mould after the mould being warmed and producing the membrance by vacuum heat drying, 5) spraying the membrane making liquid on the catalytic layer surface of multihole gaseous diffusion electrode and drying it by heating after it being airdried.

The invention relates to a stirring head capable of enhancing a mechanical property of a stirring friction connecting area. The stirring head mainly comprises an integrated stirring needle (1), a detachable shaft shoulder (2) and a holding handle (3), and is characterized in that the integrated stirring needle (1) is formed by integrally connecting a column (1-4) to a conical head (1-5); a storage chamber (1-1) is arranged at the upper end of the column (1-4); a conveying hole (1-2) is formed at the center of the column (1-4); a radial spraying hole (1-3) which is communicated with the conveying hole (1-2) is formed on the conical head (1-5); the detachable shaft shoulder (2) is sleeved on the column (1-4); a lower end face of the detachable shaft shoulder (2) is resisted against an upperend face of the conical head (1-5); an upper end of the detachable shaft shoulder (2) is resisted against a lower end of the holding handle (3); a main body of an extruding piston (3-1) is inserted into the storage chamber (1-1); and the other end of the extruding piston (3-1) is connected to a force exerting device (3-2) in the form of extending out of the holding handle (3). The stirring head provided by invention can reduce the phenomena of substrate-thinning and flashing during a friction welding process and can obviously promote the mechanical property of a welded piece.

This invention belongs to a compound particle inorganic hollow micro particle process technique field. This invention uses the method of two iron salt liquid control hydrolyze to process the hole magnetic ferric oxide to cover on the organic ball of polystyrene to get the nucleus or shell structure magnetic ferric oxide compound ball. It uses slow heating method and non-oxygen conditions to sinter the compound particles and the organic material in the particles to get the whole hole magnetic ferric oxygen hollow micro ball particles.

Production equipment and a method of a self-adhesive layer band. A base material is treated by a base material unfolding machine, a head-tail-overlapping machine, a base material buffering adjusting bracket and a base material dryer successively, enters into a gluing pool for gluing, then enters a dryer for drying; the dried base material is rolled with an isolated film on a surface thereof by a mulch applicator, cooled by a self-adhesive layer buffering adjusting bracket and adjusted by an automatic error correcting controller; then the base material can be packaged by a product winder and finally cut into dimensions required by production specifications by a cutting machine. After gluing, the base material is dried and returns to the gluing pool for a second gluing; and base material enters into the dryer again for drying after the second gluing, so as to increase peeling intensity of a self-adhesive waterproof coiled material and bonding strength of the material with a base, accelerate drying speed and increase product quality. According to the invention, base material treatment, gluing, drying, coating, cooling, rolling and packaging can be finished in a line, so as to realizeflexible operation, high degree of automation and good product quality.