2832 results about "Electric properties" patented technology

The apparatus and method are designed to compute the optimal spatial and temporal characteristics for combating tumor growth within a body on the basis of cytological (as provided by biopsies, etc.) and anatomical data (as provided by CT, MRI, PET, etc.), as well as the electric properties of the different elements. On the basis of this computation, the apparatus applies the fields that have maximal effect on the tumor and minimal effect on all other tissues by adjusting both the field generator output characteristics and by optimal positioning of the insulated electrodes or isolects on the patient's body.

Disclosed are a method and apparatus for forming an insulating film on the surface of a semiconductor substrate capable of improving the quality and electrical properties of the insulating film with no employment of high-temperature heating and with good controllability. After the surface of a silicon substrate is cleaned, a silicon dioxide film having a thickness of 1-20 nm is formed on the substrate surface. The silicon substrate is exposed to plasma generated by electron impact, while the silicon substrate is maintained at a temperature of 0° C. to 700° C. Thus, nitrogen atoms are incorporated into the silicon dioxide film, obtaining a modified insulating film having good electrical properties.

The invention discloses a porous graphene/polymer composite structure, and a preparation method and application thereof. The composite structure mainly comprises a compound formed by porous graphene and more than one polymer and/or polymer monomer. The preparation method comprises the following steps of: compounding polymers and/or polymer monomers with porous graphene to form a target product, wherein the compounding manner comprises single-screw/double-screw fusing processing, injection molding, blow molding, melt spinning, solution spinning, electrostatic spinning, electrostatic spraying, powder metallurgy, liquid mixing or high speed mechanical stirring dispersion. The invention is simple in process, wide in source of raw materials, easy to implement in large scale, low in cost, safe, environment-friendly and free from toxic and harmful wastes, and the product obtained is excellent in thermal and electric properties, and has wide application prospect in the fields of heat conduction, radiation, electric conduction, anti-static electricity, electromagnetic shielding and the like.

In a semiconductor device in which a semiconductor chip is stacked on a substrate, an interposer chip having wirings is provided under the semiconductor chip. A bonding pad of the semiconductor chip is electrically connected to a bonding terminal provided on the substrate via the interposer chip by wire bonding. The interposer chip prevents a semiconductor element formed in the semiconductor chip from deteriorating in terms of an electric property and from being physically damaged. Further, the wire bonding strength does not drop. Moreover, it is possible to form a fine wiring pitch for relaying a wire-bonding wire.

A phenylcarbazole-based compound is represented by Formula 1, and has superior electric properties and charge transport abilities, and thus is useful as a hole injection material, a hole transport material, and/or an emitting material which is suitable for fluorescent and phosphorescent devices of all colors, including red, green, blue, and white colors. The phenylcarbazole-based compound is synthesized by reacting carbazole with diamine. The organic electroluminescent device manufactured using the phenylcarbazole-based compound has high efficiency, low voltage, high luminance, and a long lifespan.

An electric current detector is provided wherein loose arrangement of conductor 6 in opening 5 provides an air gap between the conductor 6 and plastic package 4 in opening 5 to prevent close contact of conductor 6 to plastic package 4. When heat and heat stress are produced in conductor 6 by a large electric current flowing through conductor 6 during measurement, air gap surely prevents heat and heat stress from traveling to Hall effect sensor 2 and plastic package 4 while a part of heat in conductor 6 is radiated into air in opening 5. Thus, the loose arrangement of conductor 6 can restrict or reduce deterioration of electric property in Hall sensor 2 and degradation of mechanical property in plastic package 4 by heat and heat stress in conductor 6. Also, the loose arrangement ensures and facilitates attachment of the detector 1 in position on a surface of a substrate, and enables to maintain conductor 6 at the same level as lead terminals 3 of the detector.

A photoconductor is disclosed that exhibits superior wear resistance, excellent flaw resistance, and appropriate electric properties owing to a photosensitive layer having a crosslinked layer with superior smoothness and higher crosslink density, wherein the photoconductor comprises a support, and a photosensitive layer disposed on the support, the photosensitive layer comprises a crosslinked layer, the crosslinked layer comprises a radical polymerizable monomer having three or more functionalities and no charge transport structure and a radical polymerizable compound having one functionality and a charge transport structure, and the crosslinked layer is cured by way of photopolymerization and thermal polymerization.

Disclosed is a power transmission tower, which includes a tower body; first through sixth main insulation arms connected by one end thereof to the tower body with an angle with the tower body, respectively, and arranged radially and symmetrically about the tower body in a longitudinal direction; and first through eighth auxiliary insulation arms for selectively connecting the other end of the first through sixth main insulation arms and the tower body so that each of the auxiliary insulation arms constitutes each side of an octagon.

Since the insulation arms are octagonally arranged, it is possible to reinforce a mechanical strength and enhance electric properties of the tower.

A preparation method of a grapheme and ferriferrous oxide composite nanometer material belongs to the technical field of functional materials. The preparation method comprises the following steps: at first, oxidized grapheme is prepared by an improved chemical method; and then oxidized grapheme and ferric ions are adopted as raw materials, and are compounded through adopting a solvothermal technology to carry out one-step in-situ reduction to obtain the grapheme and ferriferrous oxide composite nanometer material. The preparation method solves the problems in the prior art that the interface binding force of grapheme and a magnetic material is insufficient, the appearances, the sizes and the magnetism of magnetic material particles are uncontrollable, and the magnetic material particles cannot be dispersed in water; the prepared composite nanometer material shows a microspheric appearance, has a loose surface and is high in specific surface area; through the change of the ratio of grapheme to the ferric ions, final magnetic property and electrical property of the composite material can be adjusted; and the controllable growth of the grapheme and ferriferrous oxide composite material is realized. The prepared grapheme and ferriferrous oxide nanometer microsheric material with magnetic and electric properties can be used in fields such as biological medicine, energy, invisibility and electronic materials.

The invention relates to high-voltage DC cable insulating material and a preparation method thereof in the technical field of the insulating material. The preparation method is that: 100 weight portions of low-density polyethylene, 0.1-1 weight portion of anti-oxidizer, 0.5-5 weight portions of nano inorganic powder and 0.2-5 weight portions of maleic anhydride are placed into and mixed and compounded in a banbury mixer; the temperature of mixing and compounding is 373K to 378K and the mixing and compounding time is 10 to 15 minutes; 0.1-5 weight portions of cross-linking agent is added into the mixture and is mixed and compounded under the temperature of 373K to 378K for 10 to 15 minutes; then, the high-voltage DC cable insulating material is obtained; wherein, the density of the low-density polyethylene is less than 0.9g/cm<3>. The insulating material of the preparation method can effectively improve the mechanical and electric properties of the high-voltage DC cable, thus avoiding the disadvantage that the environment is polluted and damaged by an oilpaper insulating cable due to the leakage of the insulating oil.

Method for predicting physical properties of a source rock formation wherein an inclusion-based (103) mathematical rock physics model (101) is constructed that treats organic matter as solid inclusions, solid background, or both, and relates anisotropic elastic and electric properties of source rock to in-situ rock and fluid properties (102). The model is calibrated with well log data and may be used to forward model calculate effective anisotropic elastic (104.1) and electrical (104.2) properties of the source rock formation, or by inversion (441-442) of sonic and resistivity log data to calculate total organic carbon (423) in terms of a difference (421) between elastic and electrical properties of the source rock.

The invention discloses a foam graphene skeleton reinforced aluminum-base composite material and a preparation method thereof. The composite material consists of a foam substrate, a graphene reinforcing layer and a base material or is added with reinforcing particles, wherein the foam substrate is foam metal, foam ceramic or foam carbon; the base material comprises aluminum and an aluminum base alloy; and the reinforcing particles are at least one of high-thermal conductivity diamond powder, graphene and carbon nanotubes or a combination of more or high-thermal conductivity low-expansion ceramic particles for improving the mechanical strength of the composite material and reducing the coefficient of thermal expansion. In the composite material disclosed by the invention, since graphene and aluminum are continuously distributed in a three-dimensional space to form a network interpenetrating structure, remarkable influence on the thermal and electric properties of the material caused by the compound interface is weakened, the reinforcing phase can form a whole without reducing the good plasticity and toughness of the metal base in the composite material, and the heat conduction efficiency and electric conduction efficiency of the reinforcing body are maximized, so that the thermal conductivity, electric conductivity and mechanical strength of the composite material are remarkably improved over traditional composite materials; and therefore, the foam graphene skeleton reinforced aluminum-base composite material is a novel multifunctional composite material with great potential.

The invention discloses a porcelainized polyolefin composite material, comprising the following raw materials in parts by weight: 50-100 parts of polyolefin resin, 10-200 parts of porcelainized powder, 0.1-50 parts of an accelerant, 0-100 parts of a fire retardant, 0.3-15 parts of a compatilizer, 0.2-10 parts of a coupling agent, 0.1-5 parts of a lubricant and 0.1-8 parts of an antioxidant. The porcelainized polyolefin composite material disclosed by the invention is simple in technological process, easy to operate, free of three wastes, and excellent in mechanical property and electric property, and can be sintered into ceramic at a temperature over 600 DEG C or in a flame within 5-10 minutes; and the formed shell is good in integrity, free of cracking or drippage, has excellent fireproof performance and heat-insulating property, and has high application value in the fields of fire-resistant wires and cables and indoor fire-resistant decoration.

The invention provides silver coated copper conductor slurry for a front electrode of a solar battery and a preparation method of the silver coated copper conductor slurry for the front electrode of the solar battery. The silver coated copper conductor slurry for the front electrode of the solar battery comprises a conductive phase, glass powder and an organic carrier, wherein the conductive phase is silver coated copper powder and silver powder which account for 68-85% of the total weight of the slurry, the glass powder is Bi-B-Zn-Si-Ti-Ba-Al-O glass powder which accounts for 5-10% of the total weight of the slurry, and the organic carrier accounts for 10-22% of the total weight of the slurry. The preparation method comprises the steps: mixing the silver coated copper powder, the silver powder and the glass powder; weighing the organic carrier to agitate adequately; then mixing the silver coated copper powder, the silver powder and the glass powder with the organic carrier; and then rolling the mixture to obtain the silver coated copper conductor slurry for the front electrode of the solar battery. According to the silver coated copper conductor slurry for the front electrode of the solar battery, the electric properties of the electrode greatly is improved, and the photoelectric conversion rate of the battery is enhanced. The maximum fineness of the silver coated copper conductor slurry for the front electrode of the solar battery is 15 microns, the average fineness of the silver coated copper conductor slurry is less than 7 microns, the solid content is 80-87%, and the viscosity is 200-100keps. The solar battery printed and sintered by the silver coated copper slurry has higher photoelectric conversion rate and low cost.

The invention relates to a high-power radio frequency connector provided with a fast locking and separation mechanism, which comprises a plug and a socket. The plug comprises an elastic claw, an unlocking sleeve, a plug external conductor, an elastic gasket, a positioning nut, a dielectric body and an auxiliary nut. The locking face of the elastic claw, after being arranged in the unlocking sleeve, extends out of the unlocking sleeve a certain distance through a corresponding positioning groove and is axially positioned on the plug external conductor together with the elastic gasket through the positioning nut. The front end of the unlocking face of the elastic claw is positioned below the unlocking sleeve and locks the locking face in the locking groove. The socket comprises a socket external conductor, a waterproof O-shaped ring and a dielectric body, and a locking groove is arranged on the socket external conductor. The high-power radio frequency connector is ensured to meet the indexes of low reflection and low intermodulation and is convenient to use, high in reliability and excellent in mechanical and electric properties.

A multilayer insulated wire has two or more extrusion-coating insulating layers provided on a conductor directly or via some other layer, or provided on the outside of a multicore wire composed of conductor cores or insulated cores that are collected together, wherein at least one of the insulating layers is made of a mixture prepared by mixing 100 parts by weight of a polyethersulfone resin and 10 to 100 parts by weight of an inorganic filler. A transformer utilizes the multilayer insulated wire. The multilayer insulated wire can realize such high heat resistance as heat resistance F class (155° C.), which satisfies IEC 950 standards, or higher heat resistance, in transformers; and can exhibit excellent electrical properties even at high frequencies. Further, when the transformer is used at high frequencies, the electric properties are not lowered, and influence by the generation of heat can be prevented.

A method for forming a Ta2O5 dielectric layer using plasma enhanced atomic layer deposition, which can improve the quality of a layer and its electric property by forming a Ta2O5 dielectric layer using a plasma enhanced atomic layer deposition. The method for forming a Ta2O5 dielectric layer using plasma enhanced atomic layer deposition, comprising the steps of: a) flowing Ta(OC2H5)5 source gas in a chamber and generating plasma; b) depositing a Ta2O5 layer by using the plasma; c) purging the chamber; d) repeatedly performing the steps a) to c) in order to form a Ta2O5 dielectric layer; e) thermally treating the surface of the Ta2O5 dielectric layer in an oxygen atmosphere; and f) crystallizing the Ta2O5 dielectric layer.

There is disclosed a multilayer insulated wire which comprises a conductor and solderable extrusion-insulating layers made up of two or more layers for covering the conductor, wherein at least one insulating layer is formed by a mixture comprising 100 parts by weight of a resin (A), of at least one selected from the group consisting of polyetherimide resins and polyethersulfone resins, 10 parts by weight or more of a resin (B), of at least one selected from the group consisting of polycarbonate resins, polyarylate resins, polyester resins, and polyamide resin, and 15 to 200 parts by weight of an inorganic filler (C). There is also disclosed a transformer which utilizes the multilayer insulted wire. The multilayer insulated wire is excellent in heat resistance, solderability, high-frequency characteristic, and coilability, and it is favorably suitable for industrial production. Further, the transformer utilizing the multilayer insulated wire is excellent in electrical properties and high in reliability, since when used at high frequencies, electric properties are not lowered and influence by the generation of heat can be prevented.

The invention discloses a radio frequency connector. The radio frequency connector comprises a socket with an inner conductor and an outer conductor. The radio frequency connector is characterized in that the inside of the socket is provided with a commutator; the commutator is a casing of which two ends have raised cushion packaging structures; an elastic sleeve is arranged outside the casing, an elastic twist pin is clamped at an insulating seat in the elastic sleeve; the raised cushion packaging structures are in the elastic interference fit with an outer conductor; and the elastic twist pin is inserted in the inner conductor, thus realizing the coaxial floating connection of the radio frequency connector and the mounting panel. Compared with the prior art, the invention has the advantages of simple structure and low production cost; the radio frequency coaxial connector can float axially and radially, the effective contact of the panel and the radio frequency connector can be ensured; and the radio frequency connector is especially suitable for the use condition that a plurality of products are arranged on one panel, and the consistency of the electric property can be ensured.