16 results about "Anisotropy" patented technology

An automotive lamp includes a semiconductor light emitting device used as a light source and bracket used as a support member supporting the semiconductor light emitting device. The bracket includes a first heat-transfer member having an isotropic thermal conductivity in at least part of region in contact with the semiconductor light emitting device, and a second heat-transfer member having an anisotropic thermal conductivity in a region in contact with the first heat-transfer member.

The present invention relates to an apparatus which allows producing elements with individually patterned anisotropic properties, where the pattern may vary from element to element. An apparatus according to the invention comprises a support for a substrate and an exposure unit for providing spatially modulated aligning light with a first polarization plane, wherein the exposure unit contains a light source, a spatial light modulator, which can be controlled electronically, for example by a computer, and a projection lens. The present invention furthermore relates to a method for fast production of elements with individually patterned anisotropic properties using such an apparatus.

In a liquid crystal display device including a light control film utilizing total reflection, a liquid crystal panel, and a directional backlight, the light control film includes a transparent base material, a light blocking layer, and a light diffusing portion. The light diffusing portion has a light output end surface on side closer to the transparent base material and a light input end surface on side opposite to the transparent base material, the light input end surface having a larger area than the light output end surface. A film thickness of the light diffusing portion is larger than a thickness of the light blocking layer. A material having a smaller refractive index than the light diffusing portion is present in a cavity defined by the light diffusing portion, and the film anisotropically diffuses light.

The invention provides an elastic wave vector imaging method and device, a storage medium and an apparatus. The method comprises the steps of building a conversion relation between group angles and polarizing angles by using the P wave speed of a set direction of an anisotropic medium of each point in an imaging area, the S wave speed of each set direction and anisotropic parameters; using an elastic wave equation to perform wave field depth prolongation of multi-component earthquake data in the imaging area to obtain a focus forward propagation wave field and a shot record back propagation wave field and corresponding Poynting vectors; according to set time intervals, decomposing the focus forward propagation wave field and the shot record back propagation wave field by using the Poyntingvectors and the conversion relation between group angles and polarizing angles; performing vector imaging of elastic waves in anisotropic media by using wave field decomposition results correspondingto all shots in the multi-component earthquake data. The imaging efficiency and accuracy can be improved.

The invention relates to a method for improving the durability of a GH3536 alloy manufactured by a selective laser melting technology, and belongs to the technical field of alloy melting. The heat treatment process of the GH3536 alloy is adjusted, the heat treatment process of the alloy is optimized, so that the typical high-temperature endurance performance of the alloy is achieved, and the method has great significance in the SLM technology and alloy application. The method has the beneficial effects that the typical high-temperature endurance property of the GH3536 alloy prepared by the SLMcan reach the forging standard, and the anisotropy of the endurance property of the alloy caused by the non-uniform structure of the alloy prepared by the SLM is eliminated.

The invention discloses a laser composite additive manufacturing method for controlling flowing of a molten pool based on pulse laser, and belongs to the field of laser advanced additive manufacturing. The laser composite additive manufacturing method comprises the steps that continuous laser beams are used for melting the surface of a base material and alloy powder, pulse laser beams are introduced to conduct synchronous impact treatment on the molten pool while the molten pool is formed, and the laser composite additive manufacturing process of controlling the molten pool through the pulse laser is executed; and in the manufacturing process, the morphology and flowing of the molten pool are controlled through the pulse laser beams, the flatness of a cladding surface is improved, the residual stress in a cladding layer is adjusted, and the anisotropy of the performance of the cladding layer is reduced. The forming quality and residual stress of the cladding layer are improved, meanwhile, the flatness and mechanical performance of the cladding layer are improved, the production efficiency can be improved, the method is suitable for continuous multi-lap-joint or multi-layer stacked laser additive manufacturing work, and the method is suitable for the field of laser additive manufacturing of surface remanufacturing repair or 3D printing direct forming.

The invention provides a rock anisotropy detection system which comprises a reaction kettle, a laser, an interferometer, an oscilloscope and a control unit, wherein the reaction kettle is used for simulating the rock stratum environment; the laser is arranged outside the reaction kettle and is used for emitting laser to to-be-detected rock and exciting the to-be-detected rock to generate ultrasonic wave; the interferometer is arranged outside the reaction kettle and is used for detecting the ultrasonic wave; the oscilloscope is connected with the interferometer; the control unit is connected with the reaction kettle and is used for controlling the internal environment of the reaction kettle. The rock anisotropy detection system can be used for simulating the high temperature environment in which the rock is positioned during the drilling process, is easy to operate and is capable of lowering the detection cost.

The invention discloses a magnetic nano composite material and a preparation method thereof, and an optical-property-adjustable dispersion liquid and a preparation method thereof. The magnetic nano composite material comprises a magnetically coated anisotropic nano structure, preferably a magnetically coated anisotropic nano structure. The dispersion liquid with the adjustable optical property comprises a magnetic nano composite material. The preparation method of the dispersion liquid comprises the following steps: preparing a two-dimensional magnetic nano composite material; dispersing the two-dimensional magnetic nano composite material in a solution to prepare a colloid dispersion solution; and applying an external magnetic field to the colloid dispersion liquid to obtain the compositematerial dispersion liquid with adjustable optical properties. The preparation method is simple in condition, short in preparation period, low in cost and easy to implement, and the prepared dispersion liquid with the adjustable optical property is high in magnetic responsiveness and adjustable in optical property and has great application potential in the field of display devices.

The invention discloses a magnetic random access memory storage unit and a magnetic random access memory. The storage unit comprises a reference layer, a barrier layer and a first free layer which are stacked from bottom to top, a second free layer is further arranged above the first free layer, a vertical magnetic coupling layer is arranged below the second free layer, and a magnetic damping barrier layer is arranged above the second free layer; the second free layer has a weaker magnetization intensity vector but stronger perpendicular magnetic anisotropy than the first free layer; the vertical magnetic coupling layer provides additional vertical interface anisotropic sources for the first free layer and the second free layer and is used for realizing ferromagnetic coupling of the first free layer and the second free layer, so that a magnetization vector in the second free layer is always parallel to a magnetization vector in the first free layer; the magnetic damping barrier layer provides an additional source of anisotropy to the second free layer while reducing the magnetic damping coefficient of a film layer. Due to the addition of the second free layer, the thickness of the free layer is increased, the magnetic damping coefficient is reduced, the tunneling magnetoresistance (TMR) and a thermal stability factor are increased, and the critical write current is not increased.

The present invention provides a method for producing a single surface metal foil layer laminated body. Said method comprises steps of pulling a polymer layer capable of forming a optical anisotropic melt phase and a double-surface metal foil layer laminated body formed by a metal foil layer at its top surface and a metal foil layer at its bottom surface apart in the thickness direction of said polymer mentioned above, into an upper laminated body and a lower laminated body, therefore, said polymer layer and said laminated body are divided into a polymer layer capable of forming a optical anisotropic melt phase and a first single surface metal foil layer laminated body formed by the metal foil layer of said top surface, and a polymer layer capable of forming a optical anisotropic melt phase and a second single surface metal foil layer laminated body formed by the metal foil layer of said bottom surface. A double-surface metal foil layer laminated body and an installation circuit baseplate utilizing said laminated body are also manufactured in accordance with the present invention.

The invention belongs to the rare-earth permanent-magnet material technical field. To solve the problems of aeolotropic nanometer rare-earth permanent-magnet prepared by the prior art of much crackles, uneven magnetism and limitation to the shape and direction of magnetic texture, the invention leads to the blank at least containing hard magnetic phase amorphous or nanocrystal to be organized to form magnetic texture by temperature distortion; powder is then made, the material containing at least the nanocrystal powder is placed into a die and is pressed to be formed under magnetic field, theforming rough part is densified to prepare aeolotropic rare-earth permanent-magnet material. The material prepared by the method is aeolotropic rare-earth permanent-magnet material, at least comprising a transition thulium hard magnetic phase nanocrystal with magnetic texture which is arranged in parallel according to the applied magnetic field. Without crackles, the magnet can be in a shape of circular ring, tile, cuboid, cube or round bar with different slenderness ratio. The direction of the whole magnetic texture of magnet which is the magnetism charging direction can be designed according to requirements of the engineering. The remanence variation of magnet is less than 1.5 percent.

The invention discloses a weak anisotropy measuring device and a weak anisotropy measuring method for measuring a large-size isotropic transparent medium, and belongs to the technical field of material performance testing. The measuring device comprises a condensation cavity, a pumping source, a laser medium, a transparent medium, a resonant cavity, a polarization test module, a signal analysis module, a weak anisotropy calculation module and an indication light path, wherein the pumping source, the laser medium and the transparent medium are fixed in the condensation cavity; the laser medium and the pumping source are fixed in the light gathering cavity, and the laser medium is located at the focus of the light gathering cavity; and the light gathering cavity is arranged in the resonant cavity. The invention further provides a measuring method and application of the measuring device. The problem that weak anisotropy of the isotropic transparent medium is difficult to accurately measure in the prior art is solved, the mode of combining polarization detection and signal analysis is adopted, and the detection precision, speed and accuracy are greatly improved.