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45 results about "Hexagonal array" patented technology

Hexagonal array eddy current probe

The invention discloses a hexagonal array eddy current probe, and belongs to the field of eddy current probes, the hexagonal array eddy current probe comprises a plurality of eddy current detection coils, the detection coils are self-inductance coils, the coil units are the same in size and consistent in parameter, the coils are arranged in an array according to a hexagonal rule, and the distance between the adjacent coils is equal and is smaller than the outer diameter of the coils. According to the invention, through a topological connection mode that one coil is arranged at an interval, a detection blind area right below a single coil is effectively covered and eliminated, and the detection accuracy is improved.
Owner:SICHUAN UNIV

VCSEL array oxidation aperture intelligent optimization design method

The invention discloses a VCSEL (Vertical Cavity Surface Emitting Laser) array oxidation aperture intelligent optimization design method, which is used for improving the temperature distribution uniformity of a VCSEL array so as to improve the overall performance of a laser. According to the method, firstly, a BP neural network model is trained to replace a thermoelectric feedback model, the mapping relation between the oxidation aperture and the steady-state junction temperature is established, then the oxidation aperture of each unit of the VCSEL array is directly selected to carry out chromosome coding, a fitness function representing the temperature uniformity of the VCSEL array is constructed to provide an optimization standard, and the optimization accuracy of the temperature uniformity of the VCSEL array is improved. And finally, adopting a genetic algorithm to realize the optimal optimization design of the oxidized aperture of the VCSEL array with any shape and any number of units. According to the method, the labor cost and the time cost in seeking the optimal oxidation aperture design of the VCSEL array are effectively reduced. And finally, oxidation aperture optimization design is carried out by taking a hexagonal VCSEL array with 61 units as an example, and the effectiveness and practicability of the method are proved.
Owner:BEIJING UNIV OF TECH

Fluorescent cone embedded hexagonal array composite structure fluorescent ceramic as well as preparation method and application thereof

The invention discloses a fluorescent cone embedded hexagonal array composite structure fluorescent ceramic as well as a preparation method and application thereof. According to the composite structure fluorescent ceramic, ceramic with the component being T serves as a base body, cone fluorescent ceramic units which are arranged in order are constructed in the base body through the combination of the gel technology and the photocuring 3D printing technology, and finally the fluorescent cone embedded hexagonal array composite structure fluorescent ceramic is formed. The problem of light spot expansion of the fluorescent ceramic is effectively solved by accurately regulating and controlling the matching relationship between the size of the conical bottom surface and the incident laser light spot and utilizing the synergistic effect generated by the optical characteristic difference between the ceramic matrix and the fluorescent ceramic. In addition, a three-dimensional efficient heat conduction network is formed between the ceramic matrix and the fluorescent ceramic, and heat accumulated under excitation of high-power-density laser can be quickly dissipated. The composite structure fluorescent ceramic with the fluorescent cone embedded into the hexagonal array can realize high-collimation, high-efficiency and high-brightness luminescence, and can be widely applied to the fields of laser illumination and display after being packaged with a laser excitation source.
Owner:HENAN UNIVERSITY OF TECHNOLOGY

Gaming system

Systems and methods to generate and enable use of a skill game. An embodiment of a system may include a processor and a computer-readable storage medium, coupled with the processor, comprising instructions. Upon input from a player, the instructions, when executed by the processor, may initiate play of the skill game, which can include a hexagonal based array of cells having a series of symbols displayed in a presentation order in the hexagonal array of cells. The player must exercise skill to change at least one of the displayed symbols by placing a “wild” symbol in a cell to complete a sequence or pattern of symbols. The instructions can allow for the expansion or modification of the hexagonal based array of cells based on the game instructions and / or based on player election.
Owner:SAVVY DOG SYST LLC

A nano-emulsifier and its preparation method and application

The present application discloses a nano-emulsifier and its preparation method and application. The nano-emulsifier is prepared by polymerization reaction of carbon dot material, propylene oxide, ethylene oxide and a catalyst. The carbon dot material is a nanoparticle formed by stacking layered structures, and the carbon atoms in any layered structure are arranged in a regular hexagonal array, and the edge of any layered structure has a hydroxyl group that reacts with propylene oxide and / or ethylene oxide. The present application uses a carbon dot material with a layered structure as an initiator. Not only does it utilize the layered structure arrangement to make the carbon dot material have a higher chemical stability, thereby making the nano-emulsifier have the characteristics of high temperature and high salt resistance; it also introduces a carbon dot material containing multiple hydroxyl groups and hydrophobic groups on the surface, so that the prepared nano-emulsifier forms a strong interaction with the cycloalkanes, asphaltenes and colloids of the crude oil components, thereby significantly improving the low-temperature oil-water separation efficiency of the crude oil emulsion; the raw materials are green and economical, which is conducive to large-scale industrial promotion and production.
Owner:JING ZHOU SHI LONG HUA SHI YOU HUA GONG YOU XIAN GONG SI

Method for preparing geometric groove structure based on femtosecond laser to regulate and control electro-deposition sites of metal negative electrode and metal negative electrode

The invention provides a method for preparing a geometric groove structure based on femtosecond laser to regulate and control electro-deposition sites of a metal negative electrode and the metal negative electrode, and the method comprises the following steps: S1, drawing a microstructure pattern on a metal surface, the microstructure pattern being in the shape of a periodically arranged regular triangle or regular hexagon array; s2, the metal surface is ablated through femtosecond laser, and a geometric groove structure is formed in the metal surface according to the microstructure pattern; the wavelength of the femtosecond laser beam is 532-1064nm, the power of the femtosecond laser beam is 0.1-10W, the pulse frequency of the femtosecond laser beam is 100kHz-1MHz, the pulse width of the femtosecond laser beam is 100-500fs, and the light spot diameter of the femtosecond laser beam is 1-20 microns. Through regular triangle and regular hexagon periodic geometric groove design, multi-angle cooperative guidance of metal ions is realized, dendritic crystal nucleation density is remarkably inhibited, and electrochemical performance is improved; the method is easy and convenient to operate and high in repeatability, and a processing system is compatible with large-scale production.
Owner:WUHAN UNIV OF TECH

A laser soldering ball device for a plug-in part and a soldering method

A laser soldering ball device and welding method for a plug-in part, comprising a feeding part, a laser welding part, a visual inspection part, a discharging part and a turntable part; the laser welding part includes a nine-ball laser welding part and a ten-ball laser welding part; the feeding part, the nine-ball laser welding part, the visual inspection part, the ten-ball laser welding part, the visual inspection part and the discharging part are sequentially and uniformly arranged on the periphery of the turntable part in a hexagonal array form; the turntable part includes a turntable and a turntable base, and the turntable is arranged on the upper part of the turntable base in a rotatable manner; 6 toolings are arranged on the turntable part, and the toolings are flipable flat plate structures; it has the advantages of completing the welding of multiple terminals at one time, fewer processes, convenience and speed, greatly improving the efficiency, and high automation. It can not only automatically complete the welding of multiple terminals at one time, but also realize the automatic operations of automatic feeding, automatic welding and automatic discharging, resulting in high welding accuracy, reduced labor intensity of workers, high production efficiency and high output, and is particularly suitable for the production of a large number of terminals.
Owner:JINING AVOVE ELECTRONICS TECH CO LTD

Systems and methods for micropatterning objects

Implanted medical devices need a mechanism of immobilization to surrounding tissues, which minimizes tissue damage while providing reliable long-term anchoring. This disclosure relates to techniques for patterning arbitrarily shaped 3D objects and to patterned balloon devices having micro-or nano-patterning on an outer surface of an inflatable balloon. The external pattern can provide enhanced friction and anchoring in an aqueous environment. Examples of these types of patterns are hexagonal arrays inspired by tree frogs, corrugated patterns, and microneedle patterns. The patterned balloon devices can be disposed between an implant and surrounding tissues to facilitate anchoring of the implant.
Owner:CORNELL UNIVERSITY

Single-polarization photonic crystal fiber

The present application relates to a single-polarization photonic crystal fiber having a plurality of circular air holes formed therein and extending axially through the single-polarization photonic crystal fiber. The plurality of circular air holes includes two large circular air holes, a plurality of small circular air holes, and a plurality of medium circular air holes. The single-polarization photonic crystal fiber has a circular cross-section, wherein the two large circular air holes are symmetrically distributed about the center of the cross-section. The plurality of small circular air holes are arranged around the two large circular air holes, forming a multi-layer polygonal air hole ring with increasing size from the inside out. The outermost layer of the hexagonal array comprises a plurality of medium circular air holes. The distance between the centers of two adjacent medium circular air holes and two adjacent small circular air holes is a fixed pitch, and the distance between the centers of the two large circular air holes is twice the pitch. The structure of the single-polarization photonic crystal fiber of the present application is simple and easy to manufacture.
Owner:SHENZHEN SUBLIME PHOTONICS CO LTD

Nanometer crescent array structure for enhancing chiral optics

The invention relates to the technical field of production and processing, and particularly discloses a nano crescent array structure for enhancing chiral optics, which comprises a first substrate and crescent metal positioned on the first substrate, wherein the crescent metal is a chiral structure unit which is arranged on the upper surface of the first substrate and is in a hexagonal array, the chiral structure unit comprises metal crescent, the irregularity of the metal crescent can be adjusted, the crescent center spacing distances of the metal crescent are equal, and the metal crescent is arranged on the upper surface of the first substrate and is in a hexagonal array; the irregularity of the metal crescent can be adjusted, the chiral structure units are uniformly arranged in the transverse direction and the longitudinal direction of the first substrate, and the first substrate is made of a light-transmitting material. According to the nano crescent array structure for enhancing chiral optics, a regular hexagon arrangement mode is added on the basis of an original single irregular metal crescent, so that the circular dichroism of the chiral optical structure is remarkably enhanced.
Owner:GUILIN UNIV OF ELECTRONIC TECH

Piezoelectric micromechanical ultrasonic transducer and preparation method and transmitting and receiving method thereof

The invention provides a piezoelectric micromechanical ultrasonic transducer (PMUT), which comprises an ultrasonic transduction chip and a PMUT functional unit array formed by M * N regular hexagonal array elements, and the ultrasonic transduction chip sequentially comprises a top electrode layer, a piezoelectric layer, a bottom electrode layer and a substrate layer from top to bottom; a top electrode bonding pad and a bottom electrode bonding pad are arranged on the peripheral edge of the chip, each array element area is provided with an annular cavity below the upper surface of the substrate layer, and an annular vibrating diaphragm is formed on a reserved part on each annular cavity; each array element also sequentially comprises a top electrode layer, a piezoelectric layer, a bottom electrode layer and an annular diaphragm layer from top to bottom, and the same layer is connected to form each layer; isolation deep grooves are formed in the substrate layer between the adjacent edges of the adjacent array elements and penetrate upwards so as to suppress crosstalk between the array elements; a rotten liquid channel needs to be formed in the annular vibrating diaphragm; the invention further provides a manufacturing method of the PMUT and an ultrasonic transmitting and receiving method.
Owner:NINGBO UNIV

Self-assembled guided hole and via patterning over grating

Described herein are IC devices include vias deposited in a regular array, e.g., a hexagonal array, and processes for depositing vias in a regular array. The process includes depositing a guiding pattern over a metal grating, depositing a diblock copolymer over the guiding pattern, and causing the diblock copolymer to self-assemble such one polymer forms an array of cylinders over metal portions of the metal grating. The polymer layer can be converted into a hard mask layer, with one hard mask material forming the cylinders, and a different hard mask material surrounding the cylinders. A cylinder can be selectively etched, and a via material deposited in the cylindrical hole to form a via.
Owner:INTEL CORP

Systems and methods for micropatterning objects

Implanted medical devices need a mechanism of immobilization to surrounding tissues, which minimizes tissue damage while providing reliable long-term anchoring. This disclosure relates to techniques for patterning arbitrarily shaped 3D objects and to patterned balloon devices having micro- or nano-patterning on an outer surface of an inflatable balloon. The external pattern can provide enhanced friction and anchoring in an aqueous environment. Examples of these types of patterns are hexagonal arrays inspired by tree frogs, corrugated patterns, and microneedle patterns. The patterned balloon devices can be disposed between an implant and surrounding tissues to facilitate anchoring of the implant.
Owner:CORNELL UNIVERSITY

Systems and methods for micropatterning objects

Implanted medical devices need a mechanism of immobilization to surrounding tissues, which minimizes tissue damage while providing reliable long-term anchoring. This disclosure relates to techniques for patterning arbitrarily shaped 3D objects and to patterned balloon devices having micro- or nano-patterning on an outer surface of an inflatable balloon. The external pattern can provide enhanced friction and anchoring in an aqueous environment. Examples of these types of patterns are hexagonal arrays inspired by tree frogs, corrugated patterns, and microneedle patterns. The patterned balloon devices can be disposed between an implant and surrounding tissues to facilitate anchoring of the implant.
Owner:CORNELL UNIVERSITY

Method for improving hydrogen storage efficiency through defective carbon nanotube bundle

The invention relates to the technical field of hydrogen energy storage materials, and discloses a method for improving hydrogen storage efficiency through a defective carbon nanotube bundle, which comprises the following steps: S1, preparing a single-walled carbon nanotube bundle which is formed by arranging a plurality of single-walled carbon nanotubes in a hexagonal array; s2, a vacancy defect is introduced into the tube wall of the single-walled carbon nanotube, and the size of the vacancy defect is not smaller than the critical size NV = 8; s3, adjusting the distance between adjacent single-walled carbon nanotubes in the single-walled carbon nanotube bundle to 5.1-9; and S4, placing the single-walled carbon nanotube bundle with the vacancy defect in a hydrogen-containing atmosphere, and carrying out physical adsorption of hydrogen under set temperature and pressure conditions. Through introduction of vacancy defects, the mass of the carbon nanotubes is reduced, and hydrogen storage efficiency is far higher than that of isolated and perfect single-walled carbon nanotubes in combination with double adsorption sites of in-tube cavities and inter-tube gaps of the single-walled carbon nanotube bundles.
Owner:CHONGQING UNIV OF ARTS & SCI

Large hydrogen storage tank leakproof concentration multidirectional detection system and detection method thereof

The invention discloses a multi-directional concentration detection system for leakage prevention of a large hydrogen storage tank and a detection method thereof, and relates to the field of leakage prevention of hydrogen storage tanks, and the system comprises a sensor module, a main data processing module, an imaging monitoring module, a distributed secondary data processing module, an alarm module, a communication module and a power supply module. The surface of a large hydrogen storage tank is divided into three-dimensional grids with different specifications, and a group of multi-type gas sensor arrays are arranged in the three-dimensional grids. According to the invention, three-dimensional dynamic sensing is realized, a top hexagonal array, middle annular nodes and bottom redundancy monitoring are arranged in a layered gridding manner, and a plurality of sensors are combined for cooperative use, so that the omission ratio is greatly reduced, a hydrogen full diffusion path can be greatly covered, leakage source positioning and diffusion prediction are realized based on data fusion of Kalman filtering and CFD models; and response delay is shortened.
Owner:NANTONG HYDROGEN ENERGY TECH CO LTD

Methods for fabricating pressure vessels

A pressure vessel includes curved sidewalls configured as a frame having a polygonal outline, a planar top side and a planar bottom side attached to the curved sidewalls forming a sealed pressure chamber therebetween. Each planar side includes a contoured surface having shaped pressure resistant features formed thereon. A preferred method for forming the pressure resistant features includes hydraulic pressurization to induce plastic strain. The pressure vessel also includes an array of internal support posts within the sealed pressure chamber attached to the planar sides in a geometrical pattern, such as a hexagonal array. The support posts can be solid metal cylinders, hollow tubes or tubes through which reinforcing materials, such as carbon fiber, glass fiber, or fiber / epoxy tape have been passed. A composite pressure vessel includes tubular internal support posts reinforced with reinforcing materials, as well as contoured surfaces and curved sidewalls reinforced with these same reinforcing materials.
Owner:HYDROGEN COMPONENTS INC

Electrode for spectrometer

Invention relates to electrodes for Tyndall-Powell ion gate (ion shutter) in, for example, an ion mobility spectrometer. Embodiment-1: Electrode (or conductive mesh, grid 113,123) within a Tyndall-Pow
Owner:SMITHS DETECTION WATFORD LTD

All-sky polarization perception device based on curved surface biomimetic compound eye and heading solution method

PendingCN122281879AEngineeringCelestial coordinate system
This invention provides an all-sky polarization sensing device and heading calculation method based on a curved surface biomimetic compound eye, relating to the fields of biomimetic navigation and optical sensing technology. The device includes: a curved substrate; several polarization imaging units fixedly arranged in a close-packed hexagonal array on the outer surface of the curved substrate; and a processing unit electrically connected to all polarization imaging units. The curved substrate includes first-level, second-level, and third-level sub-surfaces, each with a textured layer, forming a fractal moth-eye structure. The method employs an online self-calibration method based on field-of-view overlap constraints to correct the original image data acquired by each polarization imaging unit; maps all corrected image data to a virtual celestial coordinate system to generate an all-sky polarization angle distribution map; when some units are obstructed, the polarization information of the obstructed area is reconstructed using an interpolation algorithm, thereby calculating the absolute heading angle of the carrier. This invention achieves highly robust and high-precision all-weather autonomous navigation.
Owner:NORTHEASTERN UNIV AT QINHUANGDAO

A method for efficiently improving thermal fatigue resistance of lead-free solder interconnection BGA package solder joints

The application discloses a method for efficiently improving thermal fatigue resistance of a lead-free solder interconnection BGA package welding spot, and relates to the field of chip connection. Ultrafast laser is used to process a dense arrangement of concentric hexagonal array microstructures on a substrate, solder balls are adhered to chip pins, the solder balls and the chip pins are fused and adhered together, and the substrate and the chip are subjected to BGA packaging. The application improves the connectivity of the solder and the substrate by changing the appearance characteristics of the substrate. The method is simple in operation, wide in application range and capable of satisfying packaging requirements of different materials and processing parameters.
Owner:BEIJING UNIV OF TECH

Swimming pool dome multi-curved-surface modular ceramic plate top surface design structure

The invention discloses a swimming pool dome multi-curved-surface modular ceramic plate top surface design structure which comprises a conversion layer hung on the top surface of a building through hanging rods, a plurality of mounting holes arranged in an array are formed in the conversion layer, the mounting holes are in a regular hexagon shape, and the mounting holes arranged in the array form a honeycomb structure; a ceramic plate unit; a clamping module; wherein the clamping modules on the back faces of the ceramic plate units are clamped in the mounting holes, the protruding parts on the back faces of the ceramic plate units make contact with the surface of the conversion layer, each clamping module comprises a clamping block and a supporting rod, each clamping block is of a cylindrical structure, a plurality of buckling blocks are arranged on each clamping block in the circumferential direction, and the buckling blocks are elastically connected to the clamping blocks; a guide inclined face is arranged on the upper side of the buckling block, a baffle ring is further arranged on the clamping block, and the distance between the buckling block and the baffle ring is equal to the thickness of the conversion layer. Compared with the prior art, the problem that a ceramic plate with a multi-curved-surface model is inconvenient to hang in the top surface construction process is solved.
Owner:GOLD MANTIS CONSTR DECORATION

Method for processing hexagonal channel micropore array optical element based on laser point-by-point punching induced etching rapid prototyping

The invention relates to the technical field of micro-channel plates, and provides a method for rapidly forming and processing a hexagonal channel micropore array optical element based on laser point-by-point punching induced etching. The method comprises the following steps of: polishing transparent glass serving as a substrate, and processing through a photoetching process to form a hollow hexagonal array pattern on the surface of the glass substrate; then a galvanometer system is used for controlling a laser beam to punch holes point by point at an S-shaped high speed according to a certain point interval, then wet etching treatment is carried out, a laser modification area is removed, and finally photoresist at the position of the hollow hexagonal pattern is removed, so that the hexagonal channel micropore array is obtained. According to the method, a laser point-by-point punching induced etching rapid prototyping mode assisted by a photoetching mask pattern is adopted, the laser processing precision is converted into the precision of the mask pattern, and the hexagonal channel micropore array with the ultrahigh array precision of + / -0.01 microns is efficiently manufactured; the problems of leakage holes, dislocation, multifilament vertex angle distortion and multifilament boundary deformation existing in the traditional process of directly processing a hexagonal channel array by laser are solved.
Owner:NORTH NIGHT VISION SCI&TECH (NANJING) RES INST CO LTD

Self-assembled guided hole and via patterning over grating

Described herein are IC devices include vias deposited in a regular array, e.g., a hexagonal array, and processes for depositing vias in a regular array. The process includes depositing a guiding pattern over a metal grating, depositing a diblock copolymer over the guiding pattern, and causing the diblock copolymer to self-assemble such one polymer forms an array of cylinders over metal portions of the metal grating. The polymer layer can be converted into a hard mask layer, with one hard mask material forming the cylinders, and a different hard mask material surrounding the cylinders. A cylinder can be selectively etched, and a via material deposited in the cylindrical hole to form a via.
Owner:INTEL CORP

Nano demulsifier as well as preparation method and application thereof

The invention discloses a nano demulsifier as well as a preparation method and application thereof. The nano demulsifier is prepared from a carbon dot material, epoxypropane, ethylene oxide and a catalyst through a polymerization reaction, the carbon dot material is nano-particles formed by stacking layered structures, carbon atoms in any layered structure are arranged in a regular hexagon array, and the edge of any layered structure is provided with hydroxyl which is subjected to polymerization reaction with propylene oxide and / or ethylene oxide. According to the preparation method, the carbon dot material with a layered structure is taken as an initiator, and the carbon dot material has relatively high chemical stability by utilizing a layered structure arrangement mode, so that the nano demulsifier has the characteristics of high temperature resistance and high salt resistance; a carbon dot material with polyhydroxy and hydrophobic groups on the surface is introduced, so that the prepared nano demulsifier has strong interaction with cycloalkane, asphaltene and colloid of crude oil components, and the low-temperature oil-water separation efficiency of crude oil emulsion is remarkably improved; the raw materials are green and economical, and industrial large-scale popularization and production are facilitated.
Owner:JING ZHOU SHI LONG HUA SHI YOU HUA GONG YOU XIAN GONG SI

Hatching tray with large egg capacity of 162 eggs

The invention relates to the technical field of hatching equipment, and discloses a hatching tray with 162 large egg capacity, the whole hatching tray is in a cuboid shape, the hatching tray is composed of an outer frame and an egg containing area, four arc-shaped clamping claws are uniformly distributed in a circular ring array, the angular point position of each hexagon of a hexagonal array is provided with a supporting column, the supporting column extends downwards to be connected with the circular ring array below, and the supporting column is connected with the outer frame. An egg containing area in the hatching tray is of an upper-lower double-layer stacked structure, specifically, the upper layer is of a honeycomb-shaped hexagonal array layout, the utilization rate of a plane space is greatly increased, each hexagonal structure is used for limiting the movement range of large ends of hatching eggs, and the risks of slipping, collision and the like of the hatching eggs are prevented; due to the design of the grooves in the upper edge, the contact area of the hatching tray and hatching eggs can be increased, meanwhile, the permeability of the whole tray is improved, the interior of the hatching tray is divided into 162 egg containing areas by the upper honeycomb-shaped hexagonal array and the lower circular ring array, 162 hatching eggs can be contained, and a large amount of repeated rotating disc work is effectively reduced.
Owner:QINGDAO XINGYI ELECTRONIC EQUIP CO LTD

Energy-saving and environment-friendly floor plate for constructional engineering

The invention relates to an energy-saving and environment-friendly floor plate for constructional engineering, and belongs to the field of construction industry, the energy-saving and environment-friendly floor plate comprises a plate body, the plate body comprises an upper reinforcing mesh, a lower reinforcing mesh and concrete poured in the upper reinforcing mesh and the lower reinforcing mesh, a plurality of supporting assemblies are arranged between the upper reinforcing mesh and the lower reinforcing mesh, and each supporting assembly comprises a plurality of degradable supporting spherical shells. The degradable supporting spherical shells are arranged according to a regular hexagon array to form a hexagonal main body structure, a lightweight cavity structure is formed through the collaborative design that a spherical combination structure made of degradable materials is matched with an internal delay type expanding agent, and after concrete is hardened to have certain strength, the spherical combination structure is degraded, so that the strength of the concrete is improved, and the strength of the concrete is improved. The internal expanding agent reacts, the generated expansive force is effectively restrained and converted into the pre-compressive stress to the core concrete, the overall load bearing capacity can be improved through the internal pre-compressive stress under the effect of reducing the overall self weight, and the device has the characteristics of light building materials.
Owner:GONGDA INTERNATIONAL ENGINEERING & DESIGN CO LTD LTD

Ultrafast laser processing close-packed concentric hexagonal array type solar evaporator and preparation method thereof

The invention discloses an ultrafast laser processing close-packed concentric hexagonal array type solar evaporator and a preparation method thereof, and belongs to the technical field of solar evaporators. The front surface of the substrate is processed by using ultrafast laser to obtain a densely-arranged concentric hexagonal array type microstructure surface, and the densely-arranged concentric hexagonal array type microstructure surface is of an array structure formed by closely arranging a plurality of concentric hexagonal structure units. Each concentric hexagonal structure unit is formed by nesting multiple stages of hexagonal grooves with the same center and the spacing of about 30 microns, six edges of the outermost side of each concentric hexagonal structure unit are respectively overlapped with six edges of the outermost side of one concentric hexagonal structure unit in a bordering manner, and the rest can be done in the same manner. The densely-arranged concentric hexagonal array type microstructure surface is obtained through ultrafast laser processing, the absorbance, wettability, surface area and the like of the metal surface are improved, the surface evaporation performance can be improved, and the problems that an existing solar evaporator is complex in preparation process, low in evaporation efficiency and the like can be solved.
Owner:BEIJING UNIV OF TECH

Method for efficiently improving thermal fatigue resistance of lead-free solder interconnection BGA packaging welding spot

The invention discloses a method for efficiently improving thermal fatigue resistance of lead-free solder interconnection BGA packaging welding spots, and relates to the field of chip connection. The method comprises the following steps: processing densely arranged concentric hexagonal array microstructures on a substrate by using ultrafast laser, bonding solder balls at pins of a chip, melting and bonding the solder balls and the pins of the chip together, and carrying out BGA packaging on the substrate and the chip. According to the method, the connectivity of the welding flux and the substrate is improved by changing the morphological characteristics of the substrate. The method is simple to operate and wide in application range, and can meet the packaging requirements of different materials and processing parameters.
Owner:BEIJING UNIV OF TECH

Modular mounting system

A modular mounting system includes a panel with a hexagonal array of primary apertures each of which has at least three planes of symmetry. Each of the primary apertures is separated from an adjacent primary aperture by a secondary aperture comprising an elongated opening having a length that is greater than the width of a PALS strap. A mounting system comprising a backing plate, an optional separate indexing plate and a front mounting bracket can be assembled to the panel to provide a rigid attachment between the equipment and the panel.
Owner:FOUTZ GREG

Field curvature corrector for use in multi-electron-beam optical system

A multi-electron-beam (MEB) imaging system may include a field curvature corrector for individually correcting electron beamlets for field curvature blur by individually addressing microlenses of the field curvature corrector. The field curvature corrector may include a conductive plate, wherein the conductive plate includes a plurality of holes arranged in a hexagonal array. The field curvature corrector may include a microlens array, wherein the microlens array includes a plurality of microlenses formed on an insulative plate, wherein the plurality of microlenses are arranged in a hexagonal pattern to match the hexagonal pattern of the holes of the conductive plate. The microlens array includes a plurality of power lines for individually addressing each of the microlenses of the microlens array.
Owner:KLA CORP