17 results about "Hexagonal array" patented technology

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.

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.

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.

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.

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.

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.

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.

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.

The invention relates to a conical gradually-changed aperture microchannel plate and a preparation method thereof, and the preparation method comprises the steps: through the periodic linear increase of the wire drawing rate, preparing a conical optical fiber monofilament and a conical structure filament with the same taper angle and length as the conical optical fiber monofilament. Arranging the conical optical fiber monofilaments according to a positive dense hexagon, and inserting the conical structural filaments into gaps among the conical optical fiber monofilaments to form a composite rod; the large end faces of the conical optical fiber monofilaments uniformly face the first direction, and the small end faces of the conical structural filaments uniformly face the first direction. And drawing and arranging the composite rod to prepare the micro-channel plate blank. The micro-channel plate blank is subjected to acid etching, core glass removal, hydrogen reduction and electrode plating, and the conical gradually-changed-aperture micro-channel plate is manufactured. The method is simple in process and low in cost, improves gain, reduces noise, improves the overall performance of the microchannel plate, and is more practical.

The application 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 a crescent-shaped metal on the first substrate; wherein the crescent-shaped metal is a chiral structure unit arranged in a hexagonal array on the upper surface of the first substrate; the chiral structure unit comprises crescent-shaped metals with adjustable irregularities and equal interval distances between crescent centers, the crescent-shaped metals are arranged in a hexagonal array on the upper surface of the first substrate, and the irregularities of the crescent-shaped metals are adjustable; the chiral structure unit is uniformly arranged in the transverse and longitudinal directions of the first substrate; and the material of the first substrate is a light-transmitting material. The nano crescent array structure for enhancing chiral optics significantly enhances the circular dichroism of the chiral optical structure by increasing a regular hexagonal arrangement mode on the basis of original single irregular crescent-shaped metal.

Vertical gallium nitride (GaN) field effect transistors (FETs) are presented herein. A vertical GaN FET includes cylindrical trench gates arranged in a hexagonal array to form a vertical FET channel. At a surface of the vertical GaN FET is a source layer formed in a GaN epitaxial layer and formed above a GaN substrate. A channel can be formed in the form of "GaN pillars" between the cylindrical gates; and FET characteristics, including threshold voltage, can be determined at least in part as a function of trench nearest neighbor distance. Thus, the trench nearest neighbor distance can be selected so that the vertical GaN FET operates either as an enhancement mode transistor or as a depletion mode transistor.

The present application belongs to the field of microscope technology, and provides a hexagonal lattice illumination super-resolution microscopy system and image reconstruction method, which comprises: a digital micromirror device containing a plurality of micromirrors, the micromirrors being set as a hexagonal array, reflecting the illumination light to modulate the illumination light into a hexagonal structured light; and a central control unit configured to control the digital micromirror device to adjust the micromirror reflection angle in a specific time sequence to generate a plurality of phase shift images, and to reconstruct the image stack after the camera detection module completes image acquisition to output a super-resolution image. The advantage of the present application is that by using hexagonal structured light, it is not necessary to take pictures in three directions as in traditional super-resolution structured light illumination, which reduces the number of single-phase images required for one super-resolution image in principle, and performs parallel operation under GPU, thereby improving the time required for super-resolution image reconstruction, and making the reconstruction frame rate reach the standard required for real-time reconstruction.

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.

The application provides a low-conduction-resistance double-trench-gate SOI-LDMOS layout structure and a forming method thereof, and the structure at least comprises an SOI substrate and a plurality of array-arranged hexagonal LDMOS units formed in a top layer of silicon of the SOI substrate. The LDMOS power module is formed by splicing the hexagonal units, and since two trench gates are formed, there are two longitudinal conductive channels in the module, so that the current conduction resistance is reduced, the device current density is increased, and the device performance is obviously improved. The hexagonal ring-shaped trench gate makes the current channel also have six directions, and the current processing capacity is doubled compared with the traditional strip-shaped gate device. The hexagonal array-distributed LDMOS units can make the chip area utilization reach the optimum, and there is no area waste, which is obviously superior to the traditional circular array distribution.

The application relates to a method for improving the electromigration reliability of lead-free interconnection welding spots based on superfast laser processing hexagons, and relates to the technical field of material processing and welding. A hexagonal array groove microstructure is prepared on the end face of a to-be-interconnected welding body by adopting a superfast laser processing process, the hexagonal array groove microstructure is composed of multiple independent hexagonal linear groove units, the six edges of the hexagonal linear groove unit correspond to linear grooves, and each edge of each hexagonal linear groove unit is provided with another hexagonal linear groove unit outside; then lead-free interconnection welding is adopted to improve the electromigration reliability. The multi-scale hexagonal array micro-nano structure effectively improves the surface area of the connecting face, is beneficial to the uniform distribution of series brazing filler metals and the mechanical combination after solidification, and is used for solving the problem of poor electromigration failure performance of the existing linear welding spots.

The utility model discloses a hexagonal array optical linear LED lamps and lanterns, including the lamp body of bottom opening setting, the top of lamp body is equipped with the mounting groove, the mounting groove is installed with the pendant connecting piece, the front and rear outside of lamp body all is equipped with a installation clamping groove, the inside of lamp body is installed with a plurality of continuation's light source board from top to bottom in proper order, a plurality of continuation's optical main part and a plurality of continuation's reflector cover main body, the bottom of light source board is equipped with a plurality of downward emitting's LED lamp pearl, the optical main part is equipped with the lens of cover in LED lamp pearl, the reflector cover main body is equipped with the reflector cover of cover in lens, the reflector cover is gradually larger from top to bottom setting, the cross section of reflector cover is regular hexagon setting. The utility model simple structure, the installation mode is various, can be embedded installation, also can be open installation, also can be the installation of hanging line type, and installation is not limited, and the installation is convenient, and the illumination is even, and the anti -dazzle effect is good, and the use experience is good.

The application discloses a VCSEL array oxidation aperture intelligent optimization design method, which is used for improving the temperature distribution uniformity of a VCSEL array, thereby improving the overall performance of the laser. Firstly, the application replaces a thermoelectric feedback model by training a BP neural network model, establishes a mapping relationship between the oxidation aperture and the steady-state junction temperature, then directly selects the oxidation apertures of each unit of the VCSEL array to code the chromosomes, constructs a fitness function representing the temperature uniformity of the VCSEL array to provide an optimization standard, and finally adopts a genetic algorithm to realize the optimal optimization design of the oxidation aperture of the VCSEL array with an arbitrary shape and a unit number. The application effectively shortens the labor cost and time cost in seeking the optimal oxidation aperture design of the VCSEL array. Finally, the 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.