22 results about "Icosahedron" patented technology

The invention discloses a heat-resistant aluminum alloy material and a preparation method and application thereof, and belongs to the technical field of additive manufacturing aluminum alloy materials. The heat-resistant aluminum alloy material comprises the following components in percentage by mass: 0.5-6% of Fe, 0.5-6% of Cr, 0.5-3% of Ti, less than or equal to 2% but not equal to 0 of Mn, less than or equal to 2% but not equal to 0 of Sc, less than or equal to 2% but not equal to 0 of Zr and the balance of Al and inevitable impurities. By optimizing the component proportion, the preparation method and the like, in the microstructure of the heat-resistant aluminum alloy material, the interior of the heat-resistant aluminum alloy material is of a bimodal grain structure, the boundary of a molten pool is mainly isometric crystals, the center of the molten pool is columnar crystals, and an icosahedron nanometer quasi-crystal phase and an intermetallic compound strengthening phase are further distributed on the boundary of the molten pool and the center of the molten pool in a dispersed mode; the problems that when a traditional aluminum alloy material is used for additive manufacturing forming, hot cracks or macroscopic cracks occur, and the mechanical property of a formed product is poor are fundamentally solved.

The invention belongs to the technical field of vibration reduction, and discloses a pipeline broadband vibration suppression compact superstructure and a design method thereof.The compact superstructure is used for vibration reduction of a pipeline body and comprises superstructure unit cells, the superstructure unit cells are installed on the outer wall of the pipeline body and composed of 12 mass units and 30 connecting rods, and the mass units are connected with the connecting rods. Each mass unit is connected with the five connecting rods to form an icosahedron structure, and each mass unit comprises a mass ball and an external wrapping layer wrapping the outer wall of the mass ball. The multi-direction and multi-frequency local resonance device has the beneficial effects that through the space spring design of the superstructure unit cells and the space array distribution of the vibrators, multi-direction and multi-frequency local resonance is achieved, then a plurality of vibration reduction belts can be generated in multiple directions of the pipeline, and the broadband vibration reduction design of the pipeline under the limited space condition is achieved.

Implantable prostheses and related methods are generally described. In some embodiments, the prosthesis may be used for soft tissue reconstruction. The prosthesis may be formed from a three-dimensional load-bearing porous scaffold having interconnected networks of pores, thereby enabling tissue infiltration and allowing native tissue, blood vessels, and cells to colonize on the scaffold. In some embodiments, the scaffold may be formed from a biodegradable material such that it may degrade during the tissue infiltration process, leaving native tissue. In some embodiments, the stent may be formed from a triple periodic minimum surface, such as a helical tetracosahedron, to achieve high compressibility and high porosity. The compressibility of the implant may simulate the mechanical behavior of native tissue and allow the implant to be delivered through a small incision site (e.g., with an implant delivery funnel).

The invention discloses a precise adjustable electrospray thruster device which is characterized in that an emitter mounting bracket is used for fixing a porous ceramic emitter, and the fixed porous ceramic emitter can move along with the mounting bracket; the special-shaped groove in the mounting bracket is used for quickly positioning the mounting bracket; the fine adjustment of the relative position between the porous ceramic emitting electrode and the extraction electrode can be realized by adjusting a spring jackscrew in a horizontal plane and a fastening screw in a vertical plane; the fine adjustment process can be operated under a microscope to improve the adjustment precision; the shell of the electrospray thruster is designed to be of a spiral twenty-four-face structure and is machined and formed through the 3D printing technology, and the weight of shell parts is further reduced by designing a hollow cavity in the shell.

Compositions containing a nucleic acid nanostructure having a desired geometric shape and immunostimulatory agent(s) bound to its surface are provided. The nanostructures can be, for example, in the form of a 6-helix bundle, or icosahedron, or a pentagonal bipyramid. The nanostructure design allows for control of the relative position and / or stoichiometry of the immunostimulatory agent(s) bound to its surface. The immunostimulatory agent(s) displayed on the nanostructure surface are arranged with the preferred number, spacing, and 3D organization to elicit a robust immune response. The displayed antigen can be a TLR agonist, such as a TLR9 agonist. The immunostimulatory compositions may thus be useful as immunogens, vaccines, adjuvants, and the like. Methods of inducing immune responses, and for targeted induction of TLR activation are also provided.

Apparatus, systems and methods are provided for a solar heater water purification system. The water purification system includes an icosahedron dome that houses a plurality of Fresnel lenses aligned with multiple facets of the icosahedron dome, wherein the concentrator lenses concentrate light at the base of the dome throughout the day without the need for a mechanical tracker. The water purification system also includes a water transportation system, located at the base of the dome-shaped structure, comprising a spiral-shaped coil of metal tubes which receives dirty water and exposes a small volume of the water to be heated by the concentrated light at the base of the icosahedron dome. The water purification system is under control of a smart controller with a temperature sensor that causes the water transportation system to output purified water when the water reaches a specified temperature for a specified period of time.

The invention discloses elemental boron B60, a preparation method thereof and a preparation method of Na4B60. The boron elementary substance B60 disclosed by the invention is characterized in that the crystal structure of the boron elementary substance B60 belongs to an Ima space group, a structural framework of each unit cell is formed by four B12 icosahedrons on average, and gaps among the four B12 icosahedrons are filled with the rest 12 B atoms. The invention also relates to a preparation method of the boron simple substance B60, which comprises the step of synthesizing the boron simple substance at 400-1000 DEG C under a vacuum condition by using Na4B60 as a raw material. The invention also relates to a preparation method of the Na4B60, which comprises the step of enabling a boron simple substance, a sodium simple substance and a zinc simple substance to react at the pressure of 0.5 GPa or higher and the temperature of 1000 DEG C or higher to obtain the Na4B60. The method is simple in process, low in cost and suitable for large-scale production. The obtained boron simple substance has the advantages of high purity, narrow optical band gap, high conductivity, high nanoindentation hardness and unique plastic deformation capacity, and has application potential in the fields of electronic devices, high-temperature ceramics and the like.

The application discloses a kind of based on icosahedral quasicrystal dispersion phase regulation 6000 series aluminum alloy homogenization heat treatment process, belongs to aluminum alloy heat treatment technical field.Homogenization heat treatment is low-temperature heat treatment, with 20 ℃ / h~100 ℃ / h heating rate to 350 ℃~450 ℃, the holding time is 1h-6h, then with 20 ℃ / h~40 ℃ / h cooling to 250 ℃~300 ℃ holding time 2-6h, then with 20 ℃ / h~50 ℃ / h heating to 350~400 ℃ holding 1-4h, then air cooling or water cooling forced cooling.The heat treatment process inhibits the conversion of icosahedral quasicrystal structure I-Al (Fe, Mn, Cr) Si dispersion phase to cubic structure alpha-Al (Fe, Mn, Cr) Si dispersion phase, obtains the microstructure of quasicrystal structure I phase as main dispersion phase, stimulates the dispersion strengthening ability of Al-Mg-Si alloy, improves the strength and toughness of alloy.

1. Name of the designed product: toy (icosahedron). 2. Use of the designed product: for toys. 3. Design points of the designed product: in shape. 4. Picture or photo best indicating the design points: perspective view.

The invention relates to the technical field of digital modeling of geotechnical engineering materials, in particular to a rock-soil particle model generation method and system based on multilevel shape parameter control. The method comprises the following steps: setting a multi-level shape parameter according to the shape of a target particle, and generating an initial surface height matrix through Fourier transform based on a fractal parameter; based on the initial surface height matrix, restraining the elongation index of particles and smoothing the matrix boundary to obtain particle individuals; performing mutation operation based on a Gaussian kernel function on a population formed by the particle individuals generation by generation, mapping the mutated particles to an icosahedron grid from a spherical coordinate grid, taking a difference value between a shape parameter and a target value as a fitness value of a genetic algorithm, screening the particles with low fitness generation by generation, and realizing iterative optimization of the particle shape. And finally outputting the target particle file. According to the method, the particles with various shapes can be generated, and the particles are highly matched with real particles in form and texture.

An optical filter may comprise a layer structure comprising a plurality of layers stacked in a thickness direction of the layer structure and including: a plurality of nano-photonic layers formed of a nano-photonic material with icosahedral or dodecahedral symmetry and at least one substrate layer formed of an optically transparent material, wherein one of the at least one substrate layer is positioned between two of the plurality nano-photonic layers in the thickness direction of the layer structure.

The application discloses a heat-resistant aluminum alloy material and a preparation method and application thereof, and belongs to the technical field of additive manufacturing aluminum alloy materials. The heat-resistant aluminum alloy material comprises the following components in percentage by mass: 0.5-6% of Fe, 0.5-6% of Cr, 0.5-3% of Ti, ≤2% but not 0 of Mn, ≤2% but not 0 of Sc, ≤2% but not 0 of Zr, the balance of Al and inevitable impurities. By optimizing the component ratio, the preparation method and the like, the heat-resistant aluminum alloy material has a bimodal grain structure in the microstructure, the molten pool boundary is mainly equiaxed crystal, the molten pool center is columnar crystal, and the molten pool boundary and the molten pool center are also dispersedly distributed with icosahedral nanometer quasi-crystal phase and intermetallic compound strengthening phase; and the heat-resistant aluminum alloy material fundamentally solves the problems of thermal cracks or macroscopic cracks and poor mechanical properties of a formed product when a traditional aluminum alloy material is used for additive manufacturing.

The present invention belongs to the field of metallic glass and provides a method for regulating the performance and thermal stability of CuZrAl metallic glass by melt phase transition, comprising: taking each metal element according to the composition ratio of CuZrAl metallic glass, placing it in an induction melting chamber, ‑5 Pa~10 ‑4 Pa, and repeatedly smelting for 5 to 10 times under the protection of an inert atmosphere to obtain a CuZrAl alloy; ‑6 Pa~10 ‑5 Pa, inert atmosphere protection, heated to a temperature above the melting point, quenching temperature T q Cu is heated to 1473K~1573K 46 Zr 46 The Al8 melt was cooled at a rate of 10 4 K / s freezes into a metallic glass solid, which is obtained. LLST will cause more and more dispersed icosahedral atomic clusters in its structure, thereby improving the glass forming ability and thermal stability; before and after the occurrence of LLST in high-temperature melts, the structural origin that determines the mechanical properties changes, resulting in the hardness and elastic modulus of metallic glass changing with the quenching temperature T q The decrease shows a two-stage change with the LLST occurrence temperature as the turning point, first decreasing and then increasing.

Conventional pen holders had two problems: when adjusting the angle of the holder, all pens were held at the same angle, and because the opening was only on the top, it was inconvenient to find multiple writing instruments at a glance. [Solution] The pen holder is a tensegrity icosahedron composed of six rod-shaped members, each having a locking part near both ends, and 24 linear members that are attached to two locking parts on each of the six rod-shaped members, thereby connecting the six rod-shaped members without them touching each other and forming a three-dimensional shape. The bottom of the tensegrity icosahedron is formed by three of the linear members that are locked to three of the locking parts closest to the installation surface when the tensegrity icosahedron is placed on the installation surface, and a bottom plate is provided above the three linear members of the bottom.

The present invention discloses a multi-level airspace planning method based on a spherical diamond discrete grid, comprising the following steps: Step 1: In an airspace management system, based on a spherical latitude and longitude coordinate system and incorporating a regular icosahedral spherical diamond discrete grid, convert airspace coordinate information from an isotropic coordinate system to a spherical rectangular coordinate system; Step 2: Subdividing the regular icosahedral diamond grid; Step 3: Establishing an airspace coordinate global coding system to perform global positioning coding on airspace coordinate points, thereby completing multi-level airspace planning based on the spherical diamond discrete grid; Step 4: In the airspace management system, aircraft within the managed airspace are managed based on the global positioning coding described in Step 3. This method effectively addresses the problem of inconsistent area representation in the grid representation of airspace models, which in turn leads to inconsistent flight intervals and ultimately affects flight safety.

This invention discloses a naked-eye 3D immersive interaction method and system applied to giant spherical buildings, belonging to the field of naked-eye 3D interaction technology. This invention collects the geometric parameters of the giant spherical building and the distribution parameters of the display array, constructs a mapping between spherical partitions and viewing areas using icosahedral subdivision, and achieves multi-source collaborative positioning and error compensation by combining ultra-wideband and inertial measurement units. Based on the user's position, line of sight, and virtual object depth, it generates parallax-adapted images, optimizes the interaction response through motion prediction and pre-rendering, and simultaneously completes positioning accuracy and latency evaluation. This effectively solves the problems of inaccurate positioning, poor parallax adaptation, and high response latency in naked-eye 3D interaction within giant spherical buildings, significantly improving positioning accuracy, parallax adaptation precision, interaction response speed, and user immersive experience.

1. Name of the design product: Container bottle (icosahedron bottle). 2. Use of the design product: A container for holding alcoholic beverages, drinks, or daily chemical products. 3. Design key points of the design product: Lies in the shape. 4. Picture or photograph that best shows the design key points: Perspective view 2.

The present invention discloses a virtual reality user security authentication method, system and medium based on spatial interaction. The method comprises: accepting a user's identity authentication request, outputting a function selection interface for password setting and identity authentication in the VR system; if a password is set, a password string is inputted using a stereo interactive model in the VR system; if identity authentication is performed, a password string is inputted using a stereo interactive model identical to the password setting interface; after completing the password input, a comparison of the set password is performed to complete the identity authentication. The present invention innovatively designs a new interactive three-dimensional input layout model using a regular icosahedron that is similar to a sphere. The model can be manipulated to perform directional rotation through interactive operations, and the main operation surface of the model can be seamlessly switched. It has strong operability, increases the key space compared to traditional password authentication, improves the security of password authentication, and increases the difficulty for attackers to crack.

The application belongs to the technical field of vibration reduction, and discloses a compact superstructure for broadband vibration reduction of a pipeline and a design method thereof. The compact superstructure is used for vibration reduction of a pipeline body and comprises a superstructure unit cell. The superstructure unit cell is installed on the outer wall of the pipeline body. The superstructure unit cell is composed of 12 mass units and 30 connecting rods. Each mass unit is connected with 5 connecting rods and forms a icosahedron structure. The mass unit comprises a mass ball and an outer wrapping layer wrapped on the outer wall of the mass ball. The application has the beneficial effect that multi-directional and multi-frequency local resonance is realized through the spatial spring design of the superstructure unit cell and the spatial array distribution of the oscillators, and then multiple vibration reduction bands can be generated in multiple directions of the pipeline, so that broadband vibration reduction design of the pipeline under the condition of limited space is realized.

The invention belongs to the field of metal materials and preparation thereof, and particularly relates to an endogenous toughness phase Zr-based amorphous composite material with high yield strength and tensile plasticity and a preparation method thereof. The atomic percent expression of the amorphous composite material is ZraMbCucNidAle, M is at least one of Nb, Ta or Ti, and all the components meet the following ranges: 60 < = a < = 80, 5 < = b < = 12, 2 < = c < = 14, 1 < = d < = 12, 4 < = e < = 8, and a + b + c + d + e = 100; comprising an endogenous dendritic crystal phase and an amorphous matrix phase, the endogenous dendritic crystal phase is a solid solution phase of a body-centered cubic structure, and the amorphous matrix phase is rich in icosahedron short-range ordered structures. Compared with a traditional metal material, the material has the characteristics of high yield strength, obviously improved tensile plasticity and the like, the problems of shearing localization, room-temperature brittleness and the like of a traditional amorphous alloy are solved, and the limitation that a traditional endogenous dendritic phase amorphous composite material contains high beryllium content is overcome.

An optical filter may include a layer structure comprising a plurality of layers stacked in a thickness direction of the layer structure and including: a plurality of nano-photonic layers formed of a nano-photonic material with icosahedral or dodecahedral symmetry, and at least one substrate layer formed of an optically transparent material, wherein one of the at least one substrate layer is positioned between two of the plurality nano-photonic layers in the thickness direction of the layer structure.