19 results about "Dodecahedron" patented technology

A logic cube with changeable tiles is presented. The tiles which can be fit on the logic cube, have indicia in well-defined positions and orientations such that the resulting solid is an exact but larger replica of the initial logic cube. The tiles are such that they can be easily fit or removed, and do not fall off with the movement of the logic cube. They also do not obstruct the functionality of the logic cube. Other geometric shapes such as tetrahedron and dodecahedron and sizes other than 3×3×3 may be used.

This invention discloses a dodecahedral Co-C / LDH composite electrode material loaded with bismuth nanoparticles, its preparation method, and its application. The composite material has a dodecahedron formed by a Co-C amorphous carbon layer as the core, an outer NiCoAl-LDH layer, and a surface loaded with Bi nanoparticles, forming a unique three-dimensional core-shell structure. Co-C / NiCoAl-LDH@Bi is assembled as the anode and AC as the cathode. The Co-C / NiCoAl-LDH@Bi / / AC device improves the Cl... ‑ Storage capacity, electrochemical reaction kinetics, and long-term cycling stability expand the application boundaries of LDH materials in the field of high-performance CDI anodes, providing high-performance material support for the practical application of CDI technology in seawater desalination. It is expected to promote the development and implementation of low-cost, large-scale seawater desalination systems and has important industrial application prospects and environmental value.

In percussion instruments, this makes it possible to generate a wider variety of sounds during performance. [Solution] The percussion instrument 10 has 12 plate-like members 110[1]~110[10], 120, 130, each with a regular pentagonal shape, which are assembled at positions corresponding to each face of a regular dodecahedron. Of the 12 plate-like members 110[1]~110[10], 120, 130 that make up the percussion instrument 10, at least one plate-like member 130 is provided with an opening that penetrates in the thickness direction.

1.1 is an exploded perspective view. 1.2 is another exploded perspective view. 1.3 is an exploded top view. 1.4 is an exploded front view. 1.5 is an exploded left side view. 1.6 is a perspective view of the completed puzzle. 1.7 is another perspective view of it. 1.8 is its top view. 1.9 is its front view. 1.10 is its left side view. 1.11 is a perspective view of a puzzle piece. 1.12 is another perspective view of it. 1.13 is its top view. 1.14 is its bottom view. 1.15 is its left side view. 1.16 is its right side view. 1.17 is its front view. 1.18 is its rear view. As shown in Figures 1.1-1.10, when the puzzle pieces are arranged correctly, they connect with magnets and form a hollow dodecahedron. The distinctive feature of this design lies in the shape of the puzzle game and puzzle pieces, as shown in the figures. Other diagrams of the puzzle shown in Figures 1.3-1.5 and 1.8-1.10 are omitted because they are identical or symmetrical to those in Figures 1.3-1.5 and 1.8-1.10. As shown in Figures 1.11-1.18, the puzzle consists of 12 identical pieces. Therefore, diagrams of individual pieces are omitted. The dashed lines in the diagrams indicate areas of the puzzle game and puzzle pieces that do not constitute part of the design for which registration is sought. 1.1) Exploded perspective view; 1.2) Exploded perspective view; 1.3) Exploded view; 1.4) Exploded view; 1.5) Exploded view; 1.6) Perspective view; 1.7) Perspective view; 1.8) Top view; 1.9) Front view; 1.10) Left side view; 1.11) Perspective view; 1.12) Perspective view; 1.13) Top view; 1.14) Bottom view; 1.15) Left side view; 1.16) Right side view; 1.17) Front view; 1.18) Rear view

This invention relates to the field of pressure testing technology and discloses an omnidirectional pressure measurement system and method. The omnidirectional pressure measurement system includes a spherical piezoelectric sensor array module, a signal conditioning module, a signal storage and transmission module, and a host computer. The spherical piezoelectric sensor array module collects pressure signals in space, processes them through the signal conditioning module, and transmits them to the host computer via the storage and transmission module. The host computer calculates the pressure field intensity and pressure source location at each point and reconstructs the pressure field using the data. This invention employs a spherical array design with a dodecahedral vertex topology, enabling the system to achieve multi-angle information acquisition and depth perception, eliminating detection blind spots. This invention constructs a weighting function in a spherical coordinate system, calculates the pressure intensity at each point in space using a weighted average, estimates the initial position of the pressure source by squaring the measured value, and combines iterative algorithms for precise positioning. This invention not only improves measurement accuracy and efficiency but also enables the reconstruction of dynamic pressure fields.

The utility model discloses a wooden assembled wisdom toy, including wooden main part, card block and fixed component, the wooden main part is dodecahedron, and every surface of the wooden main part is all seted up recess, card block with recess is matched, and the side of card block is equipped with chamfer, and fixed component is installed in one side of card block, and the card of card block fixed is set in the inside of recess, the utility model discloses through the additional wooden main part, card block and fixed component, can realize the dismounting between card block and wooden main part, and increase the stability that card block assembled placed, and the toy can exercise the dexterity, observation and the cognitive ability to shape of children when playing, and exercise the carefulness and patience of children in the process of playing, can effectively improve the fun of children playing.

The invention discloses a ZIF-67 derivative hollow material and a room-temperature boronizing and vulcanizing two-step preparation method thereof. The preparation method comprises the following steps: firstly, synthesizing rhombic dodecahedron ZIF-67 by adopting a room temperature precipitation method, and then in-situ growing CoNi-LDH nanosheets on the surface of the rhombic dodecahedron ZIF-67 by introducing Ni < 2 + > to form a core-shell structure precursor; then boronizing treatment and sulfidizing treatment are sequentially carried out at the room temperature, wherein the boronizing treatment realizes partial selective etching of the material, and a core-shell / hollow coexisting structure is formed; and the sulfuration treatment further completes structure transformation and surface refinement, and finally a complete hollow structure with an ultrafine nanosheet surface is obtained. According to the application of the material as a supercapacitor electrode material, the material is charged and discharged within the range of 0-0.5 V, and when the discharge current density is 1 A g <-1 >, the specific capacitance is 1550-1620 F g <-1 >; and compared with 1 A g <-1 >, the specific capacitance retention rate is 70-80% under the current density of 10 A g <-1 >.

This invention discloses a method for preparing and applying a hyperelastic metallic metamaterial. The preparation method includes: selecting a bending metamaterial based on the Maxwell equation, which is: m = b - 3j + 6, where b and j are the number of rods and nodes, respectively, and the material is a bending metamaterial when m is less than 0; selecting a matrix material and preparing the hyperelastic metallic metamaterial using laser powder bed melting 3D printing. In particular, the bending metamaterial can be selected from body-centered cubic metamaterials, face-centered cubic metamaterials, or orthogonal dodecahedral metamaterials. The elastic strain of the hyperelastic metallic metamaterial in this invention is about 10 times that of existing commercial metallic materials, an improvement of nearly an order of magnitude, and has important application value in the field of engineering materials such as artificial bone energy absorbers in medical devices.

The invention relates to the technical field of carbon dioxide absorption fillers, in particular to a diamond-arranged novel filler for improving mass transfer of an absorption tower, the diamond-arranged novel filler comprises a plurality of filler units, each filler unit is arranged to be a hollow prismatic dodecahedron, and each surface of each filler unit is provided with a hexagonal microgroove; the filler units are arranged side by side to form a filler layer, the filler layer is provided with a plurality of layers of diamond-arranged filler bodies, and the plurality of filler layers are arranged in a staggered and stacked manner. By changing the filler structure, a stable three-dimensional structure is formed, and the mass transfer efficiency is improved; when a gas phase and a liquid phase flow through the diamond arrangement filler body, local vortexes are generated at the corner angles of each filler unit, and interface updating can be enhanced.

1. Name of the designed product: dice (regular dodecahedron). 2. Use of the designed product: dice for games. 3. Design points of the designed product: combination of shape and pattern. 4. Picture or photo best indicating the design points: design 1 perspective view. 5. Design 1 is designated as the basic design.

The invention discloses a regular dodecahedron deployable enveloping mechanism based on a seven-rod single-ring mechanism, which belongs to the technical field of mechanism application and comprises a type I rack, a type II rack, a type I connecting rod, a type II connecting rod, a type III connecting rod, a type I bias connecting rod, a type II bias connecting rod, a type III bias connecting rod and a type IV bias connecting rod. Each branch chain of the deployable mechanism comprises three seven-rod single-ring mechanisms, the single-ring mechanisms are connected through I-type offset rods, II-type offset rods and III-type offset rods, and the corresponding seven-rod single-ring rod pieces have the same motion relation. The extensible mechanism can be driven through the rack rod, conversion between a completely-unfolded state and a completely-closed state is achieved, and control is convenient.

The invention belongs to the technical field of electrocatalytic oxygen reduction reaction, and particularly relates to a pyridine nitrogen-doped regular dodecahedron supported transition metal catalyst as well as a preparation method and application thereof. Soluble transition metal salt and an organic ligand are used as raw materials and are mixed and coordinated in a solvent system to obtain a pyridine nitrogen-doped N-C skeleton precursor; and calcining in a nitrogen atmosphere to obtain the pyridine nitrogen doped regular dodecahedron loaded transition metal catalyst. The oxygen reduction performance of the transition metal catalyst is improved by increasing the content of pyridine nitrogen, metal agglomeration is effectively prevented, meanwhile, pyridine nitrogen can effectively adjust the electron cloud density of center metal, adsorption of an active center to O2 is improved, and then the intrinsic activity of an electrocatalytic oxygen reduction reaction is improved. The preparation method is simple, the raw material source is wide, the preparation cost is low, the catalyst activity is high, the performance is only attenuated by 4.1% when the stability CA of the oxygen reduction reaction is tested for 40 hours, and the activity is still maintained by 95.9%.

The invention discloses a modulus-controllable bionic gradient porous medical titanium alloy and an additive manufacturing process method thereof, and relates to the technical field of medical materials.The titanium alloy is formed by stacking a plurality of rhombic dodecahedron structures in the vertical direction; the rhombic dodecahedron structure is formed by stacking a plurality of rhombic dodecahedron structure layers with the same area, and each rhombic dodecahedron structure layer is formed by arranging a plurality of rhombic dodecahedron unit cell structures in an array mode in the same horizontal plane. And the top distances of the rhombic dodecahedron unit cell structures in the rhombic dodecahedron structures from top to bottom are sequentially increased. The elastic modulus can be effectively reduced to 0.14-0.43 GPa, the elastic modulus of the whole structure can be accurately controlled, and the stress shielding effect of the bone graft is relieved.

The application discloses a machining process of a dodecahedron head bolt, which comprises five core steps of blank pretreatment and copper plating lubrication, high-frequency induction rapid heating, rapid hot upsetting forming and quenching, direct aging heat treatment and thread warm rolling machining in sequence, and is particularly suitable for preparation of a GH6159 high-temperature alloy dodecahedron head bolt. The application solves the problem of adhesion of a hot upsetting die through copper plating lubrication, adopts a high-frequency induction 6-7s rapid heating + ≤4s extremely rapid hot upsetting + normal temperature water cooling quenching process to inhibit grain coarsening, and stably controls the grain size at 5-6 levels. The traditional solid solution + aging process is abandoned, and a 660 DEG C + or - 5 DEG C * 20h direct aging treatment is adopted, so that the tensile strength of the bolt breaks through 1800MPa. The 600 DEG C-610 DEG C preheating stable rolling + rolling oil cooling process fundamentally solves the problems of thread folding and broken tooth. The process has strong coherence and high operability, the prepared bolt meets the use requirements of aerospace and high-end equipment under high-temperature severe working conditions, and is suitable for industrialized batch production.

A method for preparing self-assembled spherical superlattice microcavity from synthetic rhombic dodecahedron nanocrystals, the method comprises the following steps: prolonging annealing time through hot injection method to obtain rhombic dodecahedron CsPbBr3 nanocrystals with good monodispersity, dispersing the nanocrystals in toluene solution after centrifugal separation and purification, dropping appropriate diluted nanocrystal solution on a substrate, slowly evaporating at low temperature, and self-assembling the rhombic dodecahedron nanocrystals in the solution into superlattice with regular morphology structure under the interaction between ligands and ligands and between solvent and ligands. The size of the self-assembled superlattice structure is approximately several hundred nanometers to several microns. The regular rhombic dodecahedron nanocrystals have good application prospect in the field of photocatalysis and display due to their weak size limitation effect and multi-faceted nature; meanwhile, the spherical superlattice has a high packing factor due to the close packing of its structure, and can form a microcavity as an optical feedback surface in combination with the regular geometric morphology of the self-assembled superlattice structure.

The disclosure provides a preparation method of an Fe-N-C cathode oxygen reduction catalyst based on Fe supermolecule, comprising: performing first pyrolysis on ZIF-8 in a protective atmosphere to obtain a carbon-nitrogen base, wherein the carbon-nitrogen base has a positive dodecahedron framework structure; under the condition of stirring, adding a mixed solution to a melamine solution to obtain an iron supermolecule precursor, the mixed solution comprising cyanuric acid, iron ions and oxalate ions; ultrasonic dispersing the iron supermolecule precursor and the carbon-nitrogen base in water to obtain a catalyst precursor, and performing second pyrolysis on the catalyst precursor to obtain the Fe-N-C cathode oxygen reduction catalyst. The disclosure further provides the Fe-N-C cathode oxygen reduction catalyst obtained based on the foregoing preparation method and application thereof.

The invention discloses a method for reducing magnetic anisotropy of a garnet film, and belongs to the technical field of liquid phase epitaxial single crystal preparation. Pr ions are doped as light rare earth ions, and 4f electron cloud spatial distribution of the Pr ions is remarkably different from that of main group ions Bi < + >. When Pr < + > partially substitutes Tb < 3 + > on dodecahedron, the magnetocrystalline anisotropy constant introduced by Pr < + > is small, and symbols may be different. The substitution directly dilutes and counteracts a strong anisotropy field brought by original ions, and the net magnetocrystalline anisotropy constant is reduced from the physical source. Ga ions are doped, and Fe < + > on a tetrahedron can be preferentially replaced due to nonmagnetism of the Ga ions; the replacement directly dilutes and weakens the key Fe < + >-O-Fe < + > super-exchange effect, so that the saturation magnetization of the material is remarkably reduced.

This invention discloses an environmentally friendly nanopesticide particle, its preparation method, and its application. The nanopesticide particle is a nanopesticide particle loaded with fluopyram, with a dodecahedral-like structure. The inner layer is a zinc metal-organic framework (ZIF-8), and the outermost layer is a polydopamine membrane (PDA). Fluopyram is not only loaded in the ZIF-8 channels but also present on the PDA membrane, with a particle size of 500-700 nm. The environmentally friendly nanopesticide particle of this invention can be used to prepare environmentally friendly nanopesticide formulations, reducing pesticide dosage, effectively controlling plant fungal diseases, while minimizing harm to non-target organisms (such as fish), thus mitigating the damage to the ecological environment caused by traditional pesticides. This provides technical support for the development of efficient, specific, and environmentally friendly nanopesticides that protect the ecological environment.

The application provides a Fe-S-N-C cathode oxygen reduction catalyst doped with sulfur and a preparation method and application thereof, and belongs to the field of catalysts and preparation technologies thereof. The preparation method comprises the following steps: mixing and pyrolyzing ZIF-8 with a framework structure of a regular dodecahedron and a nitrogen-containing ligand to form a nitrogen-coated nitrogen-carbon base, wherein the nitrogen-carbon base has a framework structure of a regular dodecahedron; and performing chemical vapor deposition on the precursor iron salt, the precursor sulfur salt and the nitrogen-coated nitrogen-carbon base to obtain the Fe-S-N-C cathode oxygen reduction catalyst doped with sulfur. The application reduces the electrons around the Fe active center, improves the interaction with oxygen compounds, promotes the four-electron transfer oxygen reduction process in subsequent application, reduces the dissolution of Fe, and improves the cycle stability of the catalyst.