41 results about "Bipyramid" patented technology

The invention relates to a precious-metal nanometer bipyramid and a preparing method thereof. The method includes the steps that an Au decanedron nano-particle protected with poly diallyldimethylammonium chloride serves as a seed, and Pd grows on the surface of the Au decanedron nano-particle in the [110] direction into the bipyramid. When prepared with the method, the Au and Pd nanometer bipyramid controllable in size and uniform in shape can be prepared. According to the Au and Pd nanometer bipyramid prepared with the method, high reproducibility is achieved, and convenience is brought to mass production; high water solubility is achieved, and a biological application in the future is facilitated; in addition, the Au and Pd nanometer bipyramid prepared with the method has a high-index crystal face, is good in catalysis activity and is potential formic acid fuel cell anode catalysts. The method is simple in preparing technology and low in cost and device requirement, and has the good industrial application prospects.

An electrolytic capacitor that contains an anodically oxidized anode that is incorporated with an additional metallic element is provided. More specifically, the metallic element is built into the valve metal pentoxide of the dielectric layer. In one particular embodiment, the addition of the metallic element results in a niobium pentoxide dielectric that contains closely packed units of O atoms, Nb₆ octahedral, and metal atoms (“A”) that serve as counter cations. The use of relatively small electropositive metal atoms (A″) helps fill the tetrahedral (e.g., Al, Si, Ti, Mg, or Mn), octahedral (e.g., Nb, V, Mg, or Mn) and trigonal bipyramid (e.g., V, Nb) interstices of the crystals. The stability of capacitor leakage current may be improved by variation in this crystal structure.

The invention relates to a method for assembling metal nanometer clusters to be of a lamellar structure or a structure similar to a bipyramid in high boiling point solvents, and belongs to the technical field of metal nanometer cluster assembly. The metal nanometer clusters which are prepared in advance and have stable alkyl hydrosulfide ligand are placed in two high boiling point solvents, and through simple heating processing, the assembly of the two-dimension lamellar structure or the structure similar to the bipyramid is achieved. In the micro field, the assembly method is of great value to the development of the assembly technology and research on small-size nanometer cluster interfaces. In the assembly process, the method is convenient to operate and small in dangerousness and has good experimental repeatability.

The invention discloses a preparing method for gold nanometer bipyramids. The preparing method includes the steps that a CTAB water solution, an HAuC14 water solution, an H2PtC16 water solution and a newly-mixed NaBH4 ice water solution are contained in a container for preparing seeds; and then another container is taken, the CTAB water solution, the HAuC14 water solution, the H2PtC16 water solution, an AgNO3 water solution and an HCI solution are sequentially added, an ascorbic acid water solution is added under the stirring condition, the above seed solution is immediately added to mixed solution after the mixed solution is changed to be colorless, and the obtained solution is put in a thermostatic chamber at the temperature of 35 DEG C for carrying out a reaction. The preparing method is simple in operation, the needed synthesis temperature is low and can be changed along with the adding amount of NaBH4 or the amount of the seeds, and in addition, the gold nanometer bipyramids have a narrow half-peak breadth and are more sensitive to responses to environment changes.

The invention discloses a method for rapidly producing a surface enhanced Raman active substrate. The Au NBPs-AAO surface enhanced Raman active substrate is constructed by self-assembling a gold nano-bipyramid used as a precious metal nanoparticle in the nano-pores of porous anodised aluminum oxide (AAO) used as a template. The method allows the surface enhanced Raman active substrate to be produced within 10 s, and the detection of rhodamine 6G by using the surface enhanced Raman active substrate produced through method can be completed within 10 s with handheld Raman as a detection tool.

The invention relates to a mobile and symmetrical coupling mechanism with single-degree-of-freedom for a pentagonal bipyramid. The pentagonal bipyramid is a spatial half regular polyhedron constituted by ten identical regular triangle surfaces and has five vertexes. The mechanism comprises a rack, a mobile platform, and five branches and five coupling rod sets which are used for connecting the rack with the mobile platform. The five coupling rod sets comprise a first coupling rod set, a second coupling rod set, a third coupling rod set, a fourth coupling rod set and a fifth coupling rod set. Each coupling rod set is connected to two of branches; the five branches and the five coupling rod sets are connected at intervals to form a net-shaped coupling structure; and five square components which are connected to the coupling rod sets in each branch are all defined as node components. The mechanism has the characteristic of being big in rigidity, high in bearing capacity, smooth in movement, simple in structure, and convenient to assemble and maintain, and provides patent information and technical support for domestic enterprises and research institutes.

The invention discloses a bipyramid rotary superconducting waste cracking furnace which is composed of a bipyramid superconducting isothermal rotary furnace body, a rotary furnace body driver, a heater and a feeding machine. The bipyramid rotary superconducting waste cracking furnace is characterized in that the bipyramid superconducting isothermal rotary furnace body is a bipyramid composite pipeisothermal superconducting rotary furnace body with two small ends and a thick middle composed of a metal inner pipe and a metal outer pipe which are concentric, the thick portion in the furnace bodyis a superconducting working medium heating pool, and a circumferential heating zone provided with heat exchange sheets is arranged on the periphery of the heating pool. The heater heats the furnacebody outside the furnace body through self-produced gas of the waste cracking furnace, produced radiant heat is rapidly and evenly transferred to waste in the rotary furnace through the circumferential heating zone, the heating pool and the bipyramid composite pipe isothermal superconducting rotary furnace body, and therefore the waste is rapidly and efficiently cracked and gasified. By means of the cracking furnace, the risk that bonding, bulging, blocking and coking are caused by local overheating of waste in the furnace is avoided, flue gas is prevented from being produced, pollution of harmful substances released by cracked materials to environment is avoided, dioxin emission is effectively restrained, and environment is protected; and cracked solid waste can be used as activated carbon for preparing chemical raw materials, and the overall economic benefits are obvious.

The invention discloses a gold nano bipyramid with a five-fold twin structure and a preparation method thereof. A gold nano decahedron is prepared in ethylene glycol by adopting a polyol reduction method; hydroquinone, chloroauric acid and the gold nano decahedron are mixed together so that the concentration of hydroquinone in the mixed solution is 0.001-0.004 mol/L, the concentration of chloroauric acid is 0.0005-0.002 mol/L, and the concentration of the gold nano decahedron is 0.0001-0.005 mol/L; and reacting is then carried out at 30-70 DEG C for 10 hours, and then solid-liquid separation is carried out to obtain the gold nano bipyramid with the five-fold twin structure. The gold nano bipyramid has good near-infrared light absorption performance and high catalytic activity of the twin structure, and has simple preparation process, low cost and environmental friendliness; and the gold nano bipyramid has important application value and wide application prospect in the fields of infrared imaging, photothermal therapy, catalysis and the like.

The invention discloses an asymmetric bipyramid mixer for quantitative liquid spray. The mixer comprises a barrel (1), a main rotary shaft (2) connected with the barrel, and a power device (3) for driving the main rotary shaft (2) to rotate. The main rotary shaft (2) is fixedly provided with a liquid medicine pipe (4) on the section in the barrel, the liquid medicine pipe is provided with a nozzle (5), and the main rotary shaft (2) is provided with an inner cavity (6) communicated with the liquid medicine pipe. For the asymmetric bipyramid mixer for quantitative liquid spray, no blind angle is left by the rotation of the whole barrel on the one hand, and on the other hand, the asymmetric design at the two ends of the barrel enables the granules in the whole barrel to be always in a flow condition and fully mixed in a full range.

The invention relates to a method of producing vaterite-type calcium carbonate nano-particles through ultrasonic assistance. Ethylene glycol butyl ether is used as a crystal form controlling agent and a morphology control agent. An interface reaction, through collision between organic-phase and water-phase liquid drops, of reactants is initiated through ultrasound wave, thereby producing stable vaterite-phase trigonal bipyramid-shaped calcium carbonate nano-particles which has the surface (100), particle size being about 200-300 nm.

The invention discloses a hypersonic-speed double-cone waverider-like gliding aircraft and an aerodynamic configuration design method. The aerodynamic configuration comprises double-cone upper and lower surfaces, a double-cone profile, fillet transition between an upper body and a lower body and arrangement of a control rudder. The upper surface molded line and the lower surface molded line of the bipyramid are superposition of a CST curve and an exponential function, the contour line of the bipyramid is the exponential function, a fillet curve between the upper surface molded line and the lower surface molded line is transformation of a standard equation of a circle, and the control plane molded line is superposition of the CST curve, the standard equation of the circle and a linear function. The aerodynamic configuration obtained through adoption of the design method has typical characteristics of aerodynamic layout of a real aircraft and is suitable for flying in a near space with a high Mach number, the control rudder can be contracted in the double cones and popped out when needed, and the stability under high-altitude extremely-high-speed flying is improved. The whole aerodynamic configuration can be completely analyzed and described by a mathematical expression, the shape of the aircraft can be conveniently and quickly changed according to design requirements, and the iteration requirement of the optimization design of the aircraft on the aerodynamic configuration is met.

The invention discloses a control method for gold atom deposition on a silver nanostructure. The control method for gold atom deposition on the silver nanostructure comprises the following steps of S1, taking a gold nano bipyramid as a core, epitaxially growing silver to prepare a silver nanorod, and distributing a high surface energy surface and a tip position in an ectopic mode; S2, dispersing the silver nanorod serving as a reaction template into a hexadecyl trimethyl ammonium bromide solution, adding an ascorbic acid solution, and uniformly stirring; S3, adjusting the pH value of the mixed solution so as to adjust the reducibility of the ascorbic acid solution and to achieve the adjustment of the ratio between the replacement reaction and the co-reduction reaction in a reaction system; and S4, dropwise adding a gold precursor solution into the obtained reaction system, wherein the reaction system is converted into a co-reduction reaction system from a replacement reaction system, and the deposition position of reduced gold atoms is gradually migrated to the tip of the silver nanorod from the high surface energy face. According to the control method for gold atom deposition on the silver nanostructure, controllable deposition of the gold atoms can be achieved by adjusting the pH value of the reaction system, the conditions are simple and mild, and operability is high.

The invention discloses a method for detecting the wall thickness and the wall thickness difference of a bipyramid. The method comprises the following steps: S1, installing a measured piece; wherein alarge cone outer measuring rod and a large cone inner measuring rod of a large cone measuring assembly are arranged on the outer side and the inner side of the large cone surface of a bipyramid workpiece respectively; a small cone outer measuring rod and a small cone inner measuring rod of a small cone measuring assembly are arranged on the outer side and the inner side of the small cone surfaceof the bipyramid workpiece respectively; S2, setting parameters before measurement; S3, measuring the bipyramid workpiece: wherein the wall thickness data of the bipyramid workpiece at each measuringpoint is measured; and S4, processing and evaluating the obtained axial wall thickness and circumferential wall thickness data. The bipyramid wall thickness detection device can perform automatic detection, automatic data reading, automatic analysis, processing and evaluation, mistake-proofing protection, automatic storage and output on the wall thickness of the bipyramid, reduces the influence ofhuman factors on a measurement structure, greatly improves the measurement precision, is high in automation degree, and improves the detection work efficiency.

The invention provides a solid-liquid mixed waste separating and crushing device. The solid-liquid mixed waste separating and crushing device comprises a screw shaft and a motor. The motor is arrangedon the lower portion of the screw shaft, a screw blade is arranged around the screw shaft, the screw blade is of a bipyramidal structure, and a cutter point is arranged on the screw blade on the pyramidal structure on the upper portion of the bipyramidal structure. According to the solid-liquid mixed waste separating and crushing device, extrude crushing and cut crushing can be combined, big blocks are cut before being extruded, and subsequent extrude crushing is convenient; the extrude crushing efficiency is improved, and the situation that waste is locked between the screw blade in the screw shaft is avoided; connecting is stable and reliable, assembling is convenient, formed solid waste is thorough in moisture removal and consistent in size, the stability of subsequent treatment is guaranteed, and the solid-liquid mixed waste separating and crushing device has wide applicability in the field of waste treatment.

The invention discloses a method for preparing high-purity silicon from silicon carbide sliced crystalline silicon waste mortar and belongs to the technical field of high-purity silicon preparation. The method comprises the following specific steps: 1, smashing a silicon carbide sliced crystalline silicon waste mortar raw material; 2, performing chemical processing and purification; 3, sorting; 4,utilizing a sheet frame to dewater the raw material and a bipyramid vacuum rotary drying machine to dry the raw material; 5, utilizing a pressing and forming machine to press the raw material in to blocks; 6, utilizing one or more combinations of an intermediate frequency furnace, an intermediate frequency electric arc furnace and an electromagnetic induction furnace to melt the raw material; 7,utilizing a breaking machine to smash the raw material; 8, utilizing one or more combinations of sulfuric acid, hydrochloric acid, hydrofluoric acid and nitric acid to perform purification and removeimpurities; 9, utilizing the bipyramid vacuum rotary drying machine to dry the raw material and drying to obtain a high-purity silicon product. The method disclosed by the invention can be used for purifying and recycling silicon powder in a mortar cutting waste material, the silicon powder is applied to a solar-grade silicon industry chain again, and great significance in resource reutilization,cost reduction and environmental protection is achieved.

The invention discloses an application of gold nanometer bipyramids in an OLED device and further relates to a gold nano bipyramidal hybrid OLED device and a preparation method of the device. The method is advantaged in that through utilizing the surface plasmon resonance effect of the gold nanometer bipyramids, excitation and radiation transition of electrons are greatly accelerated, through adjusting the aspect ratio of the gold nanometer bipyramids, a surface plasmon resonance absorption band and absorption and emission spectra of luminescent materials are made to overlap to achieve the purpose of maximizing performance of the OLED device, and the gold nanometer bipyramids can generate a stronger electromagnetic field, the brightness and lumen efficiency of the gold nanometer bipyramidshybrid device are 2.22 times and 1.95 times the brightness and lumen efficiency of an original device, and performance of the OLED device is effectively improved.

The invention relates to a preparation method of a vaterite-type calcium carbonate nano-particle self-assembling membrane. Ethylene glycol butyl ether is used as a crystal form controlling agent and a morphology control agent. An interface reaction, through collision between organic-phase and water-phase liquid drops, of reactants is initiated through ultrasound wave, thereby producing stable vaterite-phase trigonal bipyramid-shaped calcium carbonate nano-particles which have the surface (100), particle size being about 200-300 nm. In addition, the calcium carbonate nano-particles can form an orderly arranged self-assembling colloid membrane in a spinning manner on a glass substrate.

The invention discloses a method for analyzing a growth mechanism of a silver nano structure, which comprises the following steps of: (a) preparing a gold nano bipyramid and a gold nano frame taking the gold nano bipyramid as a center, and respectively taking the gold nano bipyramid and the gold nano frame as length-adjustable hard templates; (b) centrifugally dispersing the hard templates into a hexadecyl trimethyl ammonium chloride solution, measuring absorption peaks of particles, and adjusting the number of the particles of each hard template to be equal according to the intensity of the absorption peaks; (c) adding a silver nitrate solution and an ascorbic acid solution with the same amount, uniformly performing shaking, and performing reacting at 50-70 DEG C to prepare a silver nanorod; and (d) comparing the morphology of the silver nanorod in the step (c), determining the influence of the type of the hard template in the mixed reaction system on the morphology of the silver nanorod, and determining the growth mechanism of the silver nanorod. According to the method, the gold nanostructures similar in morphology are constructed as the template, the deposition mechanism of the template selected from silver atoms and the important influence of the final structure are simply and visually researched and verified, the design thought is simple, the experiment operability is high, and the conditions are mild.

The invention provides a method which is efficient, suitable for large-scale production and used for purifying a conventional low-yield gold nanoparticle bipyramid and preparing a composite nanomaterial of the gold nanoparticle bipyramid. The purity of the obtained gold nanoparticle bipyramid reaches up to 97%. According to the method, quality difference between the gold nanoparticle bipyramid and impurities is increased according to different growth rates of silver on the surfaces of the gold nanoparticle bipyramid and the impurities, so that separation of the gold nanoparticle bipyramid and the impurities is realized with a sedimentation or centrifugation method; then a silver shell layer on the surface of the gold nanoparticle bipyramid is removed with ammonia water and hydrogen peroxide, so that the gold nanoparticle bipyramid with the purity reaching up to 97% and an excellent optical property is obtained; and the gold nanoparticle bipyramid composite nanomaterial cladded with silicon dioxide, titanium dioxide, cerium dioxide and cuprous oxide is further prepared through hydrolysis of ethyl orthosilicate, a soluble titanium source, a soluble titanium source and a soluble copper source respectively.

The invention relates to a static seal device of a bipyramid rotary dryer, belonging to the technical field of pharmaceutical machinery. The static seal device comprises a cone tank body, wherein a vacuum hopper is arranged in the cone tank body; the opening of the vacuum hopper is connected with a first vacuum pipe; the outer end of the first vacuum pipe extends out of the tank body; a fixed gland and a tank body fixing teflon jacket are sleeved on the first vacuum pipe between the vacuum hopper and the tank body; the fixed gland is welded at the periphery of the first vacuum pipe and connected with the tank body fixing teflon jacket through a fixed bolt; one end of the first vacuum pipe which extends out of the tank body is arranged in a connection pipe in a penetrating manner; a seal connection piece is arranged between the first vacuum pipe and the connection pipe, and welded at the periphery of the first vacuum pipe; one end of the connection pipe is connected with a first flange, the other end of the connection pipe is connected with a second vacuum pipe through a mechanical seal; and the first flange is connected with the tank body through screws, and a bearing pedestal and a bracket are sleeved on the connection pipe between the first flange and the mechanical seal. The invention can prevent the generation of secondary pollution on materials, thereby improving the yield of products.

The invention discloses a method for estimating a uniform region of a radiation field of a bipyramid-plane wire grid horizontally polarized antenna. The method comprises the following steps: determining the range of the height h of a uniform region in the bipyramid-plane wire grid antenna; for given h, calculating a polarization component E1 of a radiation field at a position which is just below the center of the double cone and is away from the ground by a height h; setting the maximum attenuation of the amplitudes of the radiation electric fields at all positions in the uniform region relative to the E1 as D dB, calculating the minimum value of the electric field component meeting the amplitude requirement of the uniform region, and recording the minimum value as E2; calculating the distance r2 from a point with the radiation field intensity of E2 under the center of the bipyramid to the center of the bipyramid; calculating the shortest distance dr from the point (0, 0, h) to the polar plate on one side; calculating a reference distance threshold rt; a range of the uniform zone is determined. According to the method, the size of the uniform region of the radiation field of the bipyramid-plane wire grating horizontally-polarized antenna can be rapidly estimated, and reference is provided for research on the electromagnetic environment effect of an electronic system.