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594 results about "Capillarities" patented technology

Solar interface evaporator based on amphoteric polyelectrolyte photo-thermal hydrogel, preparation method and application

The invention provides a solar interface evaporator based on amphoteric polyelectrolyte photo-thermal hydrogel, a preparation method and application, and belongs to the field of solar interface evaporation. The solar interface evaporator with a three-dimensional multi-surface evaporation structure is prepared by combining the polyelectrolyte resisting effect of the amphoteric polyelectrolyte photo-thermal hydrogel and the porous capillary effect of the sponge, and has the characteristics of high light absorptivity, good water absorption effect, excellent antibacterial property, mechanical property, salt resistance, evaporation property and the like; particularly, compared with a traditional hydrogel-based solar interface evaporator, the water delivery capacity and the salt resistance in high-concentration saline water are greatly improved through the application of the autonomously designed zwitterionic hydrogel, water molecules in the saline water are activated through the cooperation of salt-resistant ionized water, the evaporation enthalpy is reduced, and the evaporation efficiency is improved. And a great positive effect is achieved on improvement of the evaporation rate. The evaporator is easy to prepare and excellent in multi-dimensional performance, and a new way and thought are provided for application to seawater desalination and wastewater treatment.
Owner:DALIAN UNIV OF TECH

Supported nickel catalyst for preparing 1, 3-propylene glycol through hydrogenation of 3-hydroxypropionaldehyde as well as preparation method and application of supported nickel catalyst

The invention discloses a supported nickel catalyst for preparing 1, 3-propylene glycol through hydrogenation of 3-hydroxypropionaldehyde as well as a preparation method and application of the supported nickel catalyst, and relates to the technical field of catalysts. The modified long-chain multi-carbon inducer is used, and a special long-chain molecular structure and a branched chain group of the inducer can effectively and selectively adsorb and occupy a micropore impregnation site; the preparation method has the beneficial effects that more active component nickel species are obviously promoted to be dispersed in main reaction confinement spaces such as mesopores and macropores and interact with the carrier to form effective active sites, and active component steeping liquor is inhibited from entering micropore channels due to capillary action; the active site failure caused by agglomeration of nickel species in micropores in the subsequent drying and roasting process of the catalyst precursor is avoided, the efficient and directional reaction is ensured, the generation of by-products is greatly reduced, the pressure is relieved for the subsequent product rectification separation, and the final product purity is improved. The catalyst provided by the invention can still keep an excellent catalytic effect when the air speed of a 3-hydroxypropionaldehyde solution is increased to 6.5 h <-1 >.
Owner:FUHAI (DONGYING) TECHNICAL SERVICES CO LTD

Climate self-adaptive photovoltaic cooling method and system based on interface evaporation

The invention relates to the field of photovoltaic power generation, and particularly discloses a climate self-adaptive photovoltaic cooling method and system based on interface evaporation, and the system comprises a hydrophilic and hydrophobic composite radiation refrigeration film which is used for capturing atmospheric moisture through a radiation refrigeration effect under a low-radiation condition to form a cooling water source; the bionic water conveying structure comprises a modified silicone tube and a juncus roemerianus bundle and is used for conveying the captured water to the high-level water tank through capillary action; according to the invention, by fusing interface evaporation and radiation refrigeration technologies, the system realizes efficient cooling and energy recovery of the photovoltaic module; under the condition of strong irradiation, the gradient wettability interface evaporation layer takes away waste heat of the module through directional water film flow, so that the temperature of the photovoltaic module is reduced, the photoelectric conversion efficiency is improved, and meanwhile, the daily generating capacity is increased; the cooling effect is obviously better than that of a traditional natural convection or phase change material cooling mode, and efficient heat transfer is achieved through phase change latent heat utilization of interface evaporation.
Owner:李玲

Photovoltaic panel passive cooling system capable of automatically absorbing water, evaporating and cooling based on capillary action

The invention discloses a photovoltaic panel passive cooling system capable of automatically absorbing water, evaporating and cooling based on capillary action. The photovoltaic panel passive cooling system comprises a photovoltaic panel, a photovoltaic support, a wicking material, a water supply assembly, a water conveying pipe, a water storage tank and an adjusting and fixing assembly. The photovoltaic panel is fixedly installed through the photovoltaic support, and the installation mode is horizontal, inclined or vertical. The two ends of the water supply assembly are horizontally arranged along the edges of the two sides of the photovoltaic panel. The wicking material is attached to the back surface of the photovoltaic panel, and the lower end of the wicking material extends into the water supply assembly; the water supply assembly is connected with the water storage tank through a water conveying pipe. The adjusting and fixing assembly is connected with the water supply assembly and the photovoltaic panel and used for adjusting the vertical state of the water supply assembly. According to the invention, an energy-saving, water-saving, efficient and reliable photovoltaic panel cooling effect is realized, so that the power generation efficiency of a photovoltaic system is improved and the service life of the photovoltaic system is prolonged.
Owner:HUAQIAO UNIVERSITY

Tunnel base soil body active drainage system device and method based on drainage nails

The invention discloses a tunnel base soil body active drainage system device and method based on drainage nails, and relates to the technical field of tunnel construction. The device comprises capillary adsorption tube wells, side ditches and a pumping drainage device, the capillary adsorption tube wells are arranged on the two sides of the bottom of a tunnel, and the multiple capillary adsorption tube wells are arranged in the longitudinal direction of the tunnel; each capillary adsorption tube well is arranged in the vertical direction and extends into a base soil body below a tunnel bottom, each capillary adsorption tube well comprises a waterproof tube section, a water seepage tube section and a bottom precipitation tube section which are sequentially arranged, and every two adjacent tube sections are connected through a plugging connector. The side ditches are arranged on the two sides of the railway ballast and used for gathering and discharging water in the capillary adsorption tube wells. And the pumping and draining device is used for pumping and draining water in the capillary adsorption tube well into the side ditch. A natural filter layer can be formed under the capillary action of the water seepage pipe section, silt is effectively prevented from inrush, and therefore the method is suitable for long-term water pumping and drainage construction in the heavy haul railway base operation period, and frequent pipe well cleaning does not need to be carried out.
Owner:CENT SOUTH UNIV +1

Cosmetic applicator

A cosmetic applicator capable of stably applying a cosmetic even when the cosmetic contains large particles. A cosmetic applicator includes a barrel, a brush made of bundled fibers and provided in front of the barrel, a cosmetic accommodation portion arranged in a space behind the barrel, a guide that guides a cosmetic from the cosmetic accommodation portion to the brush, a collector that has a comb-shaped outer circumferential surface and that is disposed inside the barrel and at an outer circumferential portion of the guide, and a front barrel supporting the brush at a front portion of the barrel. A capillary force of the guide is 50 to 200 (mm) (as measured using purified water in an environment of 25° C.). (B) / (A) is 0.8 or greater, where (A) (mg) is an amount of cosmetic liquid discharged for 1 (m), and (B) (mg) is an amount of cosmetic liquid discharged for 1 (m) after 30 (m).
Owner:MITSUBISHI PENCIL CO LTD

Membrane transfer and immersion type dual-purpose sizing machine

The invention discloses a film transfer and immersion type dual-purpose sizing machine, and relates to the technical field of sizing machines, the film transfer and immersion type dual-purpose sizing machine comprises a sizing machine shell, an upper sizing roller is arranged at the upper end of the interior of the sizing machine shell, a lower sizing roller is arranged at the lower end of the interior of the sizing machine shell, and sizing beams are arranged at the front end and the rear end of the interior of the sizing machine shell; and a filtering mechanism for treating glue is arranged in the collecting box. According to the membrane transfer and soaking type dual-purpose sizing machine, scraped glue is discharged through a discharging pipe and collected through a collecting box, after glue collection, the glue is filtered through a filter screen and collected to the lower end of the interior of the collecting box, and after the glue is adsorbed through the capillary action of paper, dust on the surface of the paper can be left in the glue; and the glue is filtered through the filter screen, so that the quality of the glue during recycling is guaranteed, and the overall stability during use is improved.
Owner:DONGGUAN JINZHOU PAPER IND

Application container

Even if the cap is removed from the mouth of the container while the internal pressure of the container body has increased, the contents will not spray out through the connecting passage. [Solution] The container comprises a container body 11 for containing the liquid contents, a cylindrical stopper member 12 attached to the mouth 11a of the container body, and an impregnating material 13 attached to the inside of the stopper member and capable of impregnating the liquid contents. The stopper member comprises a containment cylinder 15 for containing the impregnating material with its upper end protruding, and a communication cylinder 16 that connects the inside of the containment cylinder and the inside of the container body. A communication passage 21 is provided between the containment cylinder and the impregnating material, connecting the inside of the communication cylinder and the upper end opening 15b of the containment cylinder. The communication cylinder has a main passage 22 that connects the communication passage and the inside of the container body, and a capillary passage 23 that connects the communication passage and the inside of the container body, and has a smaller flow path cross-sectional area than the main passage, causing capillary action, arranged in parallel.
Owner:YOSHINO KOGYOSHO CO LTD

Boron-containing copper-based three-dimensional metal organic framework material as well as preparation method and application thereof

The invention discloses a boron-containing copper-based three-dimensional metal organic framework material as well as a preparation method and application thereof, and belongs to the technical field of fine chemical engineering. The preparation method comprises the following steps: preparing Zn-based MBON from zinc salt, boric acid and imidazole through a hydrothermal method, and then completely replacing the zinc component with copper to obtain Cu-based MBON, namely the boron-containing copper-based three-dimensional metal organic framework material. The specific surface area of the material is large, and a three-dimensional nano flower-shaped unique structure is formed. The prepared material is used as a catalyst for furfural electro-hydrogenation and carbon dioxide reduction reaction, the diffusion efficiency of reactants (such as furfural and CO2) can be enhanced, rapid desorption of products (such as furfuryl alcohol and ethylene) can be promoted through the surface capillary action, meanwhile, generation of by-products caused by excessive reaction is inhibited, and the selectivity of target products is improved.
Owner:QILU UNIVERSITY OF TECHNOLOGY (SHANDONG ACADEMY OF SCIENCES)

Diffuser for recirculated liquids

A diffuser for separating a gas component and a liquid component of a liquid-gas mixture to reduce slosh in vehicle systems is described herein. The diffuser includes a wall with a gas end, a liquid end, and multiple vanes partially extending from the liquid side to the gas side. The vanes are spaced apart from each other by a given distance to permit the liquid to flow toward the liquid end via capillary action.
Owner:BLUE ORIGIN MANUFACTURING LLC

Mesh woven structure with capillary action

A mesh woven structure with capillary action is applied to a two-phase fluid heat dissipation unit. The mesh woven structure includes multiple latitudinal lines and multiple longitudinal lines. At least two longitudinal lines are selectively arranged as a longitudinal line set. The mesh woven structure is woven from the single latitudinal line and one cooperative longitudinal line set, which sequentially repeatedly intersect (and overlap with) each other. Accordingly, the number of the voids of the mesh woven structure is increased so that the mesh woven structure has better capillary attraction and water collection (containing) ability to greatly enhance the heat transfer performance.
Owner:ASIA VITAL COMPONENTS (CHINA) CO LTD

High temperature and supersonic aircraft thermal protection structure

A thermal protection structure of a high-temperature and supersonic aircraft belongs to the technical field of thermal protection of aircrafts under high heat flux and comprises a water absorption layer, a front edge area and two side areas, and the front edge area comprises a first evaporative cooling porous medium layer, a cross-scale porous medium layer and a high-temperature-resistant wall surface which are sequentially laid on the outer side of the front edge of the water absorption layer; the two side areas comprise a second evaporative cooling porous medium layer and a third evaporative cooling porous medium layer which are laid on the outer sides of the two sides of the water absorption layer respectively, and a coolant conveying pipeline communicated with the front edge and the two side areas is arranged on the inner side of the water absorption layer; fluid is sucked to the high-temperature-resistant wall face through the capillary acting force of micron-scale and nano-scale pores of the first evaporative cooling porous medium layer and the cross-scale porous medium layer, the millimeter-scale pores of the cross-scale porous medium layer provide steam escape channels, and the high-temperature-resistant wall face blocks direct disturbance of high-temperature main flow to the fluid in the porous medium. Steam outlets on two sides of a front edge stagnation point discharge steam; the device has the advantages of no need of an additional liquid supply power device, high temperature resistance and high cooling efficiency.
Owner:XI AN JIAOTONG UNIV

Electrode plate, electrode assembly, battery cell, battery and electrical device

An electrode plate comprises a current collector, an active material layer and a functional layer. The active material layer comprises a main body area and a thinned area, the thinned area being arranged at the end of the main body area in a first direction, and the thickness of the main body area being greater than the thickness of the thinned area. The thinned area of the active material layer of the electrode plate is provided with the functional layer that allows the electrolyte to pass through, such that after the electrode plate is wound or stacked to form an electrode assembly, a gap between the functional layer and the separator is small, thus helping to exhibit the capillary action, and enabling the electrolyte to pass through the functional layer to quickly infiltrate the thinned area.
Owner:CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED

Semiconductor device

A semiconductor device includes a semiconductor chip having a semiconductor integrated circuit. At least a portion of the cooling channel is formed in the semiconductor chip. The first capillary core structure may be disposed on a bottom of the cooling channel that is parallel to an upper surface of the semiconductor chip in a lateral direction. The first capillary wick structure may move the liquid coolant in a lateral direction along the bottom of the cooling channel by capillary action. A second capillary wick structure may be disposed along the inner surface of the steam chamber and may move the liquid coolant along the inner surface of the steam chamber by capillary action.
Owner:SAMSUNG ELECTRONICS CO LTD

Liquid storage bottle and liquid replenishment system

A liquid storage bottle including a groove or a rib that can hold, by capillary action, ink adhering to a nozzle tip part of the liquid storage bottle after the ink is supplied from the liquid storage bottle to a liquid tank, and a liquid replenishment system.
Owner:CANON KK

Composite vapor chamber

The utility model discloses a composite uniform-temperature plate which comprises a top plate. The bottom plate is buckled with the top plate, and a vacuum cavity is defined by the bottom plate and the top plate; the first supporting columns are arranged in the vacuum chamber and abut against the top plate and the bottom plate respectively; a plurality of drainage grooves are formed in the outer circumferential surface of the first supporting column; and the first capillary liquid absorption structure is arranged in the drainage groove. In the vacuum chamber, the drainage groove provides a special channel for flowing of the working medium, and the liquid working medium can be subjected to a stronger capillary action and can be quickly sucked back to a heating area, so that the capillary suction force of the composite vapor chamber to the working medium is enhanced, and the backflow speed is increased; meanwhile, the drainage groove is filled with the first capillary liquid suction structure, the capillary suction force of the liquid working medium in the vacuum cavity is further enhanced, the higher the capillary suction force is, the higher the flowing speed of the liquid working medium is, the working medium can flow back along the drainage groove at a higher speed, the backflow speed of the working medium can be further increased, and the service life of the working medium is prolonged. And the heat transfer efficiency of the composite vapor chamber is further improved.
Owner:SHENZHEN FRD SCI & TECH

Asymmetric bionic texture pyramid microcolumn array device for enhancing thin film evaporation

The invention relates to an asymmetric bionic texture pyramid micro-column array device for enhancing film evaporation, the device can stably transport a coolant and expand the effective evaporation area, and the device specifically comprises: a micro-column unit, the top of which is made of a hydrophobic material and the side wall of which is subjected to hydrophilic treatment and has a textured structure; the micro-column array is composed of micro-column units which are asymmetrically arranged, and the wetting perimeter, period and gradient of the micro-column array are subjected to accurate optimization design; in addition, according to the micro-column array, the capillary transport efficiency of the liquid is further enhanced by adjusting the distance and the height gradient between the micro-columns, and therefore the evaporation area of the thin liquid film is effectively expanded. The top of the micro-column unit is made of a hydrophobic material, the side wall is subjected to hydrophilic treatment and is combined with a micro-texture structure, the distribution and capillary action of liquid are optimized, and the stable transportation capacity of the liquid on the surface of the micro-column is remarkably improved. The device has excellent heat dissipation performance while improving the liquid transportation efficiency and the thin film evaporation performance, and is widely applied to the high-heat-flux fields such as efficient heat dissipation and microelectronic cooling.
Owner:SHANGHAI JIAOTONG UNIV

High-precision tool setting device for numerical control machining

The invention discloses a high-precision tool setting device for numerical control machining, which belongs to the technical field of numerical control machining and comprises a control system, a worktable, a tool arranged on the worktable, a tool setting gauge fixedly mounted on the worktable and a driving mechanism arranged on the worktable. The blow-off drying mechanism comprises fixing bases symmetrically and fixedly installed on the two sides of the tool setting gauge, a blowing assembly arranged on the two fixing bases, a first sensor and a second sensor, wherein the first sensor and the second sensor are arranged at the top and the bottom of the blowing assembly respectively. According to the numerical control machining high-precision tool setting device, the blow-off drying mechanism, the shielding protection mechanism and the driving mechanism are matched, air blowing, liquid removing and drying can be conducted on a tool nose of a tool firstly, meanwhile, an umbrella-shaped cover is used for protecting and shielding a tool setting gauge, contact tool setting is completed after resetting and avoiding are conducted, capillary acting force generated by a cutting liquid film is fundamentally eliminated, and the working efficiency is improved. Real and reliable contact between the tool nose and the tool setting gauge is guaranteed, and tool setting precision and repeated reliability are improved.
Owner:周楚杰

High-salt-resistance double-layer self-floating hydrogel evaporator and preparation method and application thereof

The invention discloses a high-salt-resistance double-layer self-floating hydrogel evaporator and a preparation method and application thereof.The preparation method comprises the steps that firstly, sodium alginate is dissolved in water, then pyrrole is fully stirred in the sodium alginate solution, and a uniformly-mixed solution is obtained; dipping the melamine foam in the mixed solution, soaking the melamine foam in a CaCl2 solution for crosslinking, and finally soaking the primarily crosslinked melamine foam in a FeCl3 solution to oxidize the surface of the melamine foam; the preparation process is simple, the hydrogel evaporator has extremely high hydrophilicity, the three-dimensional network structure provides a favorable channel for water transmission, a certain amount of calcium alginate grids are damaged during oxidation to form capillary action with melamine foam of a carrier, the escape efficiency of water molecules is improved, and the service life of the hydrogel evaporator is prolonged. The polypyrrole nanospheres with the three-dimensional structure can perform multiple times of refraction and reflection on light to enhance light absorption, and the evaporation efficiency of aerogel intermediate water is accelerated.
Owner:SHAANXI UNIV OF SCI & TECH

Plant cultivation system and method based on liquid-gas-solid three-state cooperative regulation

The invention discloses a plant cultivation system and method based on liquid-gas-solid three-state cooperative regulation, the plant cultivation system based on liquid-gas-solid three-state cooperative regulation comprises a cultivation container, a field planting skeleton, a degradation film and a regulation area; the planting framework is arranged in the cultivation container and divides the interior of the cultivation container into a liquid area, an air area and a substrate area, the degradation film covers the space between the air area and the substrate area, and a plant root system can pierce the degradation film from the substrate area through growth and extends to the air area and the liquid area. The capillary action of nutrient and temperature and humidity adjustment, water evaporation or liquid and substrate coupling can be obtained, the substrate can keep moist for a long time, plants are induced to form water roots and expand root growth space, fertilizer water can be circularly supplied through bottom liquid, the fertilizer water can be easily adapted to and controlled by plant growth requirements, and concentrated regulation and unified supply of the fertilizer water can be realized; labor is saved; and time efficiency is improved.
Owner:申文彪

Functional fabric capable of synchronously realizing electric heating and infrared stealth as well as preparation method and application of functional fabric

The invention discloses a functional fabric capable of synchronously achieving electric heating and infrared stealth and a preparation method and application thereof.The fabric is of a sandwich structure, the outer layer is an infrared stealth layer, cellulose is used for modifying the fabric, the porosity is reduced, the capillary action is improved, a low-emissivity material and the fabric are tightly combined, the surface is smooth, the problem that inorganic materials fall off is solved, and the fabric has the function of infrared stealth. The infrared stealth effect is enhanced; the interlayer is a heat insulation layer, the aerogel is subjected to silanization modification, rigid chain segments are introduced to form a rigid-flexible physical cross-linked network, the hydrogen bond strength and mechanical performance are improved, heat loss of the inner layer is slowed down, collaborative stealth is achieved, and infrared stealth of the thin aerogel under heating is achieved; the inner layer is an electric heating layer, PEDOT: PSS and CF are compounded, and the pi-pi conjugation action of the PEDOT: PSS and the CF changes the arrangement of macromolecular chains, reduces the contact resistance of the CF, improves the conductivity of the PEDOT: PSS and enhances the electric heating performance.
Owner:SHAANXI UNIV OF SCI & TECH

Battery cell preparation method, battery cell and solid-state battery

The invention relates to the technical field of solid-state batteries, and discloses a preparation method of a battery cell, which comprises the following steps: stacking a positive pole piece, a negative pole piece and a solid-state electrolyte layer according to the sequence of the positive pole piece, the solid-state electrolyte layer, the negative pole piece and the solid-state electrolyte layer to obtain a lamination structure; wherein at least one side of the negative pole piece in the circumferential direction exceeds the positive pole piece to form an overhang area, and sheet layer gaps are formed in the circumferential side surface of the laminated structure; enabling an overhang area of the lamination structure to extend downwards into the filler infiltration liquid, and enabling a lamella gap to be infiltrated and filled through capillary action to obtain the lamination structure with a filling layer; solidifying the lamination structure with the filling layer to fix the positions of the positive pole piece, the solid electrolyte layer and the negative pole piece; and performing isostatic pressing treatment to obtain the battery cell. The capillary force of the lamellar gaps is utilized, so that the filler infiltration liquid can automatically infiltrate and fill the lamellar gaps of the laminated structure under the capillary action, and the rapid and uniform filling effect is achieved. The invention further discloses a battery cell and a solid-state battery.
Owner:CHONGQING CHANGAN AUTOMOBILE CO LTD

Integrated gas diffusion layer with hydrophilic and hydrophobic structure as well as preparation method and application of integrated gas diffusion layer

The invention discloses an integrated gas diffusion layer with a hydrophilic and hydrophobic structure and a preparation method and application thereof, and belongs to the technical field of fuel cells. The integrated gas diffusion layer structure comprises a hydrophilic layer and a hydrophobic layer, the hydrophilic layer is a planar layer, the hydrophobic layer is a mixed layer with ridges I and grooves I, no transition layer exists between the hydrophilic layer and the hydrophobic layer, the hydrophilic layer is located between the hydrophobic layer and a fuel cell membrane electrode catalyst layer, and the hydrophobic layer is located between a fuel cell bipolar plate and the hydrophilic layer. The preparation method of the integrated gas diffusion layer comprises the following steps: sequentially blade-coating hydrophobic layer slurry and hydrophilic layer slurry into a mold with a ridge II and a groove II, and finally demolding to obtain the integrated gas diffusion layer. The integrated gas diffusion layer is used for the gas diffusion layer of the proton exchange membrane fuel cell, the hydrophobic layer has a larger contact angle, gas transmission and discharge of generated water are facilitated, the hydrophilic layer separates out the water through capillary action, the mass transfer resistance is reduced, and the performance of a membrane electrode is improved.
Owner:SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING

Nucleic acid amplification reaction container and manufacturing process thereof

According to the nucleic acid amplification reaction container and the manufacturing process thereof, according to the manufacturing process of the nucleic acid amplification reaction container, bonding glue is soaked in a gap between a pipe body and a sleeve through the capillary action, bonding and fixing of the pipe body and a plastic pipe frame are achieved, and the bonding glue is liquid containing pigment. The method has the following beneficial effects: 1, proper materials can be selected according to requirements, and melting points of the two materials do not need to be considered, so that the cost of raw materials can be optimized; 2, accurate temperature and time control is not needed, and only proper dispensing amount needs to be adjusted; and 3, efficient bonding of the pipe frame and the pipe body is realized, and the yield is improved. And 4, the adhesive does not need to be coated on the inner wall of the pipe body, and does not block the pipe body or pollute the inner wall of the pipe body to affect PCR amplification. And 5, whether a colored closed rubber ring is formed between the tube body and the sleeve is visually and intuitively detected.
Owner:GUANGDONG HECIN SCI INC

Porous wick based on conformal metal metamaterial

A porous wick based on a conformal metal metamaterial comprises a pipe body, a wick body is arranged in the pipe body in a sleeved mode, the wick body comprises a conformal design porous structure, gaps of the porous structure are filled with the metal metamaterial, and a design method of the porous structure comprises the steps that mesh generation is conducted on a model of the wick body, and after mesh generation, the wick body is made of the metal metamaterial. A conformal design method is adopted to fill each gap of a wick with a metal metamaterial, the wick is prepared through a 3D printing manufacturing technology, the unit cell geometrical shape of the metamaterial can be regulated and controlled according to the actual situation of a porous structure, the metal metamaterial is introduced, the highly optimized porous structure is adopted, and the performance of the wick is improved. The capillary action and the liquid transmission efficiency of the wick are remarkably improved, the parameters such as porosity, unit cell size and microstructure type can be adjusted, and the capillary capacity and the fluid flowing path are optimized.
Owner:SHANGHAI QINXIAHAO TECHNOLOGY CO LTD +1

Vapor chamber and preparation method thereof

The invention discloses a vapor chamber and a preparation method thereof, the vapor chamber comprises an upper cover plate, a lower cover plate and a capillary structure, the upper cover plate and the lower cover plate form a sealed cavity, and the capillary structure is packaged in the sealed cavity; the capillary structure comprises a liquid backflow layer, a steam transmission layer and a supporting layer which are overlapped, and the liquid backflow layer is used for guiding liquid condensed by the condensation area back to the evaporation area again through the capillary action; the steam transmission layer is used for providing a low-resistance path for steam to move to the condensation area; and the supporting layer is used for providing support for the liquid backflow layer and the steam transmission layer. The heat dissipation reliability of the vapor chamber can be improved.
Owner:SHAANXI SIRUI COPPER ALLOY INNOVATION CENT CO LTD

Janus mesh for fog harvesting and method of making the same

The Janus mesh for fog harvesting is a mesh with a superhydrophobic side and an opposed hydrophilic side. The Janus mesh is formed from a brass mesh with opposed first and second sides. The first side has the hydrophobic layer formed thereon and the second side has the hydrophilic layer formed thereon. The hydrophobic layer is formed from ZnO nanowires and stearic acid, and the hydrophilic layer is formed from just the ZnO nanowires. The Janus mesh is made by growing the ZnO nanowires on the first and second sides of the brass mesh using a calcining step. The first side of the brass mesh is sprayed with stearic acid to form the hydrophobic layer. The second side is treated with ultraviolet radiation to degrade any of the stearic acid that migrated to the second side via capillary action, thus forming the hydrophilic layer made from just the ZnO nanowires.
Owner:THE HONG KONG UNIV OF SCI & TECH

Multi-level EC-ZP-coated ESi-P solar evaporator based on bionic double-channel structure and preparation method of multi-level EC-ZP-coated ESi-P solar evaporator

The invention provides a multi-level EC-ZP-ESi-P solar evaporator based on a bionic double-channel structure and a preparation method thereof.The solar evaporator comprises a photo-thermal conversion layer, a hydrophilic thermal insulation layer and a water conveying column, the photo-thermal conversion layer is arranged on the upper surface of the hydrophilic thermal insulation layer, and the upper end of the water conveying column is connected with the middle of the lower surface of the hydrophilic thermal insulation layer; the water conveying column conveys liquid below to the hydrophilic thermal insulation layer through the capillary action; the preparation method of the photo-thermal conversion layer EC-ZP porous carbon nanofiber membrane comprises the following steps: taking ZIF-8 particles and PAN as raw materials, carrying out electrostatic spinning, and then carrying out high-temperature carbonization; the preparation method of the hydrophilic heat-insulating layer ESi-P nanofiber membrane comprises the following steps: taking SiO2 nanoparticles and PAN as raw materials, and carrying out electrostatic spinning. The EC-ZP-coated ESi-P solar evaporator can effectively prevent salt crystallization from blocking a steam channel, solves the problem of performance degradation caused by salt crystallization in an existing solar evaporation device, improves the photo-thermal conversion efficiency and the water-heat cooperative management capability at the same time, and achieves efficient and sustainable seawater desalination.
Owner:FUJIAN AGRI & FORESTRY UNIV

Solid-state lithium target cooling device for neutron source of accelerator

The invention discloses an accelerator neutron source solid-state lithium target cooling device, and relates to the technical field of accelerator neutron source medical application. An annular heat pipe is arranged on the outer ring of the side portion of an oxygen-free copper substrate, a plurality of liquid absorption cores are arranged on the inner wall of the heat pipe, and meanwhile an inner cavity of the heat pipe is filled with a working medium; when heat is generated, the heat is firstly transferred to the oxygen-free copper substrate, the evaporation section of the heat pipe is heated, the working medium in the wick is quickly evaporated and gasified, the generated steam flows to the condensation section under the driving of differential pressure and is condensed into liquid in the condensation section and releases heat, and the liquid generated by condensation returns to the evaporation section again under the capillary action of the wick. The space of the arranged heat pipe is large, and in the aspect of heat dissipation, the working medium is subjected to gas-liquid phase change in the heat pipe under the action of the liquid absorption core, so that the accelerator is rapidly dissipated, heat on the solid target material film can be rapidly taken away, and the cooling effect on the accelerator is greatly improved.
Owner:XI AN JIAOTONG UNIV