134 results about "Nanofluidics" patented technology

The invention discloses an S-shaped micro-channel heat dissipation device with a double-layer turbulent flow structure and a use method, belongs to the field of liquid cooling heat dissipation, and is suitable for heat dissipation of a high-heat-flux device or a heat conduction device. The device comprises a base, a cover plate, a micro-channel body, turbulent flow columns, a flow guide structure, O-shaped sealing rings and quick-screwing connectors, the micro-channel body is provided with S-shaped channels which are vertically symmetrical, the turbulent flow columns are evenly arranged in the centers of the channels, and the top ends of the turbulent flow columns are flush with the end face of the micro-channel body. The turbulent flow columns can be rectangular columns or water-drop-shaped columns which are arranged in a single row or multiple rows at equal intervals and are matched with the flow guide structure to achieve efficient flow division of cold and hot fluid and interlayer heat interaction. Fluid mixing is strengthened through the centrifugal force of the S-shaped channel, a heat boundary layer is destroyed by the turbulent flow columns, and the problems that a traditional straight channel is low in heat exchange efficiency and uneven in temperature distribution are solved. Deionized water or nanofluid is selected as cooling liquid, closed circulation is formed by entering and exiting of the cooling liquid through the quick-screwing connector, and the adaptive scene and the comprehensive performance of the device are further expanded through the multiple rows of turbulent flow columns or the water-drop-shaped turbulent flow columns.

The invention discloses a soft coal seam nanofluid fracturing propping material and a preparation method thereof.The soft coal seam nanofluid fracturing propping material is prepared from, by weight, 80-90% of a base material, 1-5% of a super-hydrophobic coating, 5-10% of a catalytic active component and 5-15% of a rheological enhancer, the base material is a compound of high-purity silicon dioxide nanoparticles and graphene nanosheets GNP, the particle size of the high-purity silicon dioxide nanoparticles is 50-200 nm, the super-hydrophobic coating is a fluorosilane modified layer, the thickness of the super-hydrophobic coating is 5-20 nm, and the invention relates to the technical field of coal bed gas exploitation. According to the soft coal seam nanofluid fracturing propping material and the preparation method thereof, the surface of the material is provided with a super-hydrophobic coating, friction force with a coal matrix is reduced, high embedding resistance is achieved, the flow conductivity is specifically enhanced, an extra flow channel is provided through a porous nanostructure, the fracturing fluid permeability is improved, and meanwhile gas desorption can be cooperated; catalytic active sites are introduced to the surface of the material to promote adsorption and diffusion of methane molecules.

The invention relates to the technical field of nanofluid enhanced heat transfer simulation, in particular to a molecular dynamics-based mixed nanofluid heat transfer characteristic analysis method, which comprises the following steps of: constructing a molecular model comprising copper, graphene nanoparticles and an ionic liquid / water mixed base solution, and calculating the heat transfer characteristic of the mixed nanofluid through a distribution potential function and a periodic boundary condition; and performing energy minimization and molecular dynamic relaxation to achieve thermodynamic equilibrium. A steady-state temperature gradient is established based on the unbalanced molecular dynamics principle, and the thermal conductivity is calculated according to the Fourier law. Microcosmic parameters such as a radial distribution function, mean square displacement and the number of hydrogen bonds are synchronously analyzed, and a coupling mechanism of interaction and heat transfer performance of the nano-particle-base fluid interface is disclosed. According to the method, the heat transfer characteristic of the mixed nanofluid can be clarified on the molecular scale, and an efficient and reliable analysis means is provided for nanofluid screening and design in application of a solar heat collector, a heat management system and the like.

The invention discloses an oil-displacing agent based on zirconium oxide nanosheets and a preparation method of the oil-displacing agent. The oil displacement agent comprises the following components in parts by mass: 0.2-1 part of zirconium oxide nanosheets, 10-30 parts of a surfactant and 5000-10000 parts of water, the size range of the zirconium oxide nanosheet is 200 to 300 nm. The two-dimensional zirconium oxide nanosheet is prepared by utilizing a green substitute solvent-ionic liquid assisted alcohol solvothermal method, the synthesis method is simple, convenient, effective and green, and the size of the product is controllable. The zirconium oxide material has the characteristic of changing rock wettability, and can be used as a metal oxide nano material to improve the viscosity of the prepared nanofluid, reduce the fluidity ratio, generate structural separation pressure on the interface of crude oil and reservoir rock and realize efficient stripping of retained crude oil, thereby greatly improving the recovery efficiency.

The invention discloses a nanofluid mixed matrix membrane as well as a preparation method and application thereof, and belongs to the field of gas separation. The nanofluid mixed matrix membrane comprises a polymer matrix and a nanofluid filler, the nanofluid filler is of a three-dimensional layered structure, a core layer is a porous material layer, a secondary outer layer is a coupling agent connecting layer, and an outermost layer is an organic matter coronal layer containing a CO2-philic group. The coronal layer improves the compatibility of the porous material and the polymer matrix and increases the CO2 affinity of the mixed matrix membrane, not only increases the diffusivity of the mixed matrix membrane, but also increases the CO2 solubility, and due to the unique connection mode between the porous core and the coronal layer, the thermal stability of the porous core and the coronal layer is also enhanced. Therefore, the prepared novel efficient mixed matrix membrane has good gas separation performance and thermal stability and is especially suitable for CO2 separation, and CO2 / H2 of the product breaks through the Robeson upper limit in 2008.

The invention relates to the technical field of micro-nano electronic devices, in particular to a nanofluid memristor prepared by puncturing a PDMS film and a mechanical-electric coupling regulation and control system and method of the nanofluid memristor. The memristor is composed of a silicon substrate with a window and a PDMS thin film covering the silicon substrate, a three-degree-of-freedom probe station is used for driving a tungsten probe to conduct nanoscale puncture on the PDMS thin film under an optical microscope, and a pore channel with the self-constriction / reversible closing characteristic is formed; after the needle is removed, the hole channel is in a near-closed or sub-nanometer equivalent hole diameter state, by applying controllable pressure to the closed liquid chamber and superposing bias voltage, sudden change / gradual change dual-mode regulation and control of the hole diameter and non-volatile hysteresis conductance switching are achieved, and the switch ratio of the device can reach 108. According to the method, FIB is not needed in hole forming, the process is simple and convenient, the cost is low, high-contrast and programmable nanofluid memristive behaviors are achieved through the structural design of the window orientation and the clamping direction, pressure rate programming and a pressure removal maintaining / negative pressure reset strategy, and the method is suitable for the fields of single molecule detection, ion circuit storage and the like.

Provided are a wafer cleaning method capable of uniformly cleaning an entire area of a wafer, and a wafer cleaning apparatus to which the method is applied. The method includes positioning a cleaning tool to face a surface of the wafer requiring cleaning; supplying a cleaning liquid containing ions to an area between the wafer and the cleaning tool; adjusting a spacing between a surface of the wafer and the cleaning tool for a viscosity of the cleaning liquid therebetween to be controlled by an electric field; and relatively rotating the wafer from the cleaning tool while the electric field being applied to at least a portion of the cleaning liquid, thereby cleaning the surface of the wafer with the cleaning liquid.

This application discloses a nanofluid, its preparation method, and its applications. The nanofluid comprises, by mass fraction: 0.01% to 0.7% modified nanoparticles, 1% to 4% surfactant, 0.2% to 0.6% polymer, and 0.01% to 0.2% short-chain alkanes, with the balance being water. The nanofluid provided in this application, through the synergistic effect between specific components, can significantly improve C / W foam stability and enhance oil recovery. Foam displacement agents prepared using this nanofluid can improve permeability and asphaltene content after displacement, exhibiting good overall performance.

The invention provides a transparent restraint layer suitable for laser shock and a laser shock forming method and device of a metal plate, belongs to the technical field of metal plate laser processing, and aims to solve the technical problem of failure of the restraint layer in a low-temperature environment. The forming method comprises the steps that an absorption layer and a transparent restraint layer are sequentially laid on the surface of a to-be-impacted workpiece, and the transparent restraint layer sequentially comprises a polyurea-polyurethane elastomer layer, a nanofluid layer and a hydrogel layer in the direction close to the to-be-impacted workpiece to the direction away from the to-be-impacted workpiece; a single-laser-head or multi-laser-head array is adopted to implement pulse impact, and a temperature-stress-displacement multi-physical-field closed loop is constructed through displacement sensing, temperature sensing and ultrasonic stress sensing; and the industrial controller operates a model prediction control algorithm to perform linkage optimization on the laser energy density E, the scanning speed v and the hydrogel layer volume flow q. Compared with an existing double-layer constraint and double-feedback scheme, the method has remarkable technical progress in the aspects of low-temperature stability, array consistency and forming consistency.

A kind of solid-liquid two-phase nanofluid cooling fluid optimization method for machine tool spindle dynamic cooling, first carry out the sensitivity / correlation analysis of parameter variable, find out the nanofluid parameter that is strongly related to convective heat transfer characteristics;Then describe the percolation structure of nanoparticle aggregation, based on thermal conductivity model and effective viscosity model into finite element simulation;Then analyze and determine the key parameters of nanofluid in spindle cooling, qualitative selection of the optimization combination of key parameters;According to the "two-step method", nanofluid is prepared, and convective heat transfer experiment is carried out for nanofluid, and the experimental results of nanofluid are compared transversely, and the nanofluid with maximum average convective heat transfer coefficient is selected quantitatively;The present application greatly improves the convective heat transfer rate of the cooling fluid in the machine tool spindle, makes the precision machine tool spindle thermal error in high-speed machining long-term stable, and then eliminates the influence of spindle thermal error on machining precision of machine tool through tool.

The application discloses a preparation method of a high-stability cellulose nanofluid film, and a product and application thereof, and belongs to the field of energy conversion and material science. The method comprises the following steps: adding modified cellulose into an ionic liquid to prepare a solution by heating; dropping and coating the solution onto the surface of a porous polymer film, and preparing a gel film by heating and vacuum treatment; and obtaining the nanofluid film after water soaking and drying of the gel film. The nanofluid film adopts an embedded structure, the cellulose layer is a small-pore structure, the porous polymer film is a large-pore structure, and the nanofluid film has etching and three-dimensional network channel structures. The preparation process is simple and the conditions are mild, the prepared film has excellent ion rapid selective transmission performance, acid-base stability and long-term operation stability, can efficiently convert salinity gradient energy into electric energy, and has a good application prospect in the field of salt-difference osmotic energy utilization.

The invention provides a nanofluid gradient film, a preparation method thereof and application of the nanofluid gradient film in preparation of a pressure sensor. According to the gradient film, the interlayer spacing, the charge density and the wettability of MXene are adjusted by cooperatively inserting different amounts of one-dimensional carboxylated cellulose nanofibers. A nano channel of the gradient membrane is divided into a weak confinement region, a medium confinement region and a strong confinement region, and a rapid permeation-charge shielding-confinement enhanced efficient ion transmission path is constructed. Compared with a single uniform channel, the triple gradient nano channel shows high and different force-electricity response signals to different metal cations. According to the pressure sensor constructed based on the nanofluid gradient film, the sensing performance is remarkably improved in a NaCl solution, the sensitivity of the pressure sensor is 37.28 nA cm <-2 > kPa <-1 >, the cycle stability reaches 50000 times, the response time is 119 ms, and the pressure sensor exceeds the level of currently reported similar sensors.

This invention discloses a ternary composite oil displacement system based on the synergistic effect of nanofluids and polymers, belonging to the field of petroleum extraction technology. It includes a pretreatment unit, a nanofluid supply unit, a temperature- and salt-resistant polymer supply unit, a composite mixing unit, an online synergistic injection unit, and a formation synergistic displacement unit. The outlet of the pretreatment unit is connected to the composite mixing unit, and the nanofluid supply unit and the temperature- and salt-resistant polymer supply unit are connected in parallel to the composite mixing unit. Through the synergistic effect of nanofluids and temperature- and salt-resistant polymers, multiple synergistic effects of "dispersion stabilization, viscosity enhancement, seepage control, and residual oil stripping" are achieved. The modified nanoparticles and temperature- and salt-resistant polymer molecules form hydrogen bonds and electrostatic adsorption complexes, which not only significantly improve the solubility and viscosity stability of the polymer in high-temperature, high-salinity formation water environments but also prevent polymer molecular chain degradation.

The invention belongs to the technical field of carbon dioxide capture and regeneration, and particularly relates to a magnetic nanofluid pseudo-homogeneous-microwave synergistic carbon dioxide desorption method. The invention provides an application of a nickel ferrite material as a catalyst in carbon dioxide absorption pregnant solution regeneration. According to the invention, the carrier-free and undoped spinel-type structure NixFe3-xO4 is used as a catalyst for carbon dioxide absorption rich liquid regeneration, and the catalyst has microwave absorption, catalytic activity and magnetic responsiveness. According to the desorption method provided by the invention, the nickel ferrite material forms a stable quasi-homogeneous dispersion system in the carbon dioxide absorption rich solution, and then under the conditions of low-temperature microwave radiation and stirring, the CO2 desorption load rate reaches more than or equal to 55% within 10-30 min, the desorption reaction rate is increased by more than or equal to 20% compared with that of traditional thermal regeneration, and the desorption time is reduced by more than half compared with that of traditional thermal regeneration.

The application discloses a kind of determination device and method of heat conducting oil-based magnetic nanofluid coking speed, it is related to with heat conducting oil as heat transfer medium in the technical field of medium-temperature solar thermal power generation system, oilfield ground gathering and transportation heating system etc., the method comprises: after heating heat conducting oil tank inside heat conducting oil-based nanofluid by electric heater, it is transported to steel pipe by heat conducting oil pump, the strength of magnetic field is adjusted by adjusting the number of magnetic block and the distance between adjacent magnetic blocks, different intensity magnetic field is applied to the fluid received in steel pipe;The coking product on the first hanger sheet in heat conducting oil tank and the second hanger sheet in steel pipe after applying for a period of time is dried respectively, the mass of coking product in two states before and after applying magnetic field is obtained, so as to calculate the coking speed;By changing magnetic field, the turbulence degree of heat conducting oil can be increased, the convective heat transfer coefficient can be improved, the fluid heat transfer can be strengthened, the formation of heat conducting oil coking can be slowed down, and the service life can be prolonged.

The invention provides a port oil spilling sewage treatment method and device, and relates to the technical field of port sewage treatment. The method comprises the following steps: gathering dispersed oil drops in sewage through an acoustic standing wave field to form an oil drop aggregate; injecting a magnetic nano-fluid of which the surface is modified with a bionic coating to form an oil drop-magnetic nano-particle complex; applying a gradient magnetic field to directionally migrate the complex; separating the migration complex from the water phase to obtain oil stain and purified water; and finally, the oil stains are desorbed from the surfaces of the magnetic nano-particles, and the magnetic nano-particles are recovered. According to the method, through the synergistic effect of acoustic aggregation, magnetic adsorption, magnetic field migration and multi-stage separation, efficient separation of oil drops and cyclic utilization of materials are achieved, and the method has the advantages of being high in treatment efficiency, environmentally friendly and low in cost.

The dynamic programmable nanofluid memristor comprises a tubular channel and a flexible built-in block, the tubular channel is filled with an electrolyte solution, and the inner surface of the tubular channel and the outer surface of the built-in block have hydrophilicity; the sizes of the tubular channel and the built-in block are gradually changed and have opposite changing directions, the built-in block is in clearance fit with the interior of the tubular channel to form a nanometer channel of a double-cone nested structure, the nanometer channel comprises a parallel section and a conical section, the size of the parallel section is smaller than that of the conical section, and the conical section is larger than the parallel section. The memristive effect is triggered by the ion concentration difference of the parallel section and the conical section under the action of an external electric field, the strength of the memristive effect is regulated and controlled by changing the lengths of the parallel section and the conical section, the dynamic regulation of the memristive performance is realized, and the memristive device has the advantages of high stability and reliability, flexible regulation and control mode, strong designability and the like.

This application relates to the field of liquid cooling technology, and discloses a highly stable, anti-sagging liquid-cooled composite nanofluid and its preparation method. The composite nanofluid comprises: deionized water and 1,2-propanediol as the continuous phase, graphene and single-walled carbon nanotube composite particles as the dispersed phase, and introduces a ternary rheological control system composed of a rheology modifier, polyvinylpyrrolidone, and a polymeric dispersant in a specific ratio, endowing the fluid with thixotropic and anti-sagging properties. This application improves the overall service stability and thermal management reliability of the liquid-cooled composite nanofluid under alternating high-speed pumping and static shutdown conditions.

The invention discloses a method and a system for determining particle size distribution of ice slurry containing a nanofluid salt solution, and relates to the technical field of ice slurry refrigeration, the method comprises the following steps: coupling a local concentration field of nanoparticles in a solution with a driving force in a phase change process to obtain a control relationship of the ice slurry containing the nanofluid salt solution; defining the ice crystal as a discrete phase, and establishing a dynamic relationship between the nucleation rate and the growth rate; solving the control relation based on the initial parameters of the dynamic relation, extracting size information of the ice crystals from a solving result, and dividing a plurality of characterization intervals according to the size information to obtain first volume fraction distribution of the ice crystals; according to the method disclosed by the invention, a dynamic relationship between nucleation and growth of an ice crystal dispersed phase is established by coupling a nanoparticle local concentration field and a phase change process driving force, and then theoretical solution and iterative calibration of experimental data are combined, so that accurate determination of the particle size distribution of the ice slurry containing the nanofluid salt solution is realized.

The invention discloses a super-hydrophobic surface self-cleaning design method based on molecular dynamics simulation, relates to the technical field of super-hydrophobic surface self-cleaning and nanofluid, and discloses a process of impinging deposited liquid drops on a molecular level based on molecular dynamics (MD) simulation. By exploring the influence of various parameter groups, Weber number (We), droplet size ratio (0.5 < = delta < = 2) and wettability (theta0), the results of deposition, regular rebound, closed pore rebound, rupture rebound and the like are systematically mapped to a series of phase diagrams, so that the process of impacting deposited droplets by droplets wrapped with nano-particles is simulated; and parameters such as the droplet size ratio, the Weber number and the surface wettability are optimized by analyzing the dynamic behavior and the energy conversion mechanism of droplet collision, so that the deposited droplets are efficiently and quickly removed. The method is suitable for the fields of micro-nano systems, anti-icing coatings, self-cleaning surfaces and the like, and has the advantages of being flexible in design, low in energy consumption and high in cleaning efficiency.

The invention discloses a zinc oxide-multi-walled carbon nanotube mixed nanofluid material as well as preparation and application thereof. The zinc oxide-multi-walled carbon nanotube mixed nanofluid material is prepared through S1, material preparation, S2, pretreatment, S3, preliminary dispersion and S4, ultrasonic treatment. The material can be applied to a high-efficiency heat exchanger, a solar heat collection system or an electronic equipment cooling system. According to the invention, a unique point-line synergistic three-dimensional heat-conducting network is constructed by compounding a multi-walled carbon nanotube with a one-dimensional structure and zinc oxide nanoparticles with a zero-dimensional structure; in the composite system, the zinc oxide nano-particles are used as a thermal bridge to effectively connect the adjacent carbon nano-tubes, so that the heat flow transmission path is obviously increased, and the interface thermal resistance is reduced; meanwhile, the production cost and the energy consumption can be reduced, and a technical guarantee is provided for large-scale application of the nanofluid in the industrial fields such as a solar heat collection system.

The invention discloses application of a nano-channel membrane to chiral amino acid recognition in a nano-fluid device, and belongs to the technical field of nano ion channels.The nano-fluid device comprises two conductance cells and a beta-CD-SHGO / SCNF nano-channel membrane arranged between the two conductance cells, electrodes are placed in the two conductance cells respectively, and the two conductance cells are filled with a salt solution; according to the application, the amino acid enantiomers are added into the two conductance cells of the nanofluid device, and chiral recognition detection data of the amino acid enantiomers are obtained. The nano-channel membrane has abundant ion transmission paths, good mechanical properties and abundant chiral surface groups, and has excellent selective adsorption recognition performance, high recognition sensitivity, wide concentration range of applicable recognition of chiral amino acids and considerable application value when being applied to recognition of chiral amino acids.

This invention relates to the field of nanofluid preparation technology and discloses a gradient dispersion preparation method for highly stable, low-agglomeration nanofluids, comprising the following steps: S1, drying, sieving, and surface activation pretreatment of nanoparticles; S2, mixing the pretreated nanoparticles with a modifier; S3, sequentially adding a pre-wetting liquid, a transition dispersion liquid, and a base liquid to form a transition suspension; S4, applying a gradient composite energy field to the transition suspension for graded deagglomeration; S5, adjusting the pH and viscosity of the deagglomerated suspension and adding a polymeric stabilizer; S6, precisely filtering the stabilized nanofluid to obtain a highly stable, low-agglomeration nanofluid. By employing a full-chain gradient dispersion technology solution involving nanoparticle pretreatment, surface modification, gradient wetting pre-dispersion, gradient composite energy field deagglomeration, multi-dimensional stabilization control, and multi-stage precision filtration, the problems of easy agglomeration, incomplete dispersion, and uneven particle size distribution of nanoparticles are solved.

An endovascular system for targeted photothermal ablation of perivascular nerves is disclosed. A catheter includes a fluid lumen communicating with outlet orifices, and an electromagnetic radiation emitter positioned within a support structure that apposes the array against a vessel wall. A proximal console independently controls irradiation and injection parameters. In use, a nanofluid comprising plasmonic nanoparticles, such as gold nanorods tuned for near-infrared absorption, is injected into or through the vascular wall and subsequently irradiated intraluminally; the nanofluid absorbs energy and converts it to heat to ablate adjacent nerve fibers while reducing non-target tissue heating.

The invention discloses a thermal field temperature equalization control method and system based on aerodynamic layout optimization, and belongs to the technical field of thermal field temperature control. The method is applied to a gas delivery system of a semiconductor thin film deposition process and comprises the following steps: constructing a pneumatic-thermal field coupling model, and quantitatively analyzing the influence of geometric characteristics of a pipeline on a temperature field; performing physical optimization on the pipeline structure based on the analysis result to reduce airflow disturbance; deploying a sensor network and executing double-domain cooperative dynamic control, stabilizing airflow in combination with a fuzzy PID algorithm, and presetting heating power by using a model predictive control algorithm to compensate thermal lag; a micro-channel heat exchanger filled with a phase change material and nanofluid is embedded in the area with the instantaneous thermal disturbance risk, so that the temperature peak is restrained; and self-optimization is carried out through the digital twinborn body. The gas temperature uniformity, the response speed and the long-term stability can be systematically improved from the source to the tail end, and the harsh requirements of the semiconductor process are met.

A wafer cleaning method capable of uniformly cleaning the entire area of ​​a wafer and a wafer cleaning apparatus to which the method is applied are provided. [Solution] The wafer cleaning method includes the steps of: positioning a cleaning tool (40) facing the wafer surface that requires cleaning; adjusting the distance between the wafer surface and the cleaning tool (40); supplying a cleaning liquid (55) containing ions between the wafer surface and the cleaning tool (40); applying an electric field to at least a portion of the area where the cleaning liquid (55) is present; and rotating the wafer (10) and the cleaning tool (40) relative to each other to clean the wafer surface with the cleaning liquid (55).

The application provides a nanofluid groove type solar concentrator and relates to the technical field of concentrators.The solar concentrator comprises a protective cover, a mounting seat is fixedly connected to the inner wall of the middle position of the bottom of the protective cover, a reflecting mirror is arranged in the mounting seat, and a nanofluid is arranged in a heat collecting pipe.The nanofluid comprises the following raw materials: multi-walled carbon nanotubes, glycerol and betaine.The nanofluid is prepared by compounding nanoparticles and a base fluid, is filled into the heat collecting pipe to perform heat absorption and heat conduction, the multi-walled carbon nanotubes have excellent heat conduction performance, the heat collecting pipe adopting the nanofluid has high efficiency in heat transfer, and due to the good stability of the nanofluid and the high refractive index of the nanoparticles, the nanofluid does not have the phenomena of precipitation and stratification in long-term use, and the heat collecting pipe has high heat transfer and heat conduction efficiency.

The application relates to the computer technical field, in particular to a nanofluid-assisted monocrystalline silicon cutting method based on molecular dynamics simulation and a computer system. By establishing a model of monocrystalline silicon, abrasive particles and nanofluid, cutting parameters in a nanofluid-assisted monocrystalline silicon cutting process are obtained through molecular dynamics simulation, the reduction effect of nanofluid-assisted lubrication on processing temperature and stress is intuitively quantified, and the feasibility and advantages of the nanofluid-assisted cutting monocrystalline silicon method are added. The application aims to solve the problem of how to simulate nanofluid-assisted monocrystalline silicon cutting through molecular dynamics simulation.

The invention belongs to the technical field of molecular dynamics simulation and nanofluid regulation and control, and particularly relates to a method for researching a limited water system in a carbon nanotube under the influence of a magnetic field based on molecular dynamics simulation. Molecular dynamics simulation is carried out on a water transmission process in the carbon nanotubes with different tube lengths under the influence of a magnetic field, so that a change rule of a structure and a transmission behavior of water molecules in the carbon nanotubes under different magnetic field intensities can be conveniently obtained, and an experimental method is not needed; the specific influence of the magnetic field intensity or the parameters of the carbon nano tube on the water transmission behavior can be simply and conveniently explored, so that the water molecule hydrogen bond network structure and orientation dynamics can be accurately regulated and controlled at the atomic molecule scale by optimizing the magnetic field parameters, and the water transmission process of the nano channel is optimized; and a new way is provided for designing and realizing a high-throughput nanofluid device.

Devices and methods are provided. An example device includes a dielectric having a channel extending from a first end of the dielectric to a second end of the dielectric. A first end of the channel is at the first end of the dielectric and a second end of the channel is at the second end of the dielectric. The device also includes a membrane on an exterior side of the dielectric that does not interface with the channel. Additionally, the device includes a first chamber, fluidly coupled to the first end of the channel, and a second chamber, fluidly coupled to the second end of the channel. When a fluid distributed among the first chamber, the channel, and the second chamber exhibits an ionic concentration gradient between the first chamber and the second chamber causing an ionic flow, an electric current is generated within the membrane.