217 results about "Microbubbles" patented technology

The invention relates to a metallized microbubble and a preparation method thereof, a construction method of a multifunctional composite probe, and a rapid bacterium capturing and sterilizing method, and belongs to the technical field of functional material preparation. The method aims at solving the technical problems that in the prior art, a metal coating on the surface of the hollow glass microbubble is not uniform, combination is not firm, and stability is poor. According to the technical scheme, the method is characterized by comprising the following steps: mixing surface-activated hollow glass microbubbles with a polyethyleneimine solution for reaction, and washing and drying to obtain polyethyleneimine-coated hollow glass microbubbles; then reacting with a single-stranded DNA buffer solution to obtain an intermediate product loaded with DNA; then introducing a silver nitrate solution to load silver ions on the surface of the compound; and finally, reducing through a sodium borohydride solution to prepare the metallized microbubbles. The metalized microbubbles prepared by the method can be used for constructing a multifunctional composite probe to realize efficient capture and synergistic antibiosis of targets such as bacteria.

An ultrasound transducer ultrasonically processes a target volume by emitting a sequence of acoustic pulses to the target volume to alter tissue properties while at least one acoustic detector detects an ultrasound reflected signal from the target volume after each acoustic pulse, and a controller (i) estimates an activity of the contrast agent at the target volume based on a comparison between values of signal parameters in the reflected signal following successive acoustic pulses, and (ii) controls the ultrasound transducer to alter the tissue property based on the estimated activity.

The invention discloses a rotational flow microbubble oscillation generator, system and method, relates to the technical field of microbubbles, and aims to strengthen gas-liquid mixing and mass transfer effects, so that the energy utilization efficiency is improved, and microbubbles with more uniform sizes are generated. The rotational flow microbubble oscillation generator comprises a rotational flow mixing component and a fluid oscillation component, and a feedback channel, and a flow inlet channel, an oscillation cavity, a vortex cavity and a bubble outlet which are communicated in sequence are arranged in the fluid oscillation component. Through the rotational flow mixing part, gas and liquid can be effectively mixed to form high-speed micro bubble jet flow, kinetic energy contained in the jet flow is utilized to cause sweeping motion in the fluid oscillation part, oscillation flow, feedback flow and vortex are formed, turbulent pulsation and collision are generated under the combined action of the oscillation flow, the feedback flow and the vortex, turbulent vortex shear breaking and jet flow shear breaking are caused, and the jet flow is formed. Therefore, the micro bubbles are subjected to secondary crushing, and micro bubbles with uniform size distribution and small average diameter are generated.

Various aspects of the present disclosure are directed towards apparatuses, systems, and methods for electroporation ablation. The electroporation ablation catheter may include an electrode assembly comprising one or more electrodes configured to generate electric fields in target tissue in response to a plurality of electrical pulse sequences delivered in a plurality of therapy sections, and an ultrasound transducer configured to generate a first set of ultrasound signals during a first electrical pulse sequence of the plurality of electrical pulse sequences and generate a second set of ultrasound signals after an end of the first electrical pulse sequence and before a beginning of a second electrical pulse sequence, the second electrical pulse sequence being an electrical pulse sequence subsequent to the first electrical pulse sequence.

The application discloses an ultrasonic-temperature double-triggered double-liquid gas phase change contrast agent and a preparation method thereof. The preparation steps comprise the following steps: adding an isotonic buffer solution into a prepared composite phospholipid film, oscillating after ultrasonic dispersion, obtaining a targeted phospholipid vesicle dispersion; then high-pressure double-liquid co-loading is carried out, and the phase change temperature and the ultrasonic response are calibrated; filtering through a filter membrane, collecting the precipitate after centrifugation, adding a protective solution after washing with a PBS buffer solution, and sealing and storing to obtain the double-liquid gas phase change contrast agent. After the contrast agent enters the body, under the ultrasonic double triggering of the physiological temperature and an ultrasonic imaging instrument, the double-liquid gas synchronously phase changes into a gaseous state, drives the contrast agent to rapidly expand from a nano-sized particle into a micron-sized microbubble, realizes ultrasonic enhanced imaging, and has a significant clinical application value.

This invention provides a multi-stage, multi-angle, rapid diffusion oxygen dissolving three-dimensional non-clogging microbubble aerator. An air inlet pipe and an air pipe are sequentially connected along the air inlet direction. A rapid microbubble cutting and diffusion oxygen dissolving unit is fitted outside the air inlet pipe. An inner cylinder and an outer cylinder are sequentially fitted outside the air pipe from the inside to the outside. The inner cylinder has a first inner cylinder section, a second inner cylinder section, and a third inner cylinder section sequentially along the air inlet direction. A medium-sized bubble cutting and diffusion oxygen dissolving unit is installed on the outer wall of the first inner cylinder section, a large bubble cutting and diffusion oxygen dissolving unit is installed on the outer wall of the second inner cylinder section, and an air guiding unit is installed on the outer wall of the third inner cylinder section. An air diffuser unit is installed at the air outlet of the air pipe. This multi-stage, multi-angle, rapid diffusion oxygen dissolving three-dimensional non-clogging microbubble aerator effectively cuts air into microbubbles, effectively solving the problems of clogging and short lifespan of traditional aerators after long-term use, and is suitable for aerobic aeration treatment.

The invention discloses a lubricant for drilling fluid and a preparation method of the lubricant, and belongs to the field of oil and gas drilling chemical additives. In the water-based drilling fluid, microbubbles I with the diameter of 0.1-1 mu m and microbubbles II with the diameter of 1-10 mu m are prepared in situ, and a low-frequency sound field of 20-50 kHz and a high-frequency sound field of 200-500 kHz are adopted for alternate or superposed driving; the microbubbles I are rapidly broken to release the lubricant to achieve instantaneous efficient lubrication of the initial drilling section, and the microbubbles II are slowly broken to maintain the lubricating film to achieve lasting lubrication of the rear section. The preparation method comprises the following steps: mixing the base oil, the surfactant, the gas precursor and the foam adjusting aid in proportion, performing synchronous gas injection oscillation in a multi-frequency sound field to form a graded microbubble suspension, and performing settling separation and stabilizing treatment to obtain the product. The lubricant can obviously reduce the friction between a drilling tool and a well wall and prolong the service life of the drilling tool, is compatible with an existing slurry system, is free of waste water and waste gas emission in production, does not detect heavy metals after being used, is easy to degrade in surfactant and pollution-free to underground water, meets the requirement of green drilling, and has excellent engineering popularization value.

To provide a bubble generator that can form and discharge microbubbles by arranging a plurality of magnetization modules, increasing the residence time of moving water to improve magnetization conversion efficiency, and rotating the moving water and causing it to collide multiple times. [Solution] A bubble generator comprising: a housing (10) through which water moves and which has a magnetized space formed inside; magnetization modules (20) arranged at intervals from each other in the magnetized space and having permanent magnets (30) arranged inside them to magnetize the water as it moves along the magnetized space; a screw module (40) provided on the outer surface of the magnetization module to guide the path of the water as it moves along the magnetized space and move the water while rotating it; and a circular plate (50) arranged in the magnetized space, with its outer edge abutting the inner surface of the housing that forms the magnetized space, and having a movement hole in the center through which the water moves, which guides the magnetized water to move through the movement hole as it passes through the magnetization module.

The invention discloses a preparation method and application of hollow lithium manganate microspheres based on a sound-induced microbubble template, and belongs to the field of lithium ion batteries. The method comprises the following steps: dissolving a surfactant in deionized water to prepare a surfactant solution with the concentration of 1-2g / L; high-power ultrasonic waves are applied to the surfactant solution, micron-sized bubbles are generated in the surfactant solution, and microbubble template liquid is obtained; adding manganese salt and an oxidizing agent into the microbubble template liquid under the continuous action of ultrasound, so that the manganese salt is oxidized at a gas-liquid interface of the micron-sized bubbles to form a hollow manganese dioxide precursor; centrifugally collecting, washing and drying to obtain hollow manganese dioxide microspheres; the hollow manganese dioxide microspheres and a lithium source are uniformly mixed and then subjected to segmented heat treatment, and the hollow lithium manganate microspheres are obtained after natural cooling, so that the problems that the template removal step is tedious, impurities are possibly introduced, the temporary template stability is poor, and the size distribution is non-uniform are solved.

The invention provides a hydraulic / ultrasonic coupling cavitation reaction device. The hydraulic / ultrasonic coupling cavitation reaction device comprises a tubular reactor, an ultrasonic vibrator and a Venturi generator, the tubular reactor is mounted on the ultrasonic acting surface of the ultrasonic vibrator; the outlet end of the Venturi generator is connected with the inlet end of the tubular reactor, and the Venturi generator is arranged outside the ultrasonic acting surface of the ultrasonic vibrator. According to the invention, a hydrodynamic cavitation structure is coupled in ultrasonic vibration, so that ultrasonic cavitation and hydrodynamic cavitation occur at the same time and at the same position, that is, the ultrasonic cavitation and the hydrodynamic cavitation directly interact with each other, and meanwhile, external micron bubbles are introduced to enhance the generation of cavitation microbubbles, so that the number of the cavitation microbubbles is increased, and the bursting strength of the bubbles is enhanced at the same time; the whole process of cavitation microbubbles from generation to blasting is enhanced, the cavitation physical and chemical effects are enhanced, and the method is suitable for nano material preparation, organic synthesis, new pollutant degradation and the like.

The application discloses a micro blood flow imaging method based on adaptive density filtering and a related device, and relates to the technical field of ultrasonic imaging. The method comprises the following steps: extracting a static frame in original ultrasonic data, screening a high-quality static frame through correlation analysis to eliminate motion interference; performing SVD clutter filtering, and cutting off high spatiotemporal coherence singular values to separate tissue clutter and microbubble signals; performing adaptive density filtering and subtracting a preliminary filtering result to realize noise suppression and overlapping microbubble decoupling; and enhancing microbubble motion signals through time-lag autocorrelation processing, and finally completing power Doppler imaging and ultrasonic localization microscope reconstruction. The scheme effectively solves the problem that the prior art cannot simultaneously consider PDI noise suppression and ULM microbubble decoupling, significantly improves image signal-to-noise ratio and super-resolution, avoids problems such as signal distortion, artifacts and loss of low-speed blood flow, and provides more reliable imaging support for clinical diagnosis such as blood vessel lesion detection and tumor blood flow evaluation.

The invention discloses a micro blood flow imaging method based on adaptive density filtering and a related device, and relates to the technical field of ultrasonic imaging, the method comprises the following steps: extracting static frames in original ultrasonic data, and screening high-quality static frames through correlation analysis to eliminate motion interference; sVD clutter filtering is carried out, and the high space-time coherence singular value is cut off to separate tissue clutters and microbubble signals; noise suppression and overlapped microbubble decoupling are realized through adaptive density filtering and subtraction with a preliminary filtering result; and enhancing a microbubble motion signal through time-delay self-correlation processing, and finally completing power Doppler imaging and ultrasonic positioning microscope reconstruction. According to the scheme, the problem that PDI noise suppression and ULM microbubble decoupling cannot be considered at the same time in the prior art is effectively solved, the image signal-to-noise ratio and super-resolution are remarkably improved, the problems of signal distortion, artifacts, low-speed blood flow loss and the like are avoided, and more reliable imaging support is provided for clinical diagnosis such as vasculopathy detection and tumor blood flow evaluation.

A device for CO2 microbubble flooding comprises a microbubble generating device, a stirring and liquid storage device, an injection pump, a gas compressor, a gas-liquid mixer and a pressure stabilizing system, wherein the microbubble generating device adopts an integrally formed multi-layer cylindrical metal powder-sintered porous plate, and the diameters of microchannels on the porous plate are sequentially reduced from inside to outside. A solution containing additives in the storage device is stirred uniformly and then enters into a downhole gas injection base pipe through the gas-liquid mixer to be injected into a stratum, then a carbon dioxide gas compressed by the gas compressor is pumped into the downhole gas injection base pipe through the gas injection pump, and the gas generates microbubbles in situ when passing through the multi-layer porous device under the action of pressure difference.

The application discloses a kind of hierarchical response intelligent drug-loading units and its controlled-release system, including A type drug-loading microbubble and B type phase change droplet, A type drug-loading microbubble includes gas core and rigid shell, the first drug active substance is loaded in the rigid shell, and the A type drug-loading microbubble has first burst threshold;B type phase change droplet includes low-boiling liquid perfluorocarbon core and phospholipid shell, the second drug active substance is loaded in the phospholipid shell, and the B type phase change droplet has phase transition threshold and second burst threshold;Wherein, first burst threshold>Second burst threshold>Phase transition threshold.The application realizes the precision and intelligent controlled-release of drug, significantly improves curative effect and reduces toxic side effect, benefits from the core structure design of hierarchical response drug-loading unit and programmable ultrasonic excitation sequence, and the application completely changes the extensive release mode of traditional one-time blasting.

The application discloses a liquid droplet fusion microfluidic method based on a liquid droplet fusion microfluidic device regulated by focused surface acoustic waves, and the device comprises an interdigital transducer, two focusing arc electrodes arranged on the interdigital transducer, and a microfluid channel system bonded on the upper part of the interdigital transducer. The focusing arc electrodes are matched with the microfluid channel system, and the microfluid channel system is provided with a first collection outlet joint, a first dispersed phase inlet joint, a continuous phase inlet joint, a second dispersed phase inlet joint and a second collection outlet joint. The focusing surface acoustic waves generated by the interdigital transducer and the liquid droplet microfluid channel structure are used to flexibly realize the fusion control of liquid droplets with different sizes in the microfluid channel. The symmetrical structure is adopted to enhance the durability and repeatability of the microfluid device. The method is not only suitable for the fusion control between microdroplets, but also suitable for the fusion control between microbubbles and between microdroplets and microbubbles. The surface acoustic waves are non-contact and have good biological compatibility, and thus meet the needs of the liquid droplet fusion technology in the fields of biochemistry and medical treatment.

The invention belongs to the technical field of quartz crucibles, and particularly relates to a microbubble characterization method for a transparent layer of a quartz crucible. According to the method, a seventh sample is obtained through cutting sampling, precise linear cutting separation of a bubble layer and a transparent layer, coarse grinding thinning, accurate grinding, chemical mechanical polishing and multi-step cleaning; the seventh sample is subjected to haze testing, haze data of the transparent layer of the quartz crucible is obtained, the bubble number and grade classification of the transparent layer of the quartz crucible are obtained according to the haze data of the transparent layer of the quartz crucible and a corresponding model, and the corresponding model is a model corresponding to the haze of the transparent layer of the quartz crucible and the number of microbubbles. The method provided by the invention is high in data objectivity, simple in operation process, high in detection efficiency and low in equipment cost; meanwhile, the scattering capacity of bubbles to light can be directly quantified, the correlation with optical interference in actual use is tighter, and microscope counting only reflects the number and cannot directly correspond to the function influence.

This invention relates to a gas logging experimental system simulating a real downhole environment. Its features include a wellbore undulation device, a drilling fluid injection device, a drilling fluid preparation device, and a drilling fluid treatment device. The wellbore undulation device simulates the unevenness of the wellbore during real drilling. The drilling fluid preparation device injects drilling fluid. The drilling fluid injection device forms concentric spiral flows of drilling fluid in different shapes within the wellbore undulation device. The drilling fluid treatment device is used for degassing and gas logging analysis. The wellbore undulation device is equipped with a microbubble injection device. This invention simulates the unevenness of the wellbore during real drilling, overcoming the shortcomings of existing devices that use smooth cylinders to simulate the wellbore; it solves the problem of existing devices failing to achieve concentric spiral flow of drilling fluid; and it also addresses the issue that existing devices have not yet achieved the injection of hydrocarbon gas into the drilling fluid in the form of microbubbles.

The invention discloses a stage grinding-high-concentration microbubble gradient recovery method for inlay non-uniform gold ore, and relates to the technical field of mineral processing, the method comprises the following components: S1, ore pulp preparation, S2, medium-coarse fraction high-concentration flotation, S3, micro-fine fraction pretreatment, and S4, micro-fine fraction microbubble flotation. According to the method, through the stage grinding and high-concentration microbubble gradient recovery technology, the recovery problem of coarse-grain-grade gold and micro-grain-grade gold in the inlaying non-uniform gold ore is effectively solved, gold in different particle size ranges can be fully recovered through combination of medium-coarse-grain-grade high-concentration flotation and micro-grain-grade microbubble flotation, and especially for the micro-grain-grade gold, the recovery rate of the gold is greatly improved. By adopting the specially-made sulfhydrylated silicon dioxide nano collecting agent, the recovery efficiency of the micro-fine particle gold is remarkably improved, and the method not only improves the overall recovery rate of the gold, but also fully utilizes mineral resources and reduces resource waste.

1. Name of the designed product: Impeller device for frother. 2. Use of the designed product: Impeller device for frother for making microbubbles in liquid. For example, frothing milk during heating and making microbubbles. 3. Design points of the designed product: In shape. 4. Picture or photo that best shows the design points: Design 1 combined state perspective view. 5. Design 1 is designated as the basic design.

The invention relates to a heating device and cooking equipment, and the heating device comprises a heating assembly which comprises a heat transfer part and a first heating part, the heat transfer part is provided with a cavity, the cavity is filled with heat conduction liquid, and the first heating part is arranged in the cavity; the ultrasonic assembly is arranged on the outer wall of the heat transfer piece and comprises an ultrasonic generator and a piezoelectric transducer. The first heating piece is immersed in the heat conduction liquid filled in the cavity, heat generated by the first heating piece is firstly transferred to the heat conduction liquid, and the temperature of the outer surface of the whole heat transfer piece is uniform by utilizing the heat conductivity and the fluidity of the liquid; the ultrasonic assembly generates high-frequency vibration, the vibration can generate an acoustic streaming effect, micro fluid movement is triggered, heat diffusion of the heating assembly is promoted, and temperature distribution in the inner container is more uniform. The ultrasonic waves can also generate a cavitation effect, microbubbles are generated in liquid or grease of the food to explode, a static thermal boundary layer is destroyed, heat is more uniformly transmitted to each part of the surface of the food, and the cooking effect is improved.

The invention describes a device (10) for gas separation from a liquid stream which flows through the device (10) at a liquid stream flow velocity, comprising: - a gas separator (12) or microbubble separator for removing gas bubbles from the liquid stream, wherein the gas separator (12) or microbubble separator has a liquid stream inlet (24), a liquid stream outlet (26), and a gas outlet (28) at which gas separated from the liquid stream is discharged, and - a first ultrasonic sensor, in particular a first ultrasonic flow sensor (14) designed for detecting gas bubbles in the liquid stream and for determining a quantity or volume of gas in the liquid stream, and - a control or regulating device (16) for controlling or regulating the liquid flow velocity, which is configured to control or regulate the liquid flow velocity depending on the amount or volume of gas in the liquid flow. The invention further provides a liquid circuit with such a device, a heat pump and refrigeration system with such a liquid circuit, and an industrial liquid processing system.

This invention discloses a biogas microbubble immersion type complexed iron wet desulfurization tower device, belonging to the field of desulfurization towers. The device includes a fixed lower tower, with a movable upper tower vertically slidably connected inside. The upper part of the movable upper tower extends to the upper part of the fixed lower tower, and a vertically arranged lifting mechanism is fixedly connected to the outside of the fixed lower tower. The lifting mechanism is fixedly connected to the upper part of the movable upper tower. A manhole, a desulfurization liquid regeneration interface, a biogas inlet unit, and a sewage cleaning port are fixedly connected to the bottom of the fixed lower tower. A desulfurization liquid level sensor is also installed on the outside of the fixed lower tower. A spray unit is fixedly connected to the movable upper tower. A gap sealing component is provided at the connection between the upper part of the fixed lower tower and the movable upper tower. This allows for adjustment of the overall height of the device according to user needs, reducing the device's volume and facilitating transportation, storage, installation, and use.

This invention provides a CD147-targeting nano-ultrasound contrast agent, its preparation method, and its application. The contrast agent comprises: microbial-derived gas vesicles and CD147 nanoantibodies linked to the surface of the gas vesicles via a coupling agent. The hollow nanostructure of the gas vesicles in this invention endows the contrast agent with highly efficient acoustic reflection capabilities, significantly improving the ultrasound signal intensity. The CD147 nanoantibodies possess high affinity and high specificity, enabling precise recognition of the CD147 antigen on the surface of tumor cells. This invention uses biosynthesized gas vesicles instead of traditional chemically synthesized gas microbubbles, combined with a simple and efficient coupling process, significantly reducing preparation difficulty and equipment dependence. The contrast agent of this invention overcomes the shortcomings of existing technologies in imaging performance, targeting, preparation process, safety, and multifunctional diagnostic and therapeutic capabilities, providing a novel technical pathway for precision diagnosis and treatment of tumors.

The invention provides a molten salt reactor radioactive gas removal device which comprises a main loop module, a gas injection module, a tail gas analysis and treatment module and an observation module, one end of the main loop module is connected with the gas injection module, the other end of the main loop module is connected with the tail gas analysis and treatment module, and the observation module is connected with the tail gas analysis and treatment module. The main loop module comprises a bubbler and a separator, the bubbler is filled with liquid for dissolving gas, and the observation module is arranged at a visual window on the side of a body of the bubbler and the separator; when the radioactive gas is removed, cavitation microbubbles and carrier gas microbubbles which are used for dissolving the radioactive gas are separated out by the bubbler, the cavitation microbubbles and the carrier gas microbubbles form a gas core by the separator, and the gas core is treated by the tail gas analysis and treatment module. According to the invention, deep dissolution and gas removal can be realized, the system sealing performance is good, the gas can be ensured not to leak, and the safety of operators and the environment is ensured.

This invention discloses a polyvinyl alcohol (PVA) solution for polarizers and its preparation method, belonging to the field of optical thin film manufacturing technology. The method includes: washing, swelling, and centrifuging to remove surface water from PVA resin particles, then mixing them with additives and pure water and adding them to a dissolving vessel; initially introducing nitrogen gas to pressurize to a first pressure and heating to allow the PVA particles to fully swell and initially dissolve; then slowly depressurizing to atmospheric pressure, continuously introducing nitrogen gas during the process to remove volatile impurities and dissolved oxygen; after depressurization, sealing the system again, introducing nitrogen gas to pressurize to a second pressure and heating to the dissolution temperature, and maintaining the temperature to dissolve to obtain a uniform and transparent PVA solution. This invention, through repeated pressurization and depressurization physical purification, effectively removes residual volatile impurities inside the PVA particles and microbubbles in the solution, significantly improving the transmittance and uniformity of the solution, thereby improving the optical and mechanical properties of PVA optical films and increasing production yield.

To provide a dishwasher capable of further improving washing capacity.SOLUTION: The dish washer 1 is provided with a microbubble generator 10 for containing microbubbles in washing water for washing the TW1 of the object to be washed. A state in which the washing water contains the microbubbles is referred to as a microbubble-containing state, and a state in which the washing water contains the detergent is referred to as a detergent-containing state. The dish washer 1 is configured to execute a first washing process of washing the TW1 of the object to be washed using wash water in at least the microbubble containing state out of the microbubble containing state and the detergent containing state, and a second washing process of washing the TW1 of the object to be washed using wash water in at least the detergent containing state out of the microbubble containing state and the detergent containing state. A first upper limit temperature TU1 that is an upper limit temperature of the washing water in the first washing step is lower than a second upper limit temperature TU2 that is an upper limit temperature of the washing water in the second washing step.SELECTED DRAWING: Figure 2

This invention discloses a vacuum-assisted homogenization and temperature-controlled 3D printing method and apparatus for irregularly shaped viscoelastic propellants, belonging to the field of additive manufacturing technology for energetic materials. The vacuum-assisted homogenization and temperature-controlled 3D printing method for irregularly shaped viscoelastic propellants achieves online degassing and precise temperature control of the slurry in a closed vacuum environment through synergistic physical field control. The technical solution of this application has the following technical effects: it abandons the inert gas protection method that may introduce new gas sources, and adopts a synergistic physical degassing mechanism based on low vacuum negative pressure, supplemented by ultrasonic vibration and pulsed vacuum fluctuations. The stable negative pressure environment provides a continuous driving force for the escape of gas inside the slurry; ultrasonic vibration acts on the slurry, which can destroy the adhesion state of microbubbles and promote their aggregation; pulsed vacuum fluctuations cause the bubbles to be in a periodic expansion and contraction state, thereby accelerating their instability and rupture. The above three physical fields cooperate and work synergistically.

This invention discloses an activated water treatment device and method, comprising a water tank, a circulating pump, a jet mixer, and a far-infrared irradiation tube. Upon starting the circulating pump, the water to be treated in the tank is pressurized by the pump to form a high-speed water flow. This high-speed water flow flows from the inlet section to the mixing section. As the high-speed water flow passes through the venturi-structured mixing section, a negative pressure is created. Under this negative pressure, outside air is drawn into the mixing section through the air intake structure, air inlet, and air outlet, where it is fully sheared, collided, and mixed with the high-speed water flow, forming a gas-liquid mixture rich in microbubbles. This gas-liquid mixture is discharged from the outlet section to the far-infrared irradiation tube. The far-infrared emitting material layer emits far-infrared wavelengths in the range of 4-16 μm. This far-infrared wavelength can effectively penetrate the water and microbubbles in the gas-liquid mixture, acting on water molecules, breaking the hydrogen bonds between water molecules, and altering the arrangement of water molecules, thereby enhancing the activity of the water.

This invention relates to cellulose cholesteric liquid crystal microbubbles based on solvent extraction technology and their preparation method. The method includes: constructing microcapsules using microfluidic technology, with a core of cellulose aqueous solution, a water-insoluble, photocurable, and selectively permeable rigid polymer material as the shell. By combining confined space effects and solvent extraction, dehydration is induced within the capsules to generate microbubbles, while simultaneously causing cellulose molecules to self-assemble into cholesteric liquid crystals with a periodic structure. This ultimately yields cholesteric liquid crystal microbubbles with a transparent shell, a periodic structure intermediate layer, and a bubble core. Under white light irradiation, the microbubbles exhibit bright structural colors and can suspend in water, maintaining stable structural colors. Compared to existing technologies, this invention combines microfluidic technology, spatial confinement effects, and solvent extraction technology to prepare novel cholesteric liquid crystal materials, which have advantages such as stable color, suspension capability, and simple preparation operation.

This invention provides a microbubble generator and method, comprising a first section, a second section, and a third section. The first section is a Venturi tube structure with an ultrafiltration membrane at the air inlet for pre-shearing and pre-mixing of bubbles. The second section is a reverse Tesla valve principle flow channel, including at least two converging channels for further bubble shearing. The third section is a uniform mixing channel, connected to all flow paths of the second section and converging into a single channel for uniform dispersion of microbubbles, forming a microbubble fluid. This invention solves the problems of complex structure, uneven bubble size, and insufficient gas-liquid mixing in existing microbubble generators, offering advantages such as simple structure and the ability to produce uniformly sized and mixed gas-liquid particles.