202 results about "Particle capture" patented technology

The invention relates to the technical field of cell testing, and discloses a fuel cell multi-impurity composite effect testing system and method. Comprising an impurity generation module, a particle capture module, a mixing and conveying module, a fuel cell test module, a data acquisition module and a data processing and analysis module, breaks through the limitation of pollutant interaction deficiency in a single factor test, and effectively solves the technical problem that the pollutant synergistic effect is difficult to simulate under a real working condition. And a dual correction mechanism is constructed based on the synergistic effect coefficient and the information entropy weight, and the impurity synergistic effect coefficient is introduced when the initial attenuation rate is determined, so that the simplified hypothesis of the traditional linear superposition model is broken through, and the nonlinear attenuation characteristics under the multi-impurity composite action are accurately captured. The initial attenuation rate is secondarily corrected by calculating the information entropy weight of each impurity, the contribution difference of the influence of different impurity concentration distributions on the overall performance is effectively quantified, and the accuracy and engineering applicability of fuel cell performance attenuation prediction are remarkably improved.

A method of capturing carbon dioxide, including providing a particle containing magnesium oxide, calcium oxide, or a combination thereof; and providing a mixture gas to contact the particle, wherein the mixture gas includes water vapor, carbon dioxide, and nitrogen oxide, and the particle captures the carbon dioxide to form a carbonated particle and a treated gas. The mixture gas has a relative humidity of 25% to 95%, a nitrogen oxide concentration of 20 ppm to 2000 ppm, and a carbon dioxide concentration of 0.05% to 15%.

A method of capturing carbon dioxide, including providing a particle containing magnesium oxide, calcium oxide, or a combination thereof; and providing a mixture gas to contact the particle, wherein the mixture gas includes water vapor, carbon dioxide, and nitrogen oxide, and the particle captures the carbon dioxide to form a carbonated particle and a treated gas. The mixture gas has a relative humidity of 25% to 95%, a nitrogen oxide concentration of 20 ppm to 2000 ppm, and a carbon dioxide concentration of 0.05% to 15%.

The invention relates to full-dielectric adjustable optical tweezers based on a composite phase superlens, and belongs to the technical field of optical tweezers. Two regulation modes of geometric phase and transmission phase are integrated into a dielectric metasurface periodic structure, and a circular lens surface is combined according to a specific mapping and arrangement mode. The super lens can excite two different output electric fields under the input of linearly polarized light due to the regulation and control of a composite phase, and the two electric fields can independently exist under the input of circularly polarized light with opposite chirality. Therefore, by adjusting the polarization type of the incident light source of the super lens, free switching of multiple optical capturing modes of particles in a field can be realized. Compared with the existing optical tweezers, the control mode can be flexibly adjusted on the premise that the structure of the device is not changed, and more diversified particle capturing requirements can be met. The high-flexibility and easy-to-integrate micro-nano structure can provide powerful guarantee for the performance of a compact composite optical capturing device.

The invention discloses an unpowered air purification device based on electrostatic adsorption and negative ion effects, and relates to the technical field of air purification, the unpowered air purification device comprises a ventilation pipeline, an electrostatic adsorption module, a particle capture net, a negative ion release module and the like, a wind scooper guides airflow to enter the electrostatic adsorption module, and a friction ball rubs with an electrode plate to enable the electrode plate to be electrified; particulate matters in the air are adsorbed, falling particulate matters are collected by a liquid collecting box, residual particulate matters are further intercepted by a particulate capturing net, the elastic design is convenient for shaking off and cleaning, and the negative ion release module accelerates the generation of negative ions and purifies the air by utilizing the solar thermal conversion and piezoelectric effect. Efficient air purification is achieved through a multi-stage purification structure, the functions of humidity adjustment, intelligent reminding and the like are achieved, the structure is simple, energy conservation and environment protection are achieved, the device can adapt to various scenes, and an innovative scheme is provided for solving the air pollution problem.

The present invention discloses a nanoparticle transport device, comprising a silica substrate, a droplet-shaped gold nanoarray, polarized light waves, and nanoparticles; the silica substrate serves as a substrate; the droplet-shaped gold nanoarray is disposed on the silica substrate and serves as a driving unit, interacting with the polarized light field to form an excited local electric field to capture and directionally transport nanoparticles; the polarized light wave is used to provide a light source, interacting with the droplet-shaped gold nanoarray to generate an evanescent field; the nanoparticles serve as the objects to be captured and transported; the droplet-shaped gold nanoarray includes a periodically arranged droplet-shaped plasma gold nanostructure, which is composed of a droplet-shaped tail and a circular body, and the transport direction of the nanoparticles forms a certain angle with the droplet-shaped tail. The present invention can achieve more stable capture with lower light power, and also enables the device to achieve highly operational transport of target particles.

The invention discloses a method for generating a staggered superposition double-layer Airy light beam array capable of realizing double focusing, and belongs to the technical field of structured light regulation and control and special light beam generation. Aiming at the problems that the focusing characteristics of light beam arrays in transmission in different superposition modes are difficult to fully reveal in the prior art and the generation of an optical bottle depends on complex phase modulation or multiple optical elements, the method comprises the following steps: constructing a first layer of Airy light beam array and setting regulation and control parameters, constructing a second layer of Airy light beam array with staggered azimuth angles and setting regulation and control parameters, and constructing a second layer of Airy light beam array with staggered azimuth angles; a longitudinal double-focusing structure is realized through staggered superposition of double-layer Airy light beam arrays, and a vortex phase is introduced into double-focusing array light beams to form an optical bottle structure. According to the invention, the structure is simple, the longitudinal double-focusing and optical bottle structure can be realized only through the initial light field structure design, the focusing intensity and the regulation freedom degree are high, and the application of the light beam in the related fields of microscopic imaging, particle capture and the like is expanded.

The invention relates to the field of nano science and nano technology, in particular to a low-power particle capture and local thermal detection method and device based on tip-enhanced Raman optical tweezers, under laser irradiation, directional optical force is generated through an enhanced electric field between a nano tip and metal particles, and capture of the metal particles is achieved; raman scattering on the surface of the needle tip can be excited through focused laser, and the local temperature of the needle tip can be obtained by analyzing the change of a Raman characteristic peak. According to the method, directional optical force is generated through an enhanced electric field between the needle tip and the metal particles to capture the metal particles, the problem that the metal particles cannot be captured by single-beam 532 nm laser is solved, the power density of captured particles is reduced, and the adverse effect of the heat effect on capture is reduced. The method also can amplify the Raman signal of the needle tip to realize Raman detection of a local position, realizes temperature monitoring at the capture position, and lays a foundation for exploring the influence of the thermal effect on the capture process.

The invention relates to a converter valve water-cooling voltage-sharing electrode charged particle distribution simulation method and system. The method comprises the following steps: constructing a three-dimensional geometric model of multiple types of voltage-sharing electrodes; constructing a charged particle multi-physics field coupling model based on the three-dimensional geometric model, wherein the coupling model comprises a flow field control equation, an electric field control equation and a particle dynamics model; simulation boundary conditions and initial conditions are set, the boundary conditions comprise flow field boundary conditions and electric field boundary conditions, and the initial conditions comprise particle release initial conditions; on the basis of the coupling model, the simulation boundary condition and the initial condition, particle tracking and distribution characteristic resolving are executed, a simulation result is obtained, and the simulation result comprises a particle motion trail, a particle capture rate and a capture area. Compared with the prior art, the method has the advantages of breaking through macroscopic monitoring limitation, realizing microcosmic dynamic quantitative analysis, analyzing a multi-field force competition mechanism, revealing a local scaling source, verifying the advantages of a multi-electrode structure, supporting optimal design and the like.

The invention relates to the technical field of magnetic separation, in particular to a roasting activation magnetic separation combined iron removal system which comprises a pretreatment module, a magnetic characteristic dynamic detection module, a magnetic field parameter self-adaptive matching module, a dynamic magnetic compensation module, a separation path optimization module and a cross-module cooperative control module. The sorting process is rehearsed through a virtual twinborn model, parameters are triggered to be reset synchronously, and particle agglomeration interference is restrained in combination with dynamic partition of a sorting cavity and a flexible electrode array. The modules achieve magnetic field dynamic adaptation, magnetic attenuation compensation and sorting path optimization through closed-loop cooperation, the problem that a static magnetic field is mismatched with non-uniform magnetic particles is effectively solved, and the medium magnetic particle capture efficiency, the iron element recovery rate and the concentrate grade are remarkably improved.

The invention relates to an optical assembly (4) for a semiconductor lithography system, in particular for a projection exposure system, comprising: at least one housing (32, 32') with an interior (33, 33'), and at least one optical component (19, 20, 21) having a surface (19a, 20a, 21a) facing the interior (33, 33'). The optical assembly (3) has at least one porous particle trapping structure (29, 29') arranged on an inner surface (34a, 34a') of a wall (34, 34') of the housing (32, 32') or incorporated in the wall of the housing for trapping contaminating particles (24a, 24b) present in the interior (33, 33'). The invention also relates to a semiconductor lithography system, in particular a projection exposure system, comprising at least one such optical assembly (4).

The utility model provides a kind of optical fiber optical tweezers fluorescence lifetime detection equipment, by the light beam emitted by light source is divided into two ways, using the first optical fiber coupler to the two-way light signal received is coupled, and the light signal after coupling is transmitted to the optical fiber circulator connected, transmission to displacement control assembly by optical fiber circulator. Displacement control assembly utilizes one-way light signal to carry out target micro-particle capture, utilizes another light beam corresponding light signal to excite target micro-particle to generate excitation fluorescence signal, utilizes detection assembly to carry out photon number detection to excitation fluorescence signal, determines the fluorescence lifetime of target micro-particle. The utility model equipment can be realized in flexible control micro-particle, and the fluorescence lifetime of micro-particle is detected, and the utility model is more simple and efficient, applicable to precision large instrument to carry out ultrafast signal detection.

The utility model relates to the field of semiconductor film coating, in particular to a cold well type particle trap applied to a film coating process, which comprises a cavity, the top of the cavity is connected with an upper cover through a screw, the top of the upper cover is provided with a cooling mechanism, the cooling mechanism comprises a water-cooling buried pipe, the water-cooling buried pipe is embedded in the upper cover, and the water-cooling buried pipe is connected with the upper cover through a screw. One end of the water-cooling buried pipe communicates with a water inlet pipe. The electric heating pipe is arranged and used for heating process gas entering the cavity, particles in the gas are conveniently captured, the water-cooling buried pipe, the water inlet pipe, the quick-insertion type cooling pipe connector and the water outlet pipe are arranged and can communicate with external water supply equipment, cooling water is conveyed into the water-cooling buried pipe, and the bottom of the upper cover is cooled; process gas flows through the interior of the cavity through the gas inlet pipe, and trapped particles are quickly settled and condensed on the surfaces of the upper flow guide fins through high-temperature reaction and temperature difference brought by the cooling mechanism of the upper cover part.

A correction and capture method for a biological particle capture device includes: providing an image observation unit facing a side of a carrier platform on an observation platform and orientating a view region of the image observation unit towards a carrier region of the carrier platform for taking images; performing a fixed point displacement on the observation platform by the image observation unit based on several observation basic coordinates on an observation platform coordinate system and defining a correction point in an image of the view region when the image observation unit is positioned at one observation basic coordinate and take the image; controlling a capture portion of the particle capture tool to enter the image of the view region; adjusting the capture portion to align with the correction point and recording a capture correction coordinate by the terminal device.

Waste sorting device for sorting plastic waste particles, e.g. plastic flakes, in a particle stream based on a characteristic of the waste particles, comprising: - a sensor for determining a characteristic of waste particles in the particle stream; - a particle ejector downstream from the sensor relative to the particle stream for ejecting waste particles from the particle stream based on the determined characteristic; and - a vibratory feeder upstream from the sensor configured to provide a vibratory energy to the particle stream to feed the particle stream to the sensor via a particle guide, wherein the particle guide is provided between the vibratory feeder and the particle ejector, characterized in, that the waste sorting device further comprises a particle catcher arranged for catching particles that bounce from the particle guide and pass through a catching region, wherein the catching region is separated from the particle guide by a catching distance in a direction perpendicular to the particle stream, wherein the particle catcher is provided upstream from the sensor.

The invention provides an electrochemical biosensor used for alpha-synuclein detection. The sensor comprises a magnetic particle capture probe coated by a monoclonal antibody, a SiO2 nanoparticle signal probe for detecting antibody modification and a nano porous membrane loaded glassy carbon electrode modified by graphene. During detection, alpha-synuclein is specifically combined with the monoclonal antibody-coated magnetic particle capture probe and the detection antibody-modified cadmium-doped SiO2 nanoparticle signal probe to form a compound with a sandwich structure, the compound is directly precipitated in an external magnetic field, uncombined substances are removed through cleaning, and the detection sensitivity is high. And then re-dispersing the precipitate (compound) in the electrolyte, and immersing the glassy carbon electrode loaded by the graphene-modified nano porous membrane. After electrification, the cadmium ions in the compound are subjected to redox reaction to generate a current signal, and the current intensity of the current signal is in direct proportion to the content of alpha-synuclein. The sensor has the advantages of simplicity in operation, rapidness in detection, high sensitivity, high specificity and the like.

The invention relates to a small hybrid coagulated particle counter and a working method thereof. The condensed particle counter comprises a particulate matter adjusting unit, a hot steam saturation unit, a particulate matter and steam mixing unit, a particulate matter growth unit, an optical detection unit and a signal processing and control unit. To-be-detected ultrafine particles pass through the particle adjusting unit for adjusting the flow rate and reducing the temperature, are fully mixed with alcohol steam flowing into the hot steam saturation unit in the particle and steam mixing unit, and then absorb moisture in the particle growth unit to increase to an optically detectable size; and the measured diameter of the particulate matter is converted into an optical pulse signal by the optical detection unit, so that the number concentration of the to-be-measured ultrafine particulate matter is obtained. The device has the advantages of fast and sufficient mixing speed of particulate matters and hot steam, small particulate matter loss and the like, and has good performance in the aspects of dynamic detection, high-flow-speed operation and extremely-small-particle-size particulate matter capture while reducing the equipment volume and realizing portability.

This invention provides a wind erosion monitoring system and method based on distributed optical fiber, belonging to the field of optical-based wind and sand monitoring technology. It includes: constructing a wind erosion monitoring system comprising a linearly tunable laser, an optical isolator, a first coupler, an upper branch, a lower branch, a sand particle capture sensor, a photoelectric detection and acquisition module, and a host computer; utilizing the Rayleigh scattering signal of the linearly swept laser in the sensing optical fiber and the interference with a reference light, the vibration information distributed along the optical fiber is obtained by demodulating the beat frequency signal; combining the constructed sand particle impact and optical fiber coupling model, the dynamic strain generated by sand particle impact is converted into phase changes, realizing the acquisition of sand particle impact location, sand particle size, and sand particle quantity. This invention enables continuous distributed monitoring of wind and sand flows with high spatial resolution, and has advantages such as resistance to electromagnetic interference, strong environmental adaptability, and multi-parameter sensing, and can operate stably for a long time in harsh desert environments.

The invention relates to the technical field of hermetia illucens, and discloses hermetia illucens breeding filtering equipment which comprises a spraying shell, an air inlet pump is arranged on one side wall of the spraying shell, the air outlet end of the air inlet pump communicates with the interior of the spraying shell through an air inlet pipe, a first transition pipe is vertically arranged at the top of the spraying shell, and a second transition pipe is arranged at the bottom of the spraying shell. The top end of the first transition pipe is provided with a horizontally-arranged second transition pipe through a connecting bent pipe, and the bottom of the second transition pipe communicates with a plurality of purification cylinders through connecting pipes. And odor and harmful gases generated in the breeding process of the hermetia illucens are effectively purified step by step. In the spraying shell, gas is subjected to preliminary filtration, spray atomization and multi-layer filtration, and harmful components such as ammonia gas, hydrogen sulfide and sulfur dioxide and suspended particles in the gas are removed through efficient physical adsorption, chemical reaction and particle capture.

The utility model provides an air purification and humidification filter element assembly, an air humidification purifier and an air conditioner, relates to the technical field of air purifiers, and solves the problem that a uniform water film cannot be formed by a water guide piece in the prior art. A mounting frame of the air humidification filter element assembly is provided with a filter air duct, and an air inlet and an air outlet which are communicated through the filter air duct; the solid wire is mounted on the mounting frame and located in the filtering air duct, and at least part of airflow entering the filtering air duct from the air inlet can be guided by the filtering air duct to bypass the solid wire and flow to the air outlet after making contact with the outer surface of the solid wire. When the air humidification filter element assembly is used, water can enter the surfaces of the solid wires from the water holes in the bottom of the water tank, and the water in the through holes can uniformly flow into the outer surfaces of the solid wires to form uniform water films as long as enough water is guaranteed. And the water film on the outer surface of the solid wire can automatically take away the captured impurities such as particles, so that a self-cleaning effect is achieved, the use period of the solid wire filter element can be prolonged, and relatively good filtering efficiency can be kept for a long time.

The present application relates to a kind of vehicle body paint exhaust treatment tower spray circulating water tank, belong to industrial waste gas treatment equipment technical field.The device includes tower body, spray core shaft, drive ring seat, first suspension ring and second suspension ring, and the inside of tower body is equipped with processing cavity, and its upper and lower ends are equipped with shaft support, bottom is equipped with liquid collecting tank, and side wall is equipped with air inlet;Spray core shaft includes guide cone, guide cap, sub-guide ball and main shaft core, and circulating pump is arranged in main shaft core, and spray core shaft surface is provided with spray hole;Multiple drive ring seats are respectively corresponding to control multiple suspension rings, and its surface is equipped with magnetic yoke coil and exciter, and the permanent magnet block of drive suspension ring outer periphery realizes magnetic suspension rotation.The present application is by spray-magnetic suspension disturbance-flow channel trapping coupling mechanism, so that water and waste gas are fully contacted, agitated and dispersed in processing cavity, while extending waste gas residence time, improve particle capture efficiency and purification capacity, applicable to high concentration workshop waste gas treatment scene.

Embodiments relate to a biosensor. The biosensor includes an electrochemical system having a generator electrode, a collector electrode, and electrolyte. The generator electrode includes a particle capture region having an aspect ratio that is greater than 1. The particle capture region is a portion of the generator electrode configured to attract a particle supported within the electrolyte. The electrochemical system is operated so as to bias one of the generator electrode or the collector electrode below its formal potential while biasing the other electrode above its formal potential. The biosensor includes a processing module configured to measure electric current generated by the electrochemical system.

A correction and capture method for a biological particle capture device includes: disposing a first image correction unit and at least one second image correction unit on a carrier platform to take images, wherein a first magnification ratio of the first image correction unit is less than a second magnification ratio of the at least one second image correction unit, and an image-capture region of the first image correction unit overlaps with an image-capture region of the at least one second image correction unit; controlling a particle capture tool to move relative to the first image correction unit and the at least one second image correction unit and driving a capture portion of the particle capture tool to enter the image-capture region of the first image correction unit and the image-capture region of the at least one second image correction unit.

A correction and capture method for a biological particle capture device includes: providing an image observation unit facing a side of a carrier platform on an observation platform and orientating a view region of the image observation unit towards a carrier region of the carrier platform for taking images; performing a fixed point displacement on the observation platform by the image observation unit based on several observation basic coordinates on an observation platform coordinate system and defining a correction point in an image of the view region when the image observation unit is positioned at one observation basic coordinate and take the image; controlling a capture portion of a particle capture tool to enter the image of the view region; when the image observation unit discovers a particle in the carrier region of a carrier, a terminal device uses a specific conditional formula to obtain a relative capture coordinate for correspondingly moving the particle capture tool to a position of the particle.

The invention discloses a light floating resonant gyroscope which comprises a particle capture suspension module, a particle resonance driving module and a particle signal detection module, the particle capture suspension module is used for generating a particle capture light trap and performing non-contact light suspension on particles, the particle resonance driving module is used for driving the particles to work at resonant frequency and enhancing the resonance effect of suspended particles, and the particle signal detection module is used for detecting motion information of the particles in the light trap and extracting angular velocity signals. Based on a light floating resonance effect, a light force suspension mode is adopted, mechanical contact friction is avoided, particles work in a vacuum environment, external interference is effectively isolated, work is stable, and the service life of a system is long.

A closure device for closing a particle capture volume, in particular a bag or a container, including an access element with an access element opening for providing an access to the particle capture volume, a closure slide which can be selectively displaced relative to the access element into a release position or into a closure position. In the release position the closure slide releases the access element opening and in the closure position closes the access element opening, and a locking mechanism for locking the closure slide in the closure position with respect to the access element, where the locking mechanism 6 for unlocking requires a defined unlocking element which is separate from the locking mechanism.

To provide a cellulose pulp excellent in both particle trapping property and binder property, and to provide a method for producing the cellulose pulp, since beaten fibers are used in a variety of fields due to their excellent ability to capture functional particles, but there are also applications that require not only particle trapping property but also binder property, pulp-like acrylonitrile fibers are known as beaten fibers that combine these properties, but in recent years the environmental impact of plastic waste has become an issue and there has been a demand for a shift to bio-based materials, while conventional bio-based materials containing cellulose have not necessarily been satisfactory in terms of combining the above-mentioned properties.SOLUTION: The cellulose pulp according to the present invention is characterized in that the cellulose pulp fibril area is 15% or more and the fibril area(%) / 100×fine(%) / 100 is 0.05 or more.SELECTED DRAWING: None

The invention belongs to the technical field of magnetron sputtering equipment, and discloses a magnetron sputtering cabin escape particle capturing cover and method, and the magnetron sputtering cabin escape particle capturing cover comprises a sputtering cabin body and a capturing cover body arranged in an inner cavity of the sputtering cabin body; a target material is arranged at the top of an inner cavity of the sputtering cabin, a substrate bracket for placing a workpiece to be coated is arranged at the bottom of the inner cavity, a suspension bracket is arranged on the substrate bracket, a hollow grid collecting cover is clamped on the suspension bracket, and the collecting cover body is arranged at the upper end of the hollow grid collecting cover; the trapping cover body comprises a gradient outer layer, a gradient middle layer and a gradient inner layer which are sequentially arranged from outside to inside, through the gradient structure of the trapping cover body, physical field cooperation and PLC dynamic control, the efficient trapping and secondary escape prevention effects of escape particles are achieved, meanwhile, the rapid maintenance efficiency is improved, and the service life of the trapping cover body is prolonged. And the problems of efficiency and potential safety hazards of a traditional cleaning mode are solved, the working efficiency is improved, dust occupational injuries are reduced, the quality is improved, and the production cost is reduced.

A charged particle trapping device is disclosed. The device includes a charged particle trap (3) (Figure 2) which includes a set of electrodes (6) for generating an electric field for manipulating charged particles. The device comprises a voltage source (44) having an output, and a demultiplexer (26) having an input and a plurality of outputs, wherein the output of the voltage source is coupled to the input of the demultiplexer, and each of the plurality of outputs of the demultiplexer is coupled to each of the electrodes of the set of electrodes. The demultiplexer is configured to sequentially charge the electrodes in a first phase, and to be disconnected from the electrodes for a given time in a second phase to provide a relatively low-noise environment in which operation can be performed on charged particles.

The invention provides a maneuvering target correlation and tracking method under sparse observation based on a bimodal particle flow, and the method comprises the steps: constructing a core layer and exploration layer bimodal particle swarm with differentiated process noise, and employing a particle individual nearest neighbor normalization distance based on measurement noise as a soft gate correlation criterion. And the overall particle distribution is corrected by using a particle flow algorithm after exploration of particle capture observation. According to the method, the problem of deadlock caused by excessive confidence can be solved, accurate tracking of the sudden maneuvering target is always kept, the robustness under sparse observation can be remarkably improved, and breakpoint-free tracking can be realized. Moreover, the method does not need to maintain a plurality of filter models like an IMM algorithm, can achieve the coverage of a plurality of motion modes only through the adjustment of the particle noise distribution, is suitable for the real-time implementation of an engineering, and is more suitable for GPU parallelism.