149 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.

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 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.

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.

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.

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.

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.

Disclosed is a disc brake (2) comprising: a pair of friction linings (10); a disc (4) having two annular friction surfaces (5), respective locations where the linings (10) apply friction to the disc (4), each of the annular friction surfaces (5) being delimited by an inner circle (C1) and an outer circle (C2); and a brake particle capture system comprising: a vacuum source; and two suction grooves (46) fluidically connected to the vacuum source and disposed at a distance from the friction linings (10), each of the grooves (46) facing a respective annular friction surface (5), the groove extending from the inner circle (C1) to the outer circle (C2).

A semiconductor metrology tool for analyzing a sample is disclosed. The semiconductor metrology tool includes a particle generation system, a local electrode, a particle capture device, a position detector, and a processor. The particle generation system is configured to remove a particle from a sample. The local electrode is configured to produce an attractive electric field and to direct the removed particle towards an aperture of the local electrode. The particle capture device is configured to produce a repulsive electric field around a region between the sample and the local electrode and to repel the removed particle towards the aperture. The position detector is configured to determine two-dimensional position coordinates of the removed particle and a flight time of the removed particle. The processor is configured to identify the removed particle based on the flight time.

The present invention relates to a catalyst having a sphericity parameter SPHT3 value of 0.9820 or less as determined by particle shape measurement using a moving image analysis method. Wherein the sphericity parameter SPHT3 is a value obtained by the following formula (I). SPHT3 = 4 [pi] A / P2... (I). In formula (I), A is the area of a particle captured by a moving image analysis method, and P is the peripheral length of the particle.

The invention discloses an efficient light-driven particle capture actuator based on a GO / PDMS-AuNBPs composite film, and belongs to the technical field of micro-nano control and biomedical engineering. The actuator aims at solving the problems that an existing light-driven particle capturing technology is low in photothermal conversion efficiency, depends on high-power laser, and is poor in thermal field stability and single in function. The core structure comprises a photo-thermal composite film and an optical fiber F-P sensing structure. The photo-thermal composite film is composed of a graphene oxide (GO) film and a polydimethylsiloxane (PDMS) film doped with gold nano bipyramid (AuNBPs). The optical fiber interference structure is formed by welding a single mode fiber (SMF) and a hollow fiber (HCF), and the end face of the HCF is coated with a photo-thermal composite film to construct a Fabry-Perot interference (FPI) microcavity; and the sensing unit realizes real-time monitoring of the capture state by monitoring the change of the reflection spectrum of the FPI microcavity. During working, the FPI microcavity plays a role in expanding a beam of a light field so as to improve the light field utilization rate of the GO film. PDMS regulation and control form an axisymmetric temperature potential well, and Marangoni force caused by temperature gradient drives particle capture. The lowest excitation power of the actuator is 11.9 mW, particles of 5-400 microns can be captured, and the actuator has low power consumption, high stability and biological compatibility and is suitable for living cell control, micro-reactor construction and micro-fluidic chip integration.

A laser control device controls the phase of light output from a spatial light modulator that generates optical tweezers on the basis of the vibration frequency of particles captured by an optical tweezers array.

The invention relates to the technical field of particle manipulation, in particular to magnetic sensitive optical tweezers and a particle manipulation method. The optical tweezers comprise an excitation source module, a magnetic field excitation and particle capture module and a substrate; the excitation source module generates angular polarized light, the magnetic field is radially polarized, the electric field is tangentially polarized, and the cross section is axisymmetric; in the magnetic field excitation and particle capture module, a gold column serves as the center, an air ring is nested outside the gold column, a gold ring is nested outside the air ring, the gold column and the gold ring are made of metal materials, the air ring is of a hollow structure, and the module is integrated on a silicon dioxide substrate. Angular polarized light covers the outer surface of the gold column and the inner surface of the gold ring to excite loop current, a longitudinal magnetic field component (magnetic focusing) and a hollow tubular light beam (optical potential well) are generated, and micron-sized particle capture, magnetic screening and magnetic conductivity measurement are achieved. The optical tweezers break through the limitation of capturing distance, magnetic field dependence, structural complexity and wavelength adaptability of the existing optical tweezers, and an efficient and universal scheme is provided.

A membrane design utilizing a tiling. In some embodiments, the tiling design is employed in transport processes including filtration and particle capture, static mixing, catalyst support, and heat transfer. Membrane design includes selecting walls from each tile in the tiling to be removed.

Disclosed is a method for implementing a system (20) for capturing brake particles from a disc brake, the capture system (20) comprising particle suction means (22, 24, 26) and a control unit (30) configured to control whether the suction means (22, 24, 26) are in the active or inactive state, the method comprising a succession of cycles, each of the cycles comprising a first step of a first duration during which the suction means (22, 24, 26) are controlled by the control unit (30) in order to be in an active state and a second step of a second duration during which the suction means (22, 24, 26) are controlled by the control unit in order to be in an inactive state.

The present invention relates to a brake particle trap, an automobile braking system, and a vehicle. The brake particle trap comprises: a cavity with a built-in magnetic field, a first particle adsorption layer, a second particle adsorption layer, a first magnetic field generating device, and a second magnetic field generating device. The cavity is configured to provide a guide path for the movement of brake particles; the first and second magnetic field generating devices are disposed on either side of the cavity to provide magnetic fields for the cavity; the first and second particle adsorption layers are configured to adsorb brake particles in the cavity; the first particle adsorption layer is disposed between the first magnetic field generating device and the cavity; and the second particle adsorption layer is disposed between the second magnetic field generating device and the cavity. Compared with existing technologies, the present invention has the advantages of reduced environmental pollution, improved particle capture efficiency, reduced brake load, simple structure, and ease of installation.

The invention relates to dynamic adjustable optical tweezers based on a polarization-sensitive transverse bifocal superlens, and belongs to the field of optical tweezers technology and micro-nano optics. According to the super-lens, dynamic regulation and control of a focus are realized by using sensitive response of the silicon nano-column array to polarization through a composite propagation phase and a geometric phase. Under linear polarization or elliptically polarized light, the system can generate transversely symmetrical double focuses; under the circularly polarized light, a single-side focus is formed. By adjusting the polarization state of incident light, a double-particle capture mode, a single-particle capture mode and a particle transverse transport mode can be flexibly switched. According to the invention, the physical structure does not need to be changed, the dynamic control can be realized only by external optical regulation and control, the structure is compact, the integration degree is high, the control is flexible and the like, and a new technical approach is provided for an on-chip particle control system.